Micro:bit Wireless Voltmeter

You can measure the voltages between 0 and 16.5V with micro:bit.

  1. The voltmeter must be supplied with 5V USB power.
  2. Do not measure excessively high voltages. It can damage the micro:bit.
  3. If the voltmeter terminal is not connected, a random value will be output. (Input terminal is not in pull-up or pull-down state)
  4. Please use the Chrome browser if possible. It may not work in the in-app browser of social media (e.g. Facebook).
  5. It works on a PC or Android device that supports Bluetooth. Operation on Apple devices is not guaranteed.
  6. This app consumes a lot of CPU resources. Make sure your smart device’s CPU performance is good enough.
  7. Firmware installation is required on the micro:bit for first use. Click the ‘Firmware Download’ link to install it on your micro:bit. You don’t need to access ‘makecode.microbit.org’ since you just need to save the file to the microbit folder.Firmware Download
  8. If the connection to the micro:bit is successful, ‘v'(Volt) will be displayed on the micro:bit’s LED.
  9. If the connection doesn’t work, turn the micro:bit completely off and back on, or click the reset button on the back.

Parts list

The parts list is at the bottom of the link below.