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KlausMu / esp32-fan-controller

ESP32 fan controller with temperature sensor and MQTT
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No level shifter? #10

Closed vekexasia closed 2 years ago

vekexasia commented 2 years ago

I see there is no level shifter from 3.3 to 5v for the PWM line. I thought pwm needed to run 5v minimum?

KlausMu commented 2 years ago

I used three different fans, level shifter was not needed. Please see Wiki, "5V for fan pwm and tacho vs. 3.3V for ESP32" at the bottom.