richardhawthorn / Watch1

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Description

An Arduino multimeter watch

Multimeter functions

  • Displays voltage between 0 and 30v
  • Displays current upto 500mA
  • Zener clamp and 500mA PTC to protect Arduino

Features

  • ATMEGA328P with Arduino boot-loader
  • 3.3V operation with CR2032 battery
  • 32.768kHz crystal
  • Mini 7 segment display
  • 2x side buttons for menu operation
  • FTDI programming port
  • Low power operation

Bootloader

You will need to set various fuses when you upload the bootloader, thse can be done with this command

avrdude -b 19200 -c usbtiny -p m328p -v -e -U lfuse:w:0xe2:m -U hfuse:w:0xda:m -U efuse:w:0x07:m

License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Creative Commons License
Designed by Richard Hawthorn
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