Thanks, that makes much more sense now.
So I can see that the mosfet I suggested would be ok for low current devices, but not for switching a heatbed, and the gate series resistor explains the SevenSwitch design (I was confusing the gate threshold voltage with the max gate voltage, which is why I thought a voltage divider was needed).
Now I can build the circuit, AND understand it. (:P)
So I can see that the mosfet I suggested would be ok for low current devices, but not for switching a heatbed, and the gate series resistor explains the SevenSwitch design (I was confusing the gate threshold voltage with the max gate voltage, which is why I thought a voltage divider was needed).
Now I can build the circuit, AND understand it. (:P)