VOSS - Versatile Open Source Sensor
Jeti EX Telemetry for AttoPilot Voltage and Current Sense Breakout - 45A, 90A, 180A https://www.sparkfun.com/products/10643
Reads voltage and current from AttoPilot sensor and calculates power and used energy.
Based on the brilliant JetiExSensor library written by Bernd Wokoeck