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1000m 433MHz RF Transmitter Module
1000m 433MHz RF Transmitter Module
This tiny RF Transmitter module is great for building your own wireless remote control or wireless link. Remote control that allows to control different devices can be easily implemented with wide range of encoder/decoder chips (such as HOLTEK HT12E + HT12D or MC145026 + MC145027 available in our store) or PIC / AVR microcontrollers. RF Module can also be used for sending data at up to 9.6KB/s.

Specifications
     TTL Compatible Input
     Voltage Supply: 3 - 12V
     Power Consumption: 5 - 45mA
     Quiescent Current: 20uA
     Max Transfer Rate: 9.6KB/s
     Operating Frequency: 433MHz
     Transmitting Range: 1000m
     Dimensions: 19mm x 19mm x 8mm
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433MHz RF Receiver Module
433MHz RF Receiver Module
This tiny RF Receiver module is great for building your own wireless remote control or wireless link. Remote control that allows to control different devices can be easily implemented with wide range of encoder/decoder chips (such as HOLTEK HT12E + HT12D or MC145026 + MC145027 available in our store) or PIC / AVR microcontrollers. RF Module can also be used for sending data at up to 4.8KB/s.

Specifications
     TTL Compatible Output
     Voltage Supply: 5V
     Power Consumption: 5mA
     Receiving Sensitivity: -103 dB
     Max Transfer Rate: 4.8KB/s
     Operating Frequency: 433MHz
     Dimensions: 30mm x 14mm x 7mm
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Voltmeter Ammeter Kit
Voltmeter Ammeter Kit
Voltmeter Ammeter is a great kit to measure voltage and current at the same time. It measures 0-70V or 0-500V voltage with 100mV resolution and current from 0 to 10A. It's a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. Kit uses PIC16F876A microcontroller with built-in ADC (Analog to Digital Converter) to sample voltage with current and display it on 16 x 2 backlighted LCD display. It comes with all the parts required to build high quality kit, including double-sided PCB with beautiful red solder mask and plated through holes. With slight modification it is possible to measure higher voltage and current. To measure voltage that is higher than 70 Volts simply replace R3 6.8K resistor with included 1K resistor. This will allow to measure up to 500 Volts. To measure current that is higher than 10A simply replace 0.1 Ohm 5W power resistor with higher wattage resistor. For example 20W 0.1 Ohm resistor will allow to measure up to 20 Amperes. Kit can also measure AC voltage if rectifier bridge is added to voltage input as well as measure and be supplied by the same power source.

Specifications
     Voltage Input: 0 - 70V / 0 - 500V
     Current Input: 0 - 10A
     Voltage Supply: 6 - 30V
     Current Consumption: 30mA

Component List
   1x 16 x 2 LCD Display with Green Backlight
   1x PIC16F876A - Programmed microcontroller
   1x High Quality PCB with red solder mask and plated through holes
   1x 28-DIP IC Socket
   1x 4MHz Resonator
   1x 16 x 1 Gold Plated Male Header
   1x 16 x 1 Gold Plated Female Header
   1x 4 x 1 Gold Plated Header
   1x LM7805 5V Voltage Regulator
   1x 10K Trimmer Potentiometer
   1x 4 x 10K Network Resistor
   2x 100K 1% Metal Film Resistor
   2x 6.8K 1% Metal Film Resistor
   1x 1K 1% Metal Film Resistor
   1x 33 1% Metal Film Resistor
   1x 0.1 Ohm 5W Power Resistor
   1x 100uF Panasonic Capacitor
   1x 100nF Multilayer Ceramic Capacitor
   1x Manual with Schematic
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1A Micro USB LIPO Battery Charger
1A Micro USB LIPO Battery Charger
1A Micro USB LIPO battery charger designed to charge 3.7V LIPO / Li-Ion / Lithium Polymer batteries.

     Input Voltage: Micro USB / 4.5-5.5V
     Charging Voltage: 4.2V
     Charging Current: 1A
     Charging current adjustable via R PROG resistor: 1A - 1.2K (default), 900mA - 1.3K, 780mA - 1.5K, 580mA - 2K, 400mA - 3K, 250mA - 4K, 200mA - 6.2K
     Two LEDs indicate charging status
     Dimensions: 16 x 22 mm
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ESR Meter / Transistor Tester / LC Meter Kit
ESR Meter / Transistor Tester / LC Meter Kit
ESR Meter / Transistor Tester / LC Meter kit is an amazing auto-ranging multimeter that automatically identifies and analyzes components being tested. It measures ESR values, capacitance (100pF - 20,000uF), inductance (10uH - 20H), resistance (0.1 Ohm - 20 MOhm), tests many different types of transistors such as NPN, PNP, FETs, MOSFETs, Thyristors, SCRs, Triacs and many types of diodes. It also analyzes transistor's characteristics such as voltage and gain. It is an irreplaceable tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors. Unlike other ESR Meters that only measure ESR value this one measures capacitor's ESR value as well as its capacitance all at the same time.



Electrolytic capacitors are by far the electronic parts that suffer aging soonest. If you have any electronic equipment that over the years has degraded its performance, developed quirks, sometimes ending in complete failure, the chances are good that one or more electrolytic capacitors inside it have degraded, causing the problem. Electrolytic capacitors age in several ways: They can become electrically leaky, causing a DC current through them that can make them blow up. They can shift in capacitance value. But the most common way they degrade, by far, is by unduly increasing their equivalent series resistance, which is the undesired internal resistance that appears in series with the wanted capacitance at a given frequency.




Specifications
     ESR Measurements: 2.2uF - 20,000uF
     ESR Resolution: 0.01Ω
     Capacitance Measurements: 100pF - 20,000uF
     Inductance Measurements: 10uH - 20H
     Resistance Measurements: 0.1Ω - 20MΩ
     Tests and identifies PINs of all transistors: Bipolar (NPN, PNP), FETs, MOSFETs (N-Channel, P-Channel, enhancement-mode and depletion-mode MOSFETs), Thyristors, SCRs and Triacs.
     Tests and identifies PINs and voltage of diodes, dual diodes, varicap diodes (and their capacity), zener diodes (test voltage up to 5V) and LEDs.
     Power Requirements: 7-16V
     Current Consumption: 40mA

Component List
   1x ESR Meter / Transistor Tester Kit PCB
   1x 16 x 2 LCD Display with Green Backlight
   1x ATMEGA328 Programmed microcontroller
   1x 28-DIP IC Socket
   1x 16-PIN Gold Plated Male Header (LCD)
   1x 16-PIN Gold Plated Female Connector (PCB)
   1x 3-PIN Gold Plated Machined Female Socket
   1x 2-PIN Gold Plated Male Header
   1x 78L05 5V Voltage Regulator
   1x Tactile Switch
   1x 10K LCD Contrast Potentiometer
   1x 1000pF 2.5% WIMA Capacitor
   1x 100uF Panasonic Capacitor
   2x 100nF Mylar Capacitors
11 x 1% Metal Film Resistors
   1x ESR Meter manual with schematic and assembly instructions
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76MHz - 110MHz FM Transmitter with Booster
76MHz - 110MHz FM Transmitter with Booster
Fully assembled and tested three stage FM transmitter with an on board signal booster for increased transmitting range. It broadcasts audio on 76MHz - 110MHz FM frequency via included on board microphone or from MP3 player, Phone, iPod, Computer, Laptop, CD Player, TV, Satellite Receiver via on board 3.5mm connector. It transmit sound with excellent clarity throughout your home, office, yard, camp ground, etc. Transmitter uses one 2SC9014 and two 2SC9018 low noise RF transistors. Add 500mW FM / VHF Transmitter Amplifier / Booster for even longer range.

Specifications
Frequency: 76MHz - 110MHz
Audio Input: Microphone / 3.5mm Audio Jack
Voltage Supply: 3 - 12V DC Input
PCB Dimensions: 60mm x 40mm (W x H)
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60MHz Frequency Meter / Counter Kit - Blue Backlight LCD
60MHz Frequency Meter / Counter Kit - Blue Backlight LCD
60MHz Frequency Meter / Counter kit measures frequency from 10Hz to 60MHz with 10Hz resolution. It is extremely useful bench test equipment for testing and measuring frequency of oscillators, transmitters, radio receivers, function generators, crystals, etc. Counter provides exceptionally stable readings and has excellent input sensitivity thanks to onboard amplifier and TTL converter. It can be even used for measuring weak signals from crystal oscillators. With the addition of simple prescaller it is possible to measure frequency up to 1GHz or more. Counter's measuring range has now been extended form 50MHz up to 60MHz.

