For those allowing the fan to run 100% of the time, the main issue is that the fan will fail sooner, the sensor will get dirty sooner (which will affect its function) and the noise generated by the fan may increase over time as it deteriorates mechanically. For me, these are all good reasons to ensure the fan is turned off when not needed. A simple GPIO line and a transistor can do that. The big issue I am having is the very limited space inside the case, and the fact I would like to include a temperature sensor. The ESP and the PM1006 both generate heat which skew the temperature measurements. The fan itself doesn’t do much with regards to temperature unless you put the sensor in the top section… but heat also rises so I am not sure that is the best place to put the sensor either. Has anyone found a good solution that doesn’t include a software error correction (don’t like this option as the delta is likely not fixed).
Pictures showing the source of heat in the Vindriktning:
Fan:
The sensor itself:
I forgot to take pictures that included the ESP but that too had a spot around 30C