This PIC Volt Ampere Meter was designed to measure output voltage of 0-70V or 0-500V with 100mV resolution and 0-10A or more current with 10mA resolution.
It is a perfect addition to any DIY laboratory power supply, battery chargers and other electronic projects where voltage and current consumption must be monitored.
Thanks to added calibration via SETUP, UP & DOWN buttons it is now possible to calibrate the meter to measure voltage that is higher than 70V and current that is greater than 10A.
Components List
- 1x PIC16F876A – Programmed microcontroller
- 1x 2×16 LCD with Green Backlight
- 1x High quality PCB with red solder mask and plated through holes
- 1x 4MHz Resonator
- 1x LM7805 5V Voltage Regulator
- 1x 16×1 Gold Plated Female Header (PCB)
- 1x 16×1 Gold Plated Male Header (LCD)
- 1x 4×1 Gold Plated Male Header (LCD)
- 1x 100nF Ceramic Capacitor
- 1x 10K LCD Contrast Trimmer Potentiometer
- 1x 4x10K Network Resistor
- 2x 100K 1% Metal Film Resistor (brown, orange, black, black, brown)
- 2x 6.8K 1% Metal Film Resistor (blue, gray, black, brown, brown)
- 1x 10 Ohm 1% Metal Film Resistor
- 1x 0. 47 Ohm / 5W Power Resistor
Technical Specifications
- Voltage Supply: 6V – 30V
- Current Consumption: ~ 100mA with LCD backlight
- Voltage Input: 0-70V (or more)
- Voltage Resolution: 100mV
- Current Input: 0-10A (or more)
- Current Resolution: 10mA
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