You can also set the thershold temperature at which fan runs at lowest speed. If the measured temperature is 3°C greater than the threshold temperature, the fan will run at 100%.
Add the compile-time option `-D USERMOD_PWM_FAN` to your `platformio.ini` (or `platformio_override.ini`) or use `#define USERMOD_PWM_FAN` in `myconfig.h`.
You will also need `-D USERMOD_DALLASTEMPERATURE`.
### Define Your Options
All of the parameters are configured during run-time using Usermods settings page.
e.g. you can use `{"PWM-fan":{"speed":30,"lock":true}}` to lock fan speed to 30 percent of maximum. (replace 30 with an arbitrary value between 0 and 100)
If you include `speed` property you can set fan speed as a percentage (%) of maximum speed.
If you include `lock` property you can lock (_true_) or unlock (_false_) the fan speed.
If the fan speed is unlocked, it will revert to temperature controlled speed on the next update cycle. Once fan speed is locked it will remain so until it is unlocked by the next API call.