Click here for more information and schematic

Specifications
     Voltage Supply: 7V - 16V
     Power Consumption: 80mA with LCD backlight
     Frequency Measurement: 10Hz - 60MHz
     Measurement Resolution: 10Hz

Component List
   1x 16 x 2 LCD Display with Blue Backlight
   1x PIC16F628A Programmed Microcontroller
   1x PCB
   1x 18-DIP IC Socket
   1x 4.000MHz Crystal
   1x LM7805 5V Voltage Regulator
   1x 1 x 16 Gold Plated Female Header (for PCB)
   1x 1 x 16 Gold Plated Male Header (for LCD)
   2x 1 x 2 Gold Plated Male Header (for LCD)
   1x BF199
   1x 10uH Inductor
   1x 10K Trimmer
   1x 10K 1% Metal Film Resistor
   2x 470 1% Metal Film Resistor
   1x 33 1% Metal Film Resistor
   1x 100uF Panasonic Capacitor
   2x 100nF Multilayer Ceramic Capacitor
   2x 10pF Ceramic Capacitor
   1x Manual with Schematic

Related Products
     1Hz - 2MHz XR2206 Function Generator Kit
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1Hz - 2MHz XR2206 Function Generator Kit
1Hz - 2MHz XR2206 Function Generator Kit
Premium quality XR2206 Function Generator kit capable of producing high quality sine, square and triangle waveforms of high-stability and accuracy. The output waveforms can be both amplitude and frequency modulated. Coarse frequency adjustment is accomplished using 4-DIP switch for the following four frequency ranges; (1) 1Hz-100Hz, (2) 100Hz-20KHz, (3) 20KHz-1MHz, (4) 150KHz-2MHz. Frequency output can be fine tuned using P1 and P2 potentiometers. The kit includes output that can be connected to 60MHz Counter kit for displaying output frequency on LCD display. 1Hz - 2MHz XR2206 Function Generator kit includes premium quality components, including Audio Grade Gold Capacitors, Gold Plated RCA Connector, WIMA Capacitors, 1% Metal Film Resistors and premium quality double-sided PCB with red solder mask and plated through holes.

Sine Wave
     Amplitude: 0 - 3V at 9V DC input
     Distortion: Less than 1% (at 1kHz)
     Flatness: +0.05dB 1Hz - 100kHz

Square Wave
     Amplitude: 8V (no load) at 9V DC input
     Rise Time: Less than 50ns (at 1kHz)
     Fall Time: Less than 30ns (at 1kHz)
     Symmetry: Less than 5% (at 1kHz)

Triangle Wave
     Amplitude: 0 - 3V at 9V DC input
     Linearity: Less than 1% (up to 100kHz)

Specifications
     Voltage Supply: 9-18V DC Input
     Waveforms: Square, Sine & Triangle
     Impedance: 600Ω + 10%
     Frequency: 1Hz - 2MHz in 4 steps ranges with fine adjustment
     PCB Dimensions: 37 x 63 mm / 1.5" x 2.5"

Component List
   1x XR2206
   1x Premium Quality PCB with Red Solder Mask
   1x Yellow RCA Connector
   1x Gold Plated 4-DIP Switch
   1x Sine / Square Switch
   1x Sine / Triangle Switch
   2x 100K Potentiometer
   1x 10K Potentiometer
   1x 100uF / 50V Nichicon Gold Audio Grade Capacitor
   2x 10uF / 35V Nichicon Gold Audio Grade Capacitor
   1x 100nF WIMA Capacitor
   1x 1nF WIMA Capacitor
   1x 150pF Capacitor
   3x 6.8K 1% Metal Film Resistor
   1x 1K 1% Metal Film Resistor
   1x 200 1% Metal Film Resistor
   1x 2-PIN Gold Plated Male Header
   1x Manual with Schematic

Related Products
     60MHz Frequency Meter / Counter Kit
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500mW FM / VHF Transmitter Amplifier / Booster Kit
500mW FM / VHF Transmitter Amplifier / Booster Kit
High performance low noise 500mW RF amplifier / booster kit for boosting output power all low power FM transmitters such as BA1404, BH1417, BH1415, 433MHz transmitter modules, etc. The amplifier chip is an integrated circuit containing multiple transistor stages and all other parts conveniently within a single small package. Boosting your FM transmitter has never been easier and the output signal can also directly drive 2n4427 or 2n3866 transistors for 1W or 5W of RF output power.

Specifications
     Output Power: 500mW
     Input Frequency: 50MHz - 1300MHz
     Voltage Supply: 9-12V
     PCB Dimensions: 15mm x 25mm

Component List
   1x 500mW RF Amplifier Chip
   1x PCB
   1x 10uH Inductor
   3x 1nF Capacitor
   1x 120R Resistor
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Special Edition Accurate LC Meter Kit
Special Edition Accurate LC Meter Kit
Build your own Special Edition Accurate LC Meter (Inductance Meter / Capacitance Meter) and start making custom made precision coils and inductors. Accurate LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils and inductors. It can measure inductance starting from only 10nH - 1000nH, 1uH - 1000uH, 1mH up to 100mH and capacitance from 0.1pF up to 900nF. Special Edition LC Meter includes top notch high precision components that are only found in premium quality kits. It includes high quality double-sided printed circuit board (PCB) with red solder mask and pre-soldered tracks for easier soldering, detachable LCD display with green LED backlight, programmed PIC16F628A microcontroller chip, high precision capacitors and inductor, 1% Metal Film resistors, gold plated header pins, LCD header connectors and all the other components that are needed to build a premium quality kit. Thanks to the use of LCD connectors LCD display can be detached from the main PCB board at any time even after the kit has been assembled. All components are through-hole and are easy to solder. Special Edition Accurate LC Meter is designed for professionals that require unprecedented measurement accuracy and offers great value at low cost.

Specifications
     Measures following inductance: 10nH - 1000nH, 0.1uH - 1000uH, 0.1mH - 100mH
     Measures following capacitance: 0.1pF - 1000pF, 0.1nF - 900nF
     Voltage Supply: 6 - 16V
     Current Consumption: 10mA
     Dimensions: 80 mm x 36 mm x 23 mm (W x L x H)

Component List
   1x 16 x 2 LCD Display with Green Backlight
   1x Premium Quality Dual Layer LC Meter PCB
   1x PIC16F628A Programmed Microcontroller IC
   1x LM311 IC
   1x 18 DIP Machined IC Socket
   1x 8 DIP Machined IC Socket
   1x 78L05 5V Voltage Regulator
   1x 10K Potentiometer
   1x High Grade 82uH Inductor
   1x 4.000 MHz Crystal
   1x 5V Ceramic Reed Relay
   1x L/C Push-button Switch with Black Cap
   1x Tactile Reset Switch
   1x 100uF Panasonic Capacitor
   2x 10uF Panasonic Capacitors
   1x 100nF / 50V TDK Capacitor
   2x 1000pF 2.5% WIMA Capacitors
   2x 10pF Capacitors
   1x 16-PIN Gold Plated LCD Female Header
   1x 16-PIN Gold Plated LCD Male Header
   2x 2-PIN Gold Plated Header
   3x 100K 1% Metal Film Resistors
   1x 47K 1% Metal Film Resistor
   2x 6.8K 1% Metal Film Resistors
   1x 1K 1% Metal Film Resistor
   1x 100 1% Metal Film Resistor
   1x 33 1% Metal Film Resistor
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BA1404 HI-FI Stereo FM Transmitter - Special Edition Kit
BA1404 HI-FI Stereo FM Transmitter - Special Edition Kit
Be "On Air" with your own radio station! BA1404 HI-FI Stereo FM Transmitter - Special Edition Kit is an exciting transmitter that will broadcast high quality stereo signal in 88MHz - 108MHz FM band. It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground. Add 500mW FM / VHF Transmitter Amplifier / Booster for even longer range.



