Quantity   Component name
1 × 16x2 or 20x4 LCD Display
1 × Adafruit INA219 Current Sensor Breakout Measure high side voltage and DC current draw over I2C. Be be sure to isntall the Adafruit library at https://github.com/adafruit/Adafruit_INA219.
1 × Adafruit Pro Trinket - 5V 16MHz
1 × Protoboard Any small board used for permanent soldering will work
50 × Male Header Pins
50 × Female Header Pins
50 × Generic Wire
1 × Adafruit Pro Trinket LiIon/LiPoly Backpack Add-On
1 × Lithium Ion Polymer Battery - 3.7v 1200mAh 1200mAh allows for approx 19-20 hours of power monitoring fun!
1 × Switch I sourced mine from a crappy RC helicopter remote.
1 × USB Micro-B Breakout Board http://www.adafruit.com/products/1833
1 × Breadboard-friendly 2.1mm DC barrel jack http://www.adafruit.com/products/373
1 × Male Micro USB cable (cut off with wires stripped)
1 × Male DC Barrel Jack cable (cut off with wires stripped)