OpenEVSE is an Arduino-based charging station created by Christopher Howell and Sam C. Lin.[1] The charger is composed of open-source software[2] and hardware which can be made by individuals.[3]
The project started in February 2011[4][1] with an experiment to try to generate the SAE J1772 pilot signal[5] on an Arduino-compatible ATmega328 8-Bit AVR MCU. One experiment led to another until a prototype J1772-compatible controller was born. Today, OpenEVSE powers charging stations from many manufacturers all over the world.[6]