Special Edition BA1404 HI-FI Stereo FM Transmitter Kit includes premium components with audio grade gold capacitors, 1% Metal Film Resistors and quality PCB with Red Solder Mask and Plated-Through Holes. The kit is based on the popular BA1404 stereo broadcaster IC which contains all the complex circuitry for generating the stereo FM signal. 38 KHz crystal provides a rock solid stability of sub-carrier for stereo signal.

Specifications
     Voltage Supply: 1.5 - 3V DC Input (Single or Two AA/AAA batteries)
     Frequency: 88MHz - 108MHz
     Audio Input: Stereo
     PCB Dimensions: 49mm x 32mm (W x H)

Component List
   1x BA1404 Stereo FM Transmitter IC
   1x PCB with Red Solder Mask and Plated-Through Holes
   1x 38KHz Crystal Oscillator
   1x 5.5T Variable Precision RF Coil
   1x 10uH Inductor
   4x 10uF/50V Gold Audio Capacitors
   4x 1nF Ceramic Capacitors
   2x 1nF Mylar Capacitors
   1x 220pF Ceramic Capacitor
   5x 10pF Ceramic Capacitors
   2x 47K 1% Metal Film Resistors
   2x 27K 1% Metal Film Resistors
   1x 150K 1% Metal Film Resistor
   1x 5.6K 1% Metal Film Resistor
   1x 270 1% Metal Film Resistor
   1x Instructions
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USB IO Board Kit
USB IO Board Kit
USB IO Board is a tiny spectacular input / output development board (parallel port replacement) that can be used for controlling many different devices as well as data acquisition such as collecting data from sensors, buttons, voltage/current measurements, etc. It is based around single PIC18F2550 microcontroller chip that includes    10x 10-bit Analog to Digital Converters (ADC) for precision voltage/current measurements. Controlling USB IO Board is easy. When attached to Windows PC USB IO Board will show up as RS232 COM serial port. You can control 16 individual microcontroller I/O pins by sending simple serial commands or write your own custom C#/VB.NET application. USB IO Board is self-powered by USB port and can provide up to 500mA for your project needs. USB IO Board is breadboard compatible. Simply solder included 12-PIN & 8-PIN male headers on the bottom side of the PCB and the board can be plugged into a breadboard for quick prototyping. USB IO Board is compatible with Windows 10, 8, 7 (32/64-bit), XP, VISTA, Win2K, Mac OSX and Linux.



These are examples of what can be built using USB IO Board Pro:
     USB Relay Controller (turn ON/OFF lights or appliances in the house)
     Control LEDs, toys, electronic gadgets, wireless control, etc.
     USB LCD Controller
     USB Volt / Ampere / Wattage / Pressure Meter
     USB CNC Controller
     USB Data Logger
     USB Temperature Meter / Logger
     USB Thermostat
     USB Humidity Meter / Logger
     USB Digital RF Power Meter
     USB Stepper Motor Controller
     USB RC Servo Controller
     and much more

Specifications
     16 I/O PINs
     10 x 10-bit ADCs for precision measurements
     USB 2.0 and USB 1.1 plug-and-play compatibility
     USB Powered
     Runs under Windows 10, 8, 7 (32/64-bit), XP, VISTA, Win2K, Mac OSX and Linux
     Low 5mA current consumption
     PCB Dimensions: 18mm x 59mm / 0.7" x 2.3"

Click here for schematic, pictures and sample software

Component List
   1x PIC18F2550 Programmed Microcontroller (MCU)
   1x USB IO Board PCB
   1x 28-DIP IC Socket
   1x USB Type B Connector
   1x Gold Plated 12-PIN LCD Male Header
   1x Gold Plated 8-PIN LCD Male Header
   1x 20MHz Crystal Resonator
   2x 10K Resistor
   1x 100uF Panasonic Capacitor
   2x 100nF Multilayer Ceramic Capacitor
   1x Instructions with Schematic
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USB Thermometer Kit with Data Logger
USB Thermometer Kit with Data Logger
USB Thermometer allows to measure temperature in two different locations. Two Microchip MCP9700 temperature sensors in standard TO-92 package are used to sample temperature and allow to measure temperature from -40 to +125 Celsius degrees. Simply connect to a PC computer via standard USB cable and temperature readings will be displayed using included USB Thermometer software. USB Thermometer takes power directly from USB port and does not need external power supply. Temperature readings can be displayed in both Fahrenheit and Celsius degrees.

USB Thermometer software comes with Data Logger feature. Date, time and temperature readings are saved to a text file and can be used to create various graphs via Microsoft Excel or any other statistical software. The software will log temperature every x amount of time which can be set from a second up to a day.





Specifications
     Temperature Range: -40 to +125 degrees Celsius
     Voltage Supply: 5V (USB Powered)
     PCB Dimensions: 18mm x 59mm / 0.7" x 2.3"

Component List
   1x PIC18F2550 Programmed Microcontroller (MCU)
   2x MCP9700 temperature sensors (TO-92 package)
   1x USB Thermometer PCB
   1x 28-DIP IC Socket
   1x USB Type B Connector
   1x Gold Plated 12-PIN LCD Male Header
   1x Gold Plated 8-PIN LCD Male Header
   1x 20MHz Crystal Resonator
   2x 10K Resistor
   1x 100uF Panasonic Capacitor
   2x 100nF Multilayer Ceramic Capacitor
   1x Instructions with Schematic
   1x USB Thermometer software with Data Logger (Win 10, 8, 7, XP, VISTA)
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USB Voltmeter Kit
USB Voltmeter Kit
USB Voltmeter is a PC based dual channel voltmeter built around PIC18F2550 microcontroller that measures voltage from 0.00V up to 500.00V with 10mV resolution. USB Voltmeter sends measured data to PC via standard USB connection displaying data on a computer monitor. USB Voltmeter is self-powered drawing very little current from USB port. Voltage readings are displayed via included USB Voltmeter software.

Specifications
     Voltage Input Range: 0 - 500V
     Voltage Input Channels: 2
     Voltage Resolution: 10mV
     Power Supply: 5V (USB Powered)
     PCB Dimensions: 18mm x 59mm / 0.7" x 2.3"

Component List
   1x PIC18F2550 Programmed Microcontroller (MCU)
   1x USB Voltmeter PCB
   1x 28-DIP IC Socket
   1x USB Type B Connector
   1x Gold Plated 12-PIN Male Header
   1x Gold Plated 8-PIN Male Header
   1x 20MHz Crystal Resonator
   2x 100K 1% Metal Film Resistor
   2x 10K Micro Resistor
   2x 6.8K 1% Metal Film Resistor
   2x 1K 1% Metal Film Resistor
   1x 100uF Panasonic Capacitor
   2x 100nF Multilayer Ceramic Capacitor
   1x Instructions with Schematic
   1x USB Voltmeter software (Win 10, 8, 7, XP, VISTA)
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1-5V to 5V DC to DC Step Up Power Supply Board
1-5V to 5V DC to DC Step Up Power Supply Board
This amazing small DC to DC Step Up power supply board allows to power 5V USB devices from just 1V to 5V power source inputs. Single AA battery will provide 5V with 200-300mA current, while two AA batteries will provide 5V with as much as 500-600mA of current! Use all the power out of old batteries that would otherwise go to waste. Use solar panels, 3.7V LIPO batteries or AA batteries to build power packs to charge all your USB electronic devices through onboard USB connector. Board comes fully assembled.

     Voltage Input: 1-5V DC
     Voltage Output: 5V through USB connector
     Current: 200-300mA from one AA battery / 500-600mA from two AA batteries
     Efficiency: 96%
     Dimensions: 34 x 15 x 7mm
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USB IO Board Stick Kit
USB IO Board Stick Kit
USB IO Board Stick is a tiny spectacular input / output development board / parallel port replacement that can be used to control many different devices via USB port. It may also be used for data acquisition such as collecting data from sensors, buttons, voltage/current measurements, etc. It plugs right into computer's USB port so no USB cable is required. USB IO Board Stick is based around single PIC18F2550 microcontroller chip that includes    10x 10-bit Analog to Digital Converters (ADC) for precision voltage/current measurements. Controlling USB IO Board Stick is easy. When attached to Windows PC the board will show as RS232 COM serial port. You can control 16 individual microcontroller I/O pins by sending simple serial commands via included software or use included source code to write your own custom C#/VB.NET application. USB IO Board Stick is self-powered by USB port and can provide up to 500mA for your project needs and it is breadboard compatible. Simply solder included 12-PIN & 8-PIN male headers on the bottom side of the PCB and the board can be plugged into a breadboard for quick prototyping. USB IO Board Stick is compatible with Windows 10, 8, 7 (32/64-bit), XP, VISTA, Win2K, Mac OSX and Linux.

