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.

• 6V 1W solar panel
• Lipoly charger
• Lithium poly battery

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.

• 6 x AA battery holder
• 9V holder with switch
• 9V battery clip