ESPRadiator
A radiator fan controller for Home Assistant — for more: home, github, portfolio or email.
Home Assistant
Available entities include manual on/off, engine coolant temperature, ignition and A/C clutch status, and fan speed
Front
15A and 2A fuses, ESP32 DevKit v1, 3.3V switching regulator, dual IRLZ44N MOSFETs, power input, fan output, and Ignition (yellow), A/C clutch (blue) and ECT (white) inputs
Rear
Not much to see here, folks. Voltage divider circuit with a P-channel MOSFET for minimal quiescent current