These are examples of what can be built using USB IO Board Stick:
     USB Relay Controller (turn ON/OFF lights or appliances in the house)
     Control LEDs, toys, electronic gadgets, wireless control, etc.
     USB LCD Controller
     USB Volt / Ampere / Wattage / Pressure Meter
     USB CNC Controller
     USB Data Logger
     USB Temperature Meter / Logger
     USB Thermostat
     USB Humidity Meter / Logger
     USB Digital RF Power Meter
     USB Stepper Motor Controller
     USB RC Servo Controller
     and much more

Specifications
     16 I/O PINs
     10 x 10-bit ADC ports for precision voltage measurements
     USB 3.0, 2.0 and USB 1.1 plug-and-play compatibility
     USB Powered
     Compatible with Windows 10, 8, 7 (32/64-bit), XP, VISTA, Win2K, Mac OSX and Linux
     Low 5mA current consumption
     PCB Dimensions: 18mm x 60mm / 0.7" x 2.25"

Click here for schematic, pictures and sample software

Component List
   1x PIC18F2550 Programmed Microcontroller
   1x USB IO Board Stick PCB
   1x 28-DIP IC Socket
   1x USB Male Type A Connector
   1x Gold Plated 12-PIN LCD Male Header
   1x Gold Plated 8-PIN LCD Male Header
   1x 20MHz Crystal Resonator
   2x 10K Resistor
   1x 47uF Panasonic Capacitor
   2x 100nF Multilayer Ceramic Capacitor
   1x Instructions with Schematic
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Special Edition Accurate LC Meter Kit with Blue Backlight LCD
Special Edition Accurate LC Meter Kit with Blue Backlight LCD
Build your own Special Edition Accurate LC Meter (Inductance Meter / Capacitance Meter) and start making custom made precision coils and inductors. Accurate LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils and inductors. It can measure inductance starting from only 10nH - 1000nH, 1uH - 1000uH, 1mH up to 100mH and capacitance from 0.1pF up to 900nF. Special Edition LC Meter includes top notch high precision components that are only found in premium quality kits. It includes high quality double-sided printed circuit board (PCB) with red solder mask and pre-soldered tracks for easier soldering, detachable LCD display with blue LED backlight, programmed PIC16F628A microcontroller chip, high precision capacitors and inductor, 1% Metal Film resistors, gold plated header pins, LCD header connectors and all the other components that are needed to build a premium quality kit. Thanks to the use of LCD connectors LCD display can be detached from the main PCB board at any time even after the kit has been assembled. All components are through-hole and are easy to solder. Special Edition Accurate LC Meter is designed for professionals that require unprecedented measurement accuracy and offers great value at low cost.

View LC Meter Schematic and Detailed Description

Specifications
     Measures following inductance: 10nH - 1000nH, 0.1uH - 1000uH, 0.1mH - 100mH
     Measures following capacitance: 0.1pF - 1000pF, 0.1nF - 900nF
     Voltage Supply: 6 - 16V
     Current Consumption: 10mA
     Dimensions: 80 mm x 36 mm x 23 mm (W x L x H)

Component List
   1x 16 x 2 LCD Display with Blue Backlight
   1x Premium Quality Dual Layer LC Meter PCB
   1x PIC16F628A Programmed Microcontroller IC
   1x LM311 IC
   1x 18 DIP Machined IC Socket
   1x 8 DIP Machined IC Socket
   1x 78L05 5V Voltage Regulator
   1x 10K Potentiometer
   1x High Grade 82uH Inductor
   1x 4.000 MHz Crystal
   1x 5V Ceramic Reed Relay
   1x L/C Push-button Switch with Black Cap
   1x Tactile Reset Switch
   1x 100uF Panasonic Capacitor
   2x 10uF Panasonic Capacitors
   1x 100nF / 50V TDK Capacitor
   2x 1000pF 2.5% WIMA Capacitors
   2x 10pF Capacitors
   1x 16-PIN Gold Plated LCD Female Header
   1x 16-PIN Gold Plated LCD Male Header
   2x 2-PIN Gold Plated Header
   3x 100K 1% Metal Film Resistors
   1x 47K 1% Metal Film Resistor
   2x 6.8K 1% Metal Film Resistors
   1x 1K 1% Metal Film Resistor
   1x 100 1% Metal Film Resistor
   1x 33 1% Metal Film Resistor
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ESR Meter / Transistor Tester / LC Meter Kit - Blue Backlight LCD
ESR Meter / Transistor Tester / LC Meter Kit - Blue Backlight LCD
ESR Meter / Transistor Tester / LC Meter kit is an amazing auto-ranging multimeter that automatically identifies and analyzes components being tested. It measures ESR values, capacitance (100pF - 20,000uF), inductance (10uH - 20H), resistance (0.1 Ohm - 20 MOhm), tests many different types of transistors such as NPN, PNP, FETs, MOSFETs, Thyristors, SCRs, Triacs and many types of diodes. It also analyzes transistor's characteristics such as voltage and gain. It is an irreplaceable tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors. Unlike other ESR Meters that only measure ESR value this one measures capacitor's ESR value as well as its capacitance all at the same time.

Electrolytic capacitors are by far the electronic parts that suffer aging soonest. If you have any electronic equipment that over the years has degraded its performance, developed quirks, sometimes ending in complete failure, the chances are good that one or more electrolytic capacitors inside it have degraded, causing the problem. Electrolytic capacitors age in several ways: They can become electrically leaky, causing a DC current through them that can make them blow up. They can shift in capacitance value. But the most common way they degrade, by far, is by unduly increasing their equivalent series resistance, which is the undesired internal resistance that appears in series with the wanted capacitance at a given frequency.




Specifications
     ESR Measurements: 2.2uF - 20,000uF
     ESR Resolution: 0.01Ω
     Capacitance Measurements: 100pF - 20,000uF
     Inductance Measurements: 10uH - 20H
     Resistance Measurements: 0.1Ω - 20MΩ
     Tests and identifies PINs of all transistors: Bipolar (NPN, PNP), FETs, MOSFETs (N-Channel, P-Channel, enhancement-mode and depletion-mode MOSFETs), Thyristors, SCRs and Triacs.
     Tests and identifies PINs and voltage of diodes, dual diodes, varicap diodes (and their capacity), zener diodes (test voltage up to 5V) and LEDs.
     Power Requirements: 7-16V
     Current Consumption: 40mA

Component List
   1x ESR Meter / Transistor Tester Kit PCB
   1x 16 x 2 LCD Display with Blue Backlight
   1x ATMEGA328 Programmed microcontroller
   1x 28-DIP IC Socket
   1x 16-PIN Gold Plated Male Header (LCD)
   1x 16-PIN Gold Plated Female Connector (PCB)
   1x 3-PIN Gold Plated Machined Female Socket
   1x 2-PIN Gold Plated Male Header
   1x 78L05 5V Voltage Regulator
   1x Tactile Switch
   1x 10K LCD Contrast Potentiometer
   1x 1000pF 2.5% WIMA Capacitor
   1x 100uF Panasonic Capacitor
   2x 100nF Mylar Capacitors
11 x 1% Metal Film Resistors
   1x ESR Meter manual with schematic and assembly instructions
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Audiophile Headphone Amplifier Kit
Audiophile Headphone Amplifier Kit
Audiophile headphone amplifier kit includes high quality audio grade components such as Burr Brown OPA2134 opamp, ALPS volume control potentiometer, Ti TLE2426 rail splitter, Ultra-Low ESR 470uF Panasonic FM filtering capacitors, High quality WIMA input and decoupling capacitors and Vishay Dale resistors. 8-DIP machined IC socket allows to swap OPA2134 with many other dual opamp chips such as OPA2132, OPA2107, OPA2227, OPA2228, dual OPA132, OPA627, etc. Headphone amplifier is small enough to fit in Altoids tin box, and thanks to low power consumption may be supplied from a single 9V battery.



