Controlling the 4-wire PWM fan cooler using ESP32 Cooler 4-Wire Fan Cooler DC 12V 0.2A Part number: D95263-001 Model number: F09A-12B7S2 Designed for use with Intel LGA775, LGA1155, LGA1150, and LGA1156 socket CPUs Board ESP32 DevKitC v4 Power 12V power supply DC-DC step-down converter LM2596 Schematics