The Arduino, case and display:
- Adafruit Metro 328P (Arduino Uno Compatible)
- Enclosure for Arduino
- 16x2 LCD
- 0.1" header and potentiometer to go with the LCD, if you buy from the Adafruit shop they're included
- Datalogging shield or prototyping shield (we don't actually do any datalogging in this tutorial, so if you just want to view and not track, a protoshield will work just fine.)
- Premium female jumper wires (You can also just use plain wire, but we wanted to be able to detach the LCD with ease.)
The analog electronics!
- 3 x 10K resistors
- 1 x 47K resistor
- 1 x 15K resistors
- 1 x 1.0K resistor
- 3 x 3.5mm terminal blocks
- 0.1 ohm (current sense) resistor
- 8-pin DIP dual rail-to-rail input/output opamp (TS922 works well)
- 8-pin DIP socket for opamp
- 3 x mono 3.5mm phono jacks
- 3 x mono 3.5mm phono plugs
Then of course, the stuff to log. You can substitute other types of batteries & chargers.
If you want to take it outside you'll need a portable power source, we like AA's but you can also use a 9V if you're not going to be out long.