Simple firmware for INA219 measurement unit with Arduino and LCD

• INA219 breakout, i2c
• 16x2 LCD, i2c
• 2 buttons
• controlled by attiny85

Uses PlatformIO as build platform.

Notes:

• Uses TinyWire as i2c implementation. There are modified libraries for INA219 and LCD communicatin included in the repository since they had to be modified in order to work with TinyWire.
• Attiny85 should be using 16Mhz internal oscillator
• More informatio can be found in a blog post, schematic is available on EasyEDA.

License

MIT, see LICENSE. This repository also contains modified copies and libraries (see lib directory) which have their own licences.