     Burr Brown OPA2134 opamp for excellent audio performance
     ALPS volume control potentiometer (Made in Japan)
     Ti TLE2426 rail splitter provides dual rail supply from single battery operation
     Ultra-Low ESR 470uF Panasonic FM filtering capacitors
     High quality WIMA input and decoupling capacitors (Made in Germany)
     Audio grade Vishay Dale resistors
     8-DIP machined IC socket allows to swap OPA2134 with many other opamp chips
     Input voltage supply 4-20V / 4-32V (if requested). Can be supplied from a single 9V or 4.2V LIPO battery
     Low power consumption (14mA)
     High quality 3.5mm audio sockets for headphones and input
     Comes with 9V battery clip
     Compact form factor (4cm x 3.3cm)
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Micro SD MP3 Player
Micro SD MP3 Player
Complete MP3 player that plays MP3 audio files stored on microSD memory card. New audio DAC chip supports microSD cards up to 128GB (FAT32 format), and provides excellent sound quality and base.



Features
     Single chip microSD MP3 Player
     Plays MP3 audio files stored on microSD memory card
     Button Functions: Play/Pause, Next / Skip 10 songs, Previous / Skip 10 songs, Volume Up and Volume Down
     Support for up to 128GB microSD memory cards in FAT32 format (not included)
     Onboard connectors: microSD slot, 3.5mm headphone connector and micro USB connector
     Support for USB 2.0 data transfer
     May be used as card reader
     Includes built-in LIPO battery (rechargeable through USB connection)
     Dimensions: 28mm x 40mm x 5mm
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4-Channel 433MHz Wireless RF Remote Control (Transmitter + Receiver)
4-Channel 433MHz Wireless RF Remote Control (Transmitter + Receiver)
4 Channel RF Remote Transmitter and Receiver allows to remotely control four appliances. RF Remote Control provides 4 momentary outputs that can be wired to relays and control home appliances, lights, motors, light dimmers, robotic devices, RC cars, computer, etc. RF transmitter provides up to 150m range. Selection of custom address codes allows to operate more than one remote control system in the same area or to control one receiver with multiple transmitters. If required momentary outputs can be converted to toggle with low cost digital 4013 IC. 12V (27A) alkaline battery is included.

Specifications
     4 Momentary Outputs
     150m Transmission Range
     Rock-solid oscillator provides reliable operation
     Valid transmission LED status through VT connection
     High noise immunity
     Standard header connection (breadboard compatible)
     Selection of custom address codes allows to operate more than one unit in the same area or controlling the same receiver with multiple remotes

RF Transmitter Specifications
     Voltage Supply: 12V (Included 27A Alkaline Battery)
     Transmission Frequency: 433MHz
     Transmission Range: 150m
     Dimensions: 62 mm x 38 mm x 14 mm

RF Receiver Specifications
     Voltage Supply: 5V
     Transmission Frequency: 433MHz
     Output Mode: Momentary
     Power Consumption: 5 mA
     Receiving Sensitivity: -101 dbm
     Output PINs: GND, 5V, D0, D1, D2, D3, VT (Status LED)
     Dimensions: 41 mm x 22 mm x 6 mm
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Accurate USB 0-500MHz RF Power Meter Kit
Accurate USB 0-500MHz RF Power Meter Kit
With Accurate USB 0-500MHz RF Power Meter measurement of transmitter's output RF power has never been easier and more precise. Meter allows to measure RF power of transmitters in dBm, Watts (nW, uW, mW and W range) as well as input voltage. USB RF Power Meter is based on popular AD8307 watt power meter IC and PIC18F2550 microcontroller. Simply connect it to a PC via USB port and measurement readings will be displayed on a computer using included USB RF Power Meter software. Software settings can be configured to use 10-50dBm attenuator and thus allowing to measure higher RF power.

Specifications
     Measures RF Power from 1nW to 2W (50W with 40dB attenuator) / -66.6dBm to 33dBm
     Auto-range RF Wattage Measurement: nW, uW, mW and W
     Frequency Input: 0-500MHz
     Self-powered by USB port

Component List
   1x RF Power Meter Probe PCB
   1x USB IO Board PCB
   1x AD8307 RF Power Meter IC
   1x Programmed PIC18F2550 / PIC18F2455 Microcontroller
   1x 28-DIP IC Socket
   1x USB Type B Connector
   1x 20MHz Crystal Resonator
   6x 100n Capacitor
   1x 470K 1% Metal Film Resistor
   2x 100 Ohm 1% Metal Film Resistor
   2x 10K Micro Resistor
   1x Cable wires
   1x Instructions with schematics

Included Software
   1x USB RF Power Meter software (Windows 2000, XP, VISTA, Win7)
   1x USB RF Power Meter Drivers (Windows 2000, XP, VISTA, Win7)
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nRF24L01 2.4GHz Wireless Transceiver with Antenna
nRF24L01 2.4GHz Wireless Transceiver with Antenna
nRF2401A 2.4GHz transceiver modules with built-in antenna. Designed around nRF2401A chip with improved sensitivity and range. Two units are required for a complete link.

     Frequency: 2.4GHz
     Built-in 2.4Ghz antenna
     Data Rate: up to 2Mbps
     Standard 0.1"    2x 4 PIN header (breadboard compatible)
     Voltage: 1.9 ~ 3.6V
     Dimensions: 17 x 34 x 1 mm
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1A Mini USB LIPO Battery Charger
1A Mini USB LIPO Battery Charger
1A Mini USB LIPO battery charger designed to charge 3.7V LIPO / Li-Ion / Lithium Polymer batteries.

     Input Voltage: Mini USB / 4.5-5.5V
     Charging Voltage: 4.2V
     Charging Current: 1A
     Charging current adjustable via R PROG resistor: 1A - 1.2K (default), 900mA - 1.3K, 780mA - 1.5K, 580mA - 2K, 400mA - 3K, 250mA - 4K, 200mA - 6.2K
     Two LEDs indicate charging status
     Dimensions: 19 x 25 mm
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Laser Module - 5mW 650nm Red
Laser Module - 5mW 650nm Red
Powerful 5mW RED laser module with over 2 miles range. Fun to play with or used as a pointer, level, etc. Encapsulated laser is Class IIIa 5mW, with a 650nm red wavelength. They can be driven from 3V to 5V and they're great for electronics projects.

     Output Power: 5mW
     Wavelength: 650nm
     Visible Range: > 2 miles / 3km
     Working Voltage: 3-5V
     Operating Current: 40 mA
     Laser Shape: Dot
     Dimensions:    6x 10 mm
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18W TDA2030A Hi-Fi Stereo Audio Amplifier Kit
18W TDA2030A Hi-Fi Stereo Audio Amplifier Kit
Stereo power amplifier based around two TDA2030 ICs. It has good input sensitivity, low distortion, good operating stability and full protection against overloads and output short-circuits.

18W TDA2030A Stereo Audio Amplifier Kit can be used as a booster amplifier for existing small systems or to drive a second pair of speakers besides the ones already connected to the system.

The board needs a dual power supply of +/-18V and can be connected to 8 or 4 Ohm speakers. Heatsink not supplied with the kit.



Specifications:
     Supply Voltage: +/- 9-12V AC (+/- 12V DC)
     Output Power:    2x 18W,    1x 36W
     Current consumption: 3A maximum
     Input impedance: 500K Ohms
     Input sensitivity: 250 mV
     Signal to noise ratio: 80 dB
     Frequency response: 20 - 20,000 Hz 1 dB
     Distortion: 0.5 % maximum
     Load impedance: 4 - 8 ohm
     Dimension: 90mm x 40mm x 25mm
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Mini FM Transmitter
Mini FM Transmitter
Mini FM Transmitter transmits audio through on-board microphone for up to 300 meters. Transmitter has high sensitivity microphone and good frequency stability. It is great for room monitoring, baby listening, nature research, etc. Frequency is adjusted via onboard variable coil.

