This is a fork of the Marlin 3d printer firmware (see https://github.com/MarlinFirmware/Marlin)
This fork includes some local changes:
The multi power-supply modification supports switching of multiple power supplies - for example to switch an extra power supply for a heated bed just when one needs the heated bed. This modification supports multiple PSUs via different I/O pins.
Normally it is controlled via three M-codes:
- M86 [n]: Switches the power supply [n] (numbering is done from A to Z) on
- M87 [n]: Switches the power supply [n] off
- M88 [n]: Returns the status for the power supply [n]
Additionally the extension can be configured to automatically switch a power supply whenever a bed temperature larger than zero is set and to disable the PSU again whenever bed temperature is set to zero again.