Description
Panel Volt Meter
Simply connect the red wire to the positive supply, and black to negative ground. The display has a microcontroller that will read the voltage, compare it to a stable reference and display the voltage with 0.1V precision on a 3-digit 0.56″ tall 7-segment display. It works from 4.5V up to 30V and is reverse-polarity protected so it will be good for nearly any electronic project! The meter draws 3-4mA to power the microcontroller and display. This particular LED display is a nice vivid green, which we found very readable. To mount to your enclosure, simply cut a 45.5mm × 26.5mm rectangle and snap it in.
Technical Details
Dimensions:
- Dimensions: 48x29x21mm
- Panel cutout: 45.5mm x 26.5mm
- Digit size: 14mm/0.56″ high, green LEDs
- Refresh rate: about 2 Hz
Power specifications:
- 4.5V to 30V DC measurements
- 0.1V precision
- 10-15mA draw
- Green LED display
- Reverse polarity protected
Revision History:
- As of April 20, 2022 – This version has changed PCB design due to parts shortages. However, it should act identically as before.
- Datasheet