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70V PIC Voltmeter Amperemeter (Parts)
PIC Voltmeter Amperemeter can measure voltage 0-70V with 100mV resolution and current consumption 0-10A with 10mA resolution. It is a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. The meter uses PIC16F876A microcontroller with built-in ADC (Analog to Digital Converter) and 16 x 1 green backlighted LCD display. Circuit design uses very few components and may be mounted on a small PCB.
Sample PCB Layout (2.5cm x 6cm)
View Schematic
This item comes with all the parts required to build 70V PIC Voltmeter Amperemeter expect for PCB. Voltmeter can also measure AC voltage if rectifier diode is added to voltage input. This meter can both measure and be supplied by the same power source.
Specifications
 Voltage Supply: 6 - 30V
Current Consumption: 10mA
Voltage Input: 100mV - 70V @ 100mV Resolution
Current Input: 10mA - 10A @ 10mA Resolution
Component List
1x 16 x 1 LCD Display with Green Backlight
1x PIC16F876A - Programmed microcontroller
1x 4MHz Resonator
1x LM7805 5V Voltage Regulator
2x 100K 1% Metal Film Resistor
3x 10K Resistor
1x 6.8K 1% Metal Film Resistor
1x 7.5K Resistor
1x 10 Ohm Resistor
1x 0.47 Ohm 5W Resistor
1x 100nF Ceramic Capacitor
1x Manual with Schematic |
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Dual Channel 70V PIC Voltmeter (Parts)
PIC voltmeter can measure 0-70V voltage providing excellent reading accuracy and resolution. It has two input channels for measuring two voltage sources at the same time. PIC voltmeter project uses PIC16F876A microcontroller with built-in ADC (Analog to Digital Converter) and 1 6x 1 backlighted LCD display. Circuit design uses very few components and may be mounted on a small PCB.
This item comes with the parts required to build Dual Channel 70V PIC Voltmeter except for PCB. Voltmeter can also measure AC voltage if rectifier diode is added to voltage input. This meter can both measure and be supplied by the same power source.
Dual Channel 70V PIC Voltmeter Schematic
Component List
1x 1 6x 1 LCD Display with Green Backlight
1x PIC16F876A - Pre-programed microcontroller
1x 4MHz Resonator
1x LM7805 5V Voltage Regulator
2x 100K 1% Metal Film Resistor
2x 6.8K 1% Metal Film Resistor
1x 7.5K Resistor
1x 10 Ohm Resistor
1x 100nF Ceramic Capacitor
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