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DC SSR to Replace Heated Bed Circuit?

Posted by gmckee 
DC SSR to Replace Heated Bed Circuit?
July 14, 2016 02:26PM
I've had my printer for over a year and the other day thermal runaway tripped on the heated bed. I took a look around and saw my connector had melted down (Picture).

Is it possible to alter pins.h of Marlin to use a spare pin that to trigger a DC SSR with a heatsink (Link) connected to a typical PCB heater? Or would it be better to replace the whole ramps board?

Thanks in Advance


Prusa i3 Rework - Ramps 1.4 - E3d Lite6 - Full Graphic LCD Controller
VDX
Re: DC SSR to Replace Heated Bed Circuit?
July 14, 2016 03:12PM
... yes, you can change pin definition -- look into the file "pins.h"

I've driven one of my heated beds with an AC-SSR and power from a 12V transformer (what gives rougly 16VAC) without problems ...


Viktor
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