PC fan control with ESP8266 – 3-pin or 4-pin PWM fans?
Posted: 26 Nov 2021, 07:42
I need to build a silencer box for a projector, which will have 4 PC fans (12V), same speed (parallel wiring?), so no individual control needed.
I assume they’ll need to run at full speed, but just in case: If I want to have the option to control the speed (based on the temperature inside the silencer) using an ESP8266 Wemos D1 mini and ESPEasy, which type of fans do I choose? 3-pin or 4-pin PWM? I mean can the PWM signal of those 12V fans be attached directly to the ESP8266? Or do I need e.g. L298N motor driver board anyway?
I assume they’ll need to run at full speed, but just in case: If I want to have the option to control the speed (based on the temperature inside the silencer) using an ESP8266 Wemos D1 mini and ESPEasy, which type of fans do I choose? 3-pin or 4-pin PWM? I mean can the PWM signal of those 12V fans be attached directly to the ESP8266? Or do I need e.g. L298N motor driver board anyway?