See: https://www.arduino.cc/en/Main/ArduinoBoardUno Overview This circuit revolves around the ACS758ECB-200B hall effect current sensor. The goal is to create a shield that will output the current profile, peak current and average current to be digitized by an Arduino. The project builds on work by Terry Fritz on Airsoft Mechanics forums. The Arduino will primarily sample the current profile via ADC and then measure the peak and average after an event trigger is detected. What will generate the event trigger is TBD, could be the comparator.