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Humidity and Temperature Sensor - DHT11
Humidity and Temperature Sensor - DHT11
DHT11 is an exciting all in one humidity and temperature sensor featuring 1-wire digital interface. Sensor comes factory calibrated with very stable readings and requires no external components to measure humidity and temperature.

     Factory calibrated
     Ultra-long signal transmission distance
     No external components needed
     Ultra-low 60μA standby current
     Operating Voltage: 3.5 - 5.5V
     RH Humidity Range: 20 - 90%
     Temperature Range: 0 - 50 degrees Celsius
     Breadboard compatible 0.1" PIN spacing
     Connections: (1) VCC, (2) DATA, (3) Unused, (4) GND
     Dimensions: 23 mm x 12 mm x 5 mm
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Ultrasonic Distance Measuring Sensor - HC-SR04
Ultrasonic Distance Measuring Sensor - HC-SR04
HC-SR04 is an ultrasonic sensor that uses sonar to determine distance to an object. It provides very accurate distance measurement readings from 0 - 450cm. It's extremely easy to use and fun to work with.

     Detection Distance: 0 - 450cm
     High Measurement Accuracy: 2mm
     Small, light weight and easy to work with
     Supply Voltage: 5V
     Supply Current: < 2mA
     Frequency: 40KHz
     PINs: VCC (5V), Trig, Echo, GND
     Dimensions: 4.5 x 2 x 1.5 cm
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Price: $9.95
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Mini Spy Microphone
Mini Spy Microphone
Tiny electret microphone with excellent sound sensitivity.

     Voltage Supply: 1 - 10V
     Current Consumption: 0.5mA
     Impedance: 2.2K
     Dimensions: 2.2mm x 6mm
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Price: $0.95
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CDS Photoresistor
CDS Photoresistor
Small CDS Photoresistor cell varies resistance with varying levels of light. Photo cell has been dipped in clean moisture-proof coating for protection. It has long leads. Resistance varies to over 1 MOhm in the dark and below 100 Ohm in the bright light.

     Dimensions: 6 x 7 mm
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Infrared IR Receiver
Infrared IR Receiver
This small IR receiver is compatible with most commercial IR remotes out there. It's perfect for any IR remote control project for controlling relays, motors, lights, or adding input interface through any IR remote control. IR receiver features low power consumption as well as internal photo detector with preamplifier for boosting sensitivity and extending control range. IR receiver's output pin can be directly connected to ATMEL / PIC microcontrollers and Arduino for decoding.

     Carrier Frequency: 38KHz
     Improved immunity against ambient light
     Photo detector and preamplifier in one package
     Low Power Consumption
     Voltage Supply: 2.7-5.5V
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Electret Microphone
Electret Microphone
Small electret microphone features 100Hz-10KHz frequency response. Operates on 2V to 10V voltage. Size: 9mm (.36") x 6mm (.25") Width x High. Sensitivity: -50db@1kHz, S/N Ratio: 80dB, Current consumption: 650uA, Impedance: 1Kohm.
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Buzzer Alarm
Buzzer Alarm
Small 12mm round buzzer that operates around audible 2KHz tone range. Voltage can be varied to generate different tones. Can be connected directly PIC / AVR microcontroller to generate the tones. Use buzzers to create simple music or user interfaces.

     Operating Voltage: 1.5V - 12V
     Rated Current: 30mA (MAX)
     Output Sound: 85-92dB
     Sound Type: Continuous Sound
     Dimensions: 12mm
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Price: $1.95
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BMP280 Barometric Pressure & Temperature Sensor
BMP280 Barometric Pressure & Temperature Sensor
Newest high precision Bosch BMP280 barometric pressure & temperature sensor. Offers pressure measuring range of 300 to 1100 hPa with an accuracy of 0.01 hPa (higher accuracy than older BMP180 at 0.02 hPa resolution). Excellent for barometric pressure, elevation & vertical velocity speed measurements. It's based on piezo-resistive technology for high accuracy, ruggedness and long term stability. Comes with breadboard compatible 6-PIN header.

