Closed NiceCircuits closed 10 years ago
In Marlin:
support both high and low active level
Solid state relay should be ok (i.e. SSR-25). They costs couple of bucks and are need typically 3-30VDC and op to 30mA control. Easy to connect, screw terminals for input and output.
http://www.tridimake.com/2012/11/auto-shutoff-at-end-of-print.html