Specifications
     Adjustable Frequency: 88-108MHz
     Transmission Range: 300 meters
     Voltage Supply: 3-9V
     Dimensions: 0.75" x 1.4" (2 cm x 3.5 cm)
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Voltmeter Ammeter Kit - Blue Backlight LCD
Voltmeter Ammeter Kit - Blue Backlight LCD
Voltmeter Ammeter is a great kit to measure voltage and current at the same time. It measures 0-70V or 0-500V voltage with 100mV resolution and current from 0 to 10A. It's a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. Kit uses PIC16F876A microcontroller with built-in ADC (Analog to Digital Converter) to sample voltage with current and display it on 16 x 2 backlighted LCD display. It comes with all the parts required to build high quality kit, including double-sided PCB with beautiful red solder mask and plated through holes. With slight modification it is possible to measure higher voltage and current. To measure voltage that is higher than 70 Volts simply replace R3 6.8K resistor with included 1K resistor. This will allow to measure up to 500 Volts. To measure current that is higher than 10A simply replace 0.1 Ohm 5W power resistor with higher wattage resistor. For example 20W 0.1 Ohm resistor will allow to measure up to 20 Amperes. Kit can also measure AC voltage if rectifier bridge is added to voltage input as well as measure and be supplied by the same power source.

Specifications
     Voltage Input: 0 - 70V / 0 - 500V
     Current Input: 0 - 10A
     Voltage Supply: 6 - 30V
     Current Consumption: 30mA

Component List
   1x 16 x 2 LCD Display with Blue Backlight
   1x PIC16F876A - Programmed microcontroller
   1x High Quality PCB with red solder mask and plated through holes
   1x 28-DIP IC Socket
   1x 4MHz Resonator
   1x 16 x 1 Gold Plated Male Header
   1x 16 x 1 Gold Plated Female Header
   1x 4 x 1 Gold Plated Header
   1x LM7805 5V Voltage Regulator
   1x 10K Trimmer Potentiometer
   1x 4 x 10K Network Resistor
   2x 100K 1% Metal Film Resistor
   2x 6.8K 1% Metal Film Resistor
   1x 1K 1% Metal Film Resistor
   1x 33 1% Metal Film Resistor
   1x 0.1 Ohm 5W Power Resistor
   1x 100uF Panasonic Capacitor
   1x 100nF Multilayer Ceramic Capacitor
   1x Manual with Schematic
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60MHz Frequency Meter / Counter Kit
60MHz Frequency Meter / Counter Kit
60MHz Frequency Meter / Counter kit measures frequency from 10Hz to 60MHz with 10Hz resolution. It is extremely useful bench test equipment for testing and measuring frequency of oscillators, transmitters, radio receivers, function generators, crystals, etc. Counter provides exceptionally stable readings and has excellent input sensitivity thanks to onboard amplifier and TTL converter. It can be even used for measuring weak signals from crystal oscillators. With the addition of simple prescaller it is possible to measure frequency up to 1GHz or more. Counter's measuring range has now been extended form 50MHz up to 60MHz.

Click here for more information and schematic

Specifications
     Voltage Supply: 7V - 16V
     Power Consumption: 80mA with LCD backlight
     Frequency Measurement: 10Hz - 60MHz
     Measurement Resolution: 10Hz

Component List
   1x 16 x 2 LCD Display with Green Backlight
   1x PIC16F628A Programmed Microcontroller
   1x PCB
   1x 18-DIP IC Socket
   1x 4.000MHz Crystal
   1x LM7805 5V Voltage Regulator
   1x 1 x 16 Gold Plated Female Header (for PCB)
   1x 1 x 16 Gold Plated Male Header (for LCD)
   2x 1 x 2 Gold Plated Male Header (for LCD)
   1x BF199
   1x 10uH Inductor
   1x 10K Trimmer
   1x 10K 1% Metal Film Resistor
   2x 470 1% Metal Film Resistor
   1x 33 1% Metal Film Resistor
   1x 100uF Panasonic Capacitor
   2x 100nF Multilayer Ceramic Capacitor
   2x 10pF Ceramic Capacitor
   1x Manual with Schematic

Related Products
     1Hz - 2MHz XR2206 Function Generator Kit
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BH1417 Stereo PLL FM Transmitter Parts
BH1417 Stereo PLL FM Transmitter Parts
List of components for building BH1417 Stereo PLL FM Transmitter project. Add our 500mW FM / VHF Transmitter Amplifier / Booster for even longer range.

Component List
   1x BH1417 - Stereo PLL Transmitter IC
   1x SOIC 28 to 28 DIP Adapter
   1x 7.6 MHz Crystal
   1x 5.5 Turns Variable Coil
   1x MV2109 Varicap Diode
   1x 4-DIP Switch
   1x MPSA13 NPN Darlington Transistor
   1x 100uF Nichicon Gold Capacitor
   3x 10uF Nichicon Gold Capacitor
   2x 1uF Nichicon Gold Capacitor
   1x 47nF Capacitor
   3x 2.2nF Capacitor
   1x 1nF Capacitor
   1x 330pF Capacitor
   2x 150pF Capacitor
   1x 33pF Capacitor
   2x 27pF Capacitor
   1x 22pF Capacitor
   2x 10pF Capacitor
   1x 22K Resistor
7x 10K Resistor
   1x 5.1K Resistor
   2x 3.3K Resistor
   1x 100 Ohm Resistor
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TDA7000 FM Receiver (Parts)
TDA7000 FM Receiver (Parts)
This simple one chip FM receiver / TV tuner will allow you to receive frequencies from 70 up to 120MHz. With this small receiver it is possible to pick up TV stations, entire 88 - 108MHz FM band, aircraft conversation and many other private transmissions. It is a perfect companion to any FM Transmitter especially if FM band in your area is very crowded. TDA7000 receiver offers very good sensitivity therefore it will even allow you to pickup weaker signals that cannot be heard on conventional FM receivers. A neat feature of presented TDA7000 FM receiver is a voltage controlled oscillator similar to TV tuners that are used in television sets. Frequency is tuned by varying the input voltage to the oscillator. The advantage of this type of oscillator is that you can use regular 100K potentiometer to precisely tune to a given broadcast. Tuning can be performed much quicker and precisely than by using a trimmer (variable capacitor). Trimmers will also shift the frequency as you touch them where potentiometer will not. Trimmer also needs to be placed on receiver's PCB to minimize the stray capacitance where potentiometer can be conveniently placed anywhere you want because it will not be affected by any external capacitance.

Click here to view TDA7000 FM receiver schematic & description

Component List
   1x TDA7000
   1x 18-PIN IC Socket
   1x 5.5T Variable Coil
   1x MV2105 - Varicap Diode
   1x 100K Potentiometer
   1x 100K Resistor
   1x 22K Resistor
   1x 10K Resistor
   3x 100nF Capacitor
   1x 22nF Capacitor
   1x 10nF Capacitor
   2x 3.3nF Capacitor
   1x 2.2nF Capacitor
   1x 1nF Capacitor
   2x 330pF Capacitor
   2x 220pF Capacitor
   2x 180pF Capacitor
   1x 150pF Capacitor
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ICL8038 - Precision Waveform Generator
ICL8038 - Precision Waveform Generator
ICL8038 is a precision waveform generator with voltage control for generating accurate sine, square, triangular, sawtooth and pulse waveforms. The output frequency was set by resistors and capacitors and covers a range from 0.001 Hz to more than 300 kHz.
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Stereo Encoder / Multiplexer Kit
Stereo Encoder / Multiplexer Kit
Stereo Encoder / Multiplexer kit enables stereo audio broadcast through any mono FM transmitter. It connects to mono FM transmitter's audio input and converts it into HI-FI Stereo FM Transmitter. NJM2035 IC features rock solid stereo MPX and PILOT clock based around 38KHz crystal. Stereo encoder is supplied by 1.5 - 3 Volts and draws only 2mA of current. Built-in stereo pre-emphasis enhances and produces crystal clear audio output. NJM2035 chip is manufactured by NJR CORPORATION (JRC), a subsidiary of New Japan Radio, a company that is known as the world's best manufacturer of high end professional audio semiconductors.

