Controller for the webasto thermotop C diesel coolant heater ECU (also applicable to the chinese knock offs) , a modified version of the Webastardo board originally designed by Simon Raffrey that runs on arduino IDE written code. It handles the various procedures for starting up, pid combustion manager to reach and maintain a set coolant temperature and shutting down sequence, as well as various safety, alarms, standby, information display and input via rotary encoder. At the moment is missing BLE functionality to use a phone app to control it remotely.