Enhanced Heat bed options
Hello, I have a few requests for additional heat bed options.
1- Please add an option to invert the heat bed control pin. What I mean is that when the heater is on, the pin is pulled to ground instead of pulled high. This allows easily timing a pin directly to the PSON pin of an ATX power supply for powering the heat bed without having to use external relays/mosfets/SSR's.
2- I would like support added for dual-zone heat beds. For example on large format printers, we may implement an inner heating zone and an outer ring, each that could be controlled independently. Ideally, we would have the option to determine which zone to use (or both), and have the option of either a common thermistor or independent thermistors for each zone.