Specifications
     Audio Input: Stereo (Left + Right audio channels)
     Output: MPX (connects to mono FM transmitter's audio input)
     SNR: 67dB
     Channel Separation: 40 dB
     Power Supply: 1.5 - 3V
     Operating Current: 2mA
     Dimensions: 1" x 1.75" (28mm x 46mm)

Component List
   1x NJM2035 IC
   1x PCB with Red Solder Mask
   1x 14-DIP IC Socket
   1x 38KHz Crystal
   1x 50K Potentiometer
   1x 33uF Panasonic Capacitor
   1x 10uF Panasonic Capacitor
   4x 100nF Capacitors
   2x 1nF Capacitors
   1x 100pF Capacitor
   1x 10pF Capacitor
   1x 10K 1% Metal Film Resistor
   2x 47K 1% Metal Film Resistors
   1x 82K 1% Metal Film Resistor
   1x Manual with schematic and instructions
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Dual Channel Voltmeter Kit
Dual Channel Voltmeter Kit
Dual channel voltmeter measures voltage from 0V up to 70V providing excellent reading accuracy and 100mV resolution. It has two input channels for measuring two voltage sources at the same time. Dual channel voltmeter kit uses PIC16F876A microcontroller with built-in ADC (Analog to Digital Converter) and 16 x 2 backlighted LCD display.



Kit comes with all components required to build high quality dual channel voltmeter kit including premium quality PCB. Voltmeter can also measure AC voltage if full bridge rectifier is added to voltage input. Dual channel voltmeter can both measure and be supplied by the same power source.

Dual Channel Voltmeter Schematic

Component List
   1x 16 x 2 LCD Display with Green Backlight
   1x PIC16F876A - Programmed microcontroller
   1x High Quality PCB with red solder mask and plated through holes
   1x 28-DIP IC Socket
   1x 4MHz Resonator
   1x 16 x 1 Gold Plated Male Header
   1x 16 x 1 Gold Plated Female Header
   1x 4 x 1 Gold Plated Header
   1x LM7805 5V Voltage Regulator
   1x 10K Trimmer Potentiometer
   1x 4 x 10K Network Resistor
   2x 100K 1% Metal Film Resistor
   2x 6.8K 1% Metal Film Resistor
   1x 10 1% Metal Film Resistor
   1x 100uF Panasonic Capacitor
   1x 100nF Multilayer Ceramic Capacitor
   1x Manual with Schematic
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3-32V to 5-35V 4A Adjustable DC to DC Step Up Power Converter
3-32V to 5-35V 4A Adjustable DC to DC Step Up Power Converter
High performance adjustable step up DC to DC power module allows to convert low voltage of 3-32V into higher 5-35V voltage. Uses latest switching XL6009 chip with a built-in 4A MOSFET transistor for high energy transfer and up to 94% efficiency. High switching frequency of 400KHz minimizes output ripples and noise. Output voltage is adjusted via on board multi-turn potentiometer. Can be used to build small battery powered bench power supply. Module dimensions are 43mm x 21mm x 14mm (WxDxH).

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USB Relay Controller
USB Relay Controller
Control up to eight devices with your computer using this USB relay controller board. Comes with Relay Controller software to control your devices from a PC. 12V relays are not included.

Specifications
     Voltage Supply: 12V
     PCB Dimensions: 18mm x 59mm / 0.7" x 2.3"

USB relay controller

Component List
   1x PIC18F2550 Programmed Microcontroller (MCU)
   1x USB Relay Controller PCB
   1x 28-DIP IC Socket
   1x USB Type B Connector
   1x Gold Plated 12-PIN LCD Male Header
   1x Gold Plated 8-PIN LCD Male Header
   1x 20MHz Crystal Resonator
   8x BC549 Transistor
   8x 1K Resistor
   2x 10K Resistor
   1x 100uF Panasonic Capacitor
   2x 100nF Multilayer Ceramic Capacitor
   1x Instructions with Schematic
   1x USB Relay Controller software (Win 10, 8, 7, XP, VISTA)

Relays are not included.
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Arduino Prototype Kit
Arduino Prototype Kit
Arduino Prototype is a spectacular development board fully compatible with Arduino Pro. It's breadboard compatible so it can be plugged into a breadboard for quick prototyping, and it has VCC & GND power pins available on both sides of PCB. It's small, power efficient, yet customizable through onboard 2 x 7 perfboard that can be used for connecting various sensors and connectors. Arduino Prototype uses all standard through-hole components for easy construction, two of which are hidden underneath IC socket. Board features 28-PIN DIP IC socket, user replaceable ATmega328 microcontroller flashed with Arduino bootloader, 16MHz crystal resonator and a reset switch. It has 14 digital input/output pins (0-13) of which 6 can be used as PWM outputs and 6 analog inputs (A0-A5). Arduino sketches are uploaded through any USB-Serial adapter connected to 6-PIN ICSP female header. Board is supplied by 2-5V voltage and may be powered by a battery such as Lithium Ion cell, two AA cells, external power supply or USB power adapter.

Specifications
     100% compatible with Arduino IDE (Tools > Board > Arduino Pro (5V, 16MHz) w/ ATmega328)
     Microcontroller: ATmega328
     Low Power Consumption
     Operating Voltage: 2 - 5V
     Digital I/O Pins: 14 (of which 6 provide PWM output)
     Analog Input Pins: 6
     Flash Memory: 32KB of which 2 KB is used by Arduino bootloader
     SRAM: 2 KB
     EEPROM: 1 KB
     PCB Dimensions: 18mm x 50mm



Component List
   1x ATmega328 microcontroller programmed with Arduino Bootloader
   1x Arduino Prototype PCB
   1x 28-DIP IC Socket
   1x 16MHz Crystal Resonator
   1x Tactile Switch
   1x Gold Plated 6-PIN Female Header
   1x Gold Plated 14-PIN Male Header
   1x Gold Plated 7-PIN Male Header
   1x Gold Plated 6-PIN Male Header
   1x Gold Plated 4-PIN Male Header
   1x 10K Micro Resistor
   1x 47uF Capacitor
   2x 100nF Capacitors
   1x Instructions with Schematic
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ESP8266 WiFi Module
ESP8266 WiFi Module
The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that's just out of the box)! The ESP8266 module is an extremely cost effective board with a huge, and ever growing, community.

This module has a powerful enough on-board processing and storage capability that allows it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, including the front-end module, is designed to occupy minimal PCB area. The ESP8266 supports APSD for VoIP applications and Bluetooth co-existance interfaces, it contains a self-calibrated RF allowing it to work under all operating conditions, and requires no external RF parts.

There is an almost limitless fountain of information available for the ESP8266, all of which has been provided by amazing community support. In the Documents section below you will find many resources to aid you in using the ESP8266, even instructions on how to transforming this module into an IoT (Internet of Things) solution!

Instructables Tutorial
http://www.instructables.com/id/Using-the-ESP8266-module

Features
     802.11 b/g/n
     Wi-Fi Direct (P2P), soft-AP
     Integrated TCP/IP protocol stack
     Integrated TR switch, balun, LNA, power amplifier and matching network
     Integrated PLLs, regulators, DCXO and power management units
     +19.5dBm output power in 802.11b mode
     Power down leakage current of <10uA
     Integrated low power 32-bit CPU could be used as application processor
     SDIO 1.1 / 2.0, SPI, UART
     STBC,    1x 1 MIMO,    2x 1 MIMO
     A-MPDU & A-MSDU aggregation & 0.4ms guard interval
     Wake up and transmit packets in < 2ms
     Standby power consumption of < 1.0mW (DTIM3)
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USB AVR Programmer
USB AVR Programmer
Compact USB AVR Programmer for programming many ATmega, Tiny and classic ATMEL microcontrollers. Perfect for in-circuit AVR development. Allows to read and write microcontroller's firmware, EEPROM, fuse bits and lock bits. Supports Windows XP, 7, Linux and Mac OSX. The USB interface is achieved with ATmega8 microprocessor. USB AVR Programmer comes with 2-feet cable and standard 10-PIN ISP interface connector. Supports AVRDude and many other GUI AVR programming software.

