I've been looking at the mcodes for the marlin firmware and I am not finding a simple on/off code for the bed. All I find is 140 for setting the target temp and 190 to wait until bed reaches target temp. No simple on/off. Am I mistaken on this?by jobzombi - Firmware - mainstream and related support
Never mind. Still having issues. Made sure to provide power to the input terminal block. Still nothing. Changed those setting. Nothing. I pulled out my multimeter and tested the circuit to make sure nothing was wrong and it is good. I was a little concerned because the Ramps I have is second hand, and when I got it in, D8 was charred. I assume they tried to put something in there and the bloby jobzombi - Firmware - mainstream and related support
Turns out I'm just a big dumb dumb...While I did have to turn off the thermistor and set the default to 0 (current is 25 so it won't power the heat bed as a security feature) when I did so, it was still not working...because I need to supply power to the extra term 11V terminal into RAMPS. The PS is 16v+ rated so I should just be able to split power to both terminals. I'll give that a try, butby jobzombi - Firmware - mainstream and related support
I have a PCB heated bed that I want to attach to my printer. I have Ramps 1.4 and use Marlin. I already checked here, as well as other sites and did a general google search but have had no luck with my question. The board heats up max 100C and when wired directly to a power source it powers on fine. When I plug it to D8 of the terminal block and turn on the bed in Repetier, it does nothing. Iby jobzombi - Firmware - mainstream and related support