I use a separate power suppy. I built a circuit to switch on/off the heater using a temperature sensor, but I don't use it because the heater doesn't reach an excessively high temperature. So I leave the heater on all the time.
I use a separate power suppy. I built a circuit to switch on/off the heater using a temperature sensor, but I don't use it because the heater doesn't reach an excessively high temperature. So I leave the heater on all the time.