tmk7637 - VEB Robotron K7637 Replacement Controller and Firmware

Age	Commit message (Collapse)	Author	Files	Lines
2021-05-15	document how to build a solenoid driver and install a solenoid	Robin Haberkorn	1	-5/+2
	* In contrast to the relay breakout board I was using before, the solenoid driver is HIGH-active, so some code had to be changed as well.
2021-05-04	revised solenoid triggering: it behaves more like an IBM Beamspring solenoid now	Robin Haberkorn	1	-0/+3
	* It is deactivated after a short while, so the state of the solenoid does not correspond with the state of the key. * The MCU now less frequently crashes, but quite possibly we will need a separate power supply to use the solenoid.
2021-02-13	added the K7637 firmware	Robin Haberkorn	1	-0/+47