Supported microcontrollers: ATmega8, ATmega16, ATmega32, ATmega48, ATmega64, ATmega88, ATmega103, ATmega128, ATmega161, ATmega162, ATmega163, ATmega164, ATmega168, ATmega169, ATmega324, ATmega328, ATmega329, ATmega640, ATmega644, ATmega649, ATmega1280, ATmega1281, ATmega2560, ATmega2561, ATmega3290, ATmega6490, ATmega8515, ATmega8535, ATtiny12, ATtiny13, ATtiny15, ATtiny25, ATtiny26, ATtiny45, ATtiny85, ATtiny2313, AT90S1200, AT90S2313, AT90S2333, AT90S2343, AT90S4414, AT90S4433, AT90S4434, AT90S8515, AT90S8535, AT90CAN128, AT90PWM2, AT90PWM3.

Features:
     Compact USB-powered USB AVR Programmer
     Supports ATmega, Tiny and classic ATMEL microcontrollers
     Onboard ATmega8 microcontroller
     USB specification 1.1 and 2.0 compliant
     Windows XP, 7 Linux and Mac OSX supported
     Comes with Windows XP, 7 drivers, no diver required for Linux and Mac OSX
     Comes with links to several GUI AVR programming software
     Cable length: 2 feet
     Standard 10-PIN ISP interface connector
     Provides 3.3V and 5V output power for testing electronic projects
     Comes with User Manual that includes target ATMEGA board schematic, link to XP/Win7 drivers, links to many GUI programming software and sample commands for programming with AVRDude.
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Humidity Temperature Meter
Humidity Temperature Meter
Provides simultaneous monitoring of humidity and temperature on large LCD display which can be read from across the room. For labs, chemical storage areas, clean rooms, stock rooms, warehouses, factories, greenhouses, and outdoors. Monitor humidity and temperature in desiccators, incubators, refrigerators, and fume hoods. Comes with LR44 battery.

Specifications:
     Temperature range: -40 C to 70 C (-40 F to 158 F)
     Humidity range: 10% RH to 99% RH
     Temperature resolution: 1 C
     Humidity resolution: 1% RH
     Size: 57mm (L) x 32mm (W) x 11.5mm (H)
     Battery: LR44 (included)
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PIR Motion Sensor Detector
PIR Motion Sensor Detector
PIR motion sensor allows to detect human's presence/motion. Great for security lights, security systems, toys, etc. PIR sensor offers adjustable sensitivity (1-7 meters / 3-20 feet), built-in timer adjustable from 2 - 200 seconds, wide 4V - 20 V voltage supply, ultra-low power consumption and small size. When person enters in PIR sensor work range the output PIN goes high (3V). When person leaves the sensor's range the output remains high for 2-200 seconds (adjustable) and turns off (0V).



Specifications:
     Input Voltage: 4V - 20 V
     Output PIN Voltage: 3V when ON, 0V when OFF
     Micropower: quiescent current < 50 uA
     ON Delay Timer: 2 - 200 seconds (adjustable)
     Trigger mode: L - unrepeatable trigger / H - Repeatable Trigger (default)
     Detector range: 1-7 meters / 3-20 feet (adjustable)
     Detector angle: 140 Degrees
     Dimensions: 24 x 32 x 28 mm (0.945 x 1.26 x 1.1 inch)
     Working temperature: - 20˚C ~ + 60˚C

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USB to RS232 TTL Adapter
USB to RS232 TTL Adapter
USB to RS232 TTL Adapter for establishing serial communication between microcontrollers and USB equipped computer. Adapter provides TTL compatible TX/RX data outputs with 5V and 3.3V voltage outputs for powering microcontroller chips.

Description:
     Compatibile with Arduino AVR PIC microcontrollers
     TTL TX/RX data outputs
     Onboard transfer and power LEDs
     Adapter wires included
     Provides 5V and 3.3V voltage outputs
     USB specification 1.1 and 2.0 compliant
     Windows 98/SE/ME/2000/XP/VISTA/Win7 drivers included
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Serial I2C LCD Display Adapter
Serial I2C LCD Display Adapter
Serial I2C LCD display adapter converts parallel based 16 x 2 character LCD display into a serial i2C LCD that can be controlled through just 2 wires. Adapter uses PCF8574 chip that serves as I/O expander that communicates with Arduino or any other microcontroller by using I2C protocol. A total of 8 LCD displays can be connected to the same two wire I2C bus with each board having a different address. The default i2C address is 0X27 and may be changed to any of the following 0X20~0X27 via soldering A0 A1 A2 pins.

Schematic and sample Arduino code
http://electronics-diy.com/two-wire-i2c-arduino-lcd-display.php

Features
     16 x 2 Character LCD display is controlled via just two wires
     Up to 8 LCD displays with adapters can be connected and controlled by the same two wire I2C bus
     Easy to control using Arduino board
     Compatible with 16 x 2 character LCD displays
     Adapter includes 16-PIN male header connector for soldering to LCD display
     Contrast is adjusted via onboard potentiometer
     Backlight may be turned on/off via jumper
     Standard 5V voltage supply
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ENC28J60 Ethernet Controller
ENC28J60 Ethernet Controller
ENC28J60 is a complete easy to use 10Mbps ethernet controller from Microchip. It's easy to control with Arduino or microcontroller via SPI serial interface. ENC28J60 minimizes complexity, board space and cost. Add RJ45 socket and few other components to build your own network / internet connected projects.

     Date rate: 10Mbps
     SPI interface
     28-pin DIP package
     Supply current: 180mA
     Supply Voltage Range: 3.1 to 3.6V (3.3V typical)
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USB to Serial Arduino Programmer
USB to Serial Arduino Programmer
USB to serial arduino programmer allows to upload arduino sketches into ATMEGA328, ATMEGA168, ATMEGA8 chips. Adapter provides TTL compatible TX/RX data outputs, DTR RESET pin, and 5V / 3.3V user selectable voltage output for powering microcontroller chip. Comes with five jumper wires.

     Compatibile with Arduino AVR PIC microcontrollers
     TTL TX/RX data outputs
     Onboard transfer and power LEDs
     Adapter wires included
     User selectable 5V / 3.3V voltage output
     USB specification 1.1 and 2.0 compliant
     Windows 98/SE/ME/2000/XP/VISTA/Win7 drivers included
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BH1415 Stereo Encoder (parts, no PCB)
BH1415 Stereo Encoder (parts, no PCB)
This is the latest MPX BH1415 Stereo Encoder that includes a lot of great features in one small package. The heart of Stereo Encoder is a new BH1415 chip from RHOM that includes components that were previously only available in expensive broadcast quality stereo encoders. Connect this stereo encoder to any mono FM transmitter to convert it into Hi-Fi stereo FM transmitter.

Circuit features built-in; crystal oscillator based stereo audio encoding, pre-emphasis for reducing transmission noise, limiter so that the music can be transmitted at the same audio level and 15KHz brickwall low pass filter that blocks any audio signals above 15KHz to prevent any RF interference.

For limited time we include SOIC 28 to DIL adapter free of charge.


Specifications
     Crystal based stereo encoder
     15KHz brickwall filter
     Audio Limiter
     Pre-emphasis
     Excellent channel separation

Component List
   1x BH1415 - Stereo PLL Transmitter IC
   1x 7.6 MHz Crystal
   1x 78L05 Voltage Regulator
   1x 10K Resistor
   3x 10uF Capacitor
   2x 1uF Capacitor
   2x 2.2nF Capacitor
   1x 1nF Capacitor
   2x 150pF Capacitor
   2x 27pF Capacitor
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RGB LED Candle (parts)
RGB LED Candle (parts)
Simple RGB LED candle circuit with the use of PIC12F675 microcontroller and super bright RGB LED. RGB LED candle can be customized for either White, Red, Green, Blue, Violet and Yellow colors. Includes programmed ready to use PIC12F675 microcontroller. LED Candle can be supplied by either two or three AAA / AA batteries or 3V CR type button battery.

Specifications
     Operating voltage: 2V - 5.5V
     LED Colors: White, Red, Green, Blue, Violet and Yellow

Component List
   1x Programmed PIC12F675 with LED Candle program (DIP-8 case)
   1x Super Bright Clear RGB LED (5mm)
   1x 100n Capacitor
   1x Instructions with schematic
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