I get readings from the sensor, but cannot seem to get the set pin working as expected.
Leaving the pin floating, I get data from the sensor (and it reacts if I light a match next to the sensor), but the fan does not work. Pulling the pin to VCC turns off the measurements, fan not running, and pulling the pin to GND keeps on measurements, and fan is not working. So what is it that I do not get right? The fan should be turning to push air through the sensor?