     Includes barometric & temperature sensor
     Connects to a microcontroller or Arduino via I2C bus (SCL->A5, SDA->A4) or SPI (SCL->SCK, CSB->MISO, SDA->MOSI, CSB->CS)
     Two wire interface, SCL & SDA are 5V tolerant
     Factory calibrated with the calibration coefficients stored in ROM
     Voltage supply (VIN): 1.8V to 3.6V (3.3V typical)
     Ultra low power consumption
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Price: $5.95
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BMP180 Barometric Pressure & Temperature Sensor
BMP180 Barometric Pressure & Temperature Sensor
BMP180 barometric pressure & temperature sensor. Excellent for barometric pressure, elevation & vertical velocity speed measurements. It's based on piezo-resistive technology for high accuracy, ruggedness and long term stability. Comes with breadboard compatible 4-PIN header.

     Includes barometric & temperature sensor
     Connects to a microcontroller or Arduino via I2C bus (SCL->A5, SDA->A4)
     Two wire interface, SCL & SDA are 5V tolerant
     Factory calibrated with the calibration coefficients stored in ROM
     Voltage supply (VIN): 1.8V to 3.6V (3.3V typical)
     Ultra low power consumption
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1K Thermistor
1K Thermistor
1K thermistor with a negative temperature coefficient. Great for temperature related applications.
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10K NTC Thermistor
10K NTC Thermistor
10K NTC thermistor great for temperature related applications.
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IR Infrared LED
IR Infrared LED
High output 5mm infrared IR LED excellent for remote control and remote data communication.

     Lens size: 5mm
     Peak Wavelength: 950nm
     Forward Current: 100mA
     Forward Voltage: 1.2-1.4V
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HMC5883L 3-Axis Compass Magnetometer
HMC5883L 3-Axis Compass Magnetometer
Three-axis magnetic field compass module.

     Communication: Standard IIC communication protocol
     Voltage: 3-5V
     Dimensions: Size: 18 mm x 13 mm
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DS18B20 1-Wire Digital Temperature Sensor
DS18B20 1-Wire Digital Temperature Sensor
This is the latest DS18B20 1-Wire digital temperature sensor from Dallas Semiconductor. Measures temperature in degrees C with 9 to 12-bit precision from -55C to 125C (+/-0.5C). Each sensor has a unique 64-Bit Serial number built-in allowing many sensors to be connected to the same one wire data bus. It is a state of the art computer-like component for many data-logging and temperature control projects.

     Voltage Supply: 3 - 5.5V
     Case: TO-92
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IR Photodiode
IR Photodiode
IR Photodiode detector great for building IR remote control applications.

     Sensitivity: 940 nm
     Dimensions: 7 mm x 8 mm x 3 mm (W x H x D)
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Price: $1.5
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MCP9700 Temperature Sensor
MCP9700 Temperature Sensor
The MCP9700 Linear Active Thermistor Intergrated Circuit (IC) is an analog temperature sensor that converts temperature to analog voltage. It's a low-cost, low-power sensor with an accuracy of +/-2 degrees Celsius from -40 degrees Celsius to +125 degrees Celsius while consuming only 6 μA of operating current.

Unlike resistive sensors (such as thermistors), the Linear Active Thermistor IC does not require an additional signal-conditioning circuit. Therefore, the biasing circuit development overhead for thermistor solutions can be avoided by implementing this low-cost device. The voltage output pin (VOUT) can be directly connected to the ADC input of a microcontroller. The MCP9700 temperature coefficients are scaled to provide a 1 degrees C / bit resolution for an 8-bit ADC value.

The MCP9700 provide a low-cost solution for applications that require measurement of temperature. This family is immune to the effects of parasitic capacitance and can drive large capacitive loads. This provides Printed Circuit Board (PCB) layout design flexibility by enabling the device to be remotely located from the microcontroller. Adding some capacitance at the output also helps the output transient response by reducing overshoots or undershoots. However, capacitive load is not required for sensor output stability.

     Temperature Range: -40 to +125 degrees Celsius
     Package: 3-Pin TO-92
     Optimized for Analog-to-Digital Converters (ADCs): - 10.0 mV / degree Celsius
     Wide Operating Voltage Range: VDD = 2.3V to 5.5V
     Low Operating Current: 6 uA (typical)
     Optimized to Drive Large Capacitive Loads (long cable runs)
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