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SoliForum - 3D Printing Community → Hacks & Mods → Questions about installing heated bed
My prusa PCB Mk2 heated bed upgrade just arrived, and I have two questions:
The old sd3 bed has 2 pairs of wires going to it, 2 black, 2 red.
Do I solder both red to the + terminal on the PCB, and both black to the - terminal on the PCB?
I just want to be 100% sure before I start cutting wires.
Its very important to me that I can still have the temperature displayed in repetier-host. I assume it measures the resistance to measure the temperature?
The black wires go to the thermistor and the red wires go to the actual heating element.
So I installed it, and it heats up fabulously. The thermistor on the other hand, is not working so well. At first the LED came on and Repeteir host showed 3 degrees C. A few days later the LED does not come on and the temp is always recorded around 130C regardless of what temperature I set it to. Additionally it seems like as soon as I plug the power supply in, the bed starts heating up, even when its set to off in RH.
Any ideas? From what I have read, the thermistor shouldnt care if I solder + to - and vs versus. It concerns me that the LED is no longer on.
I want to hook up my new 30A PSU, but I am hesitant to provide it with more power until I can control the temp.
Did you update the thermistor type in configuration.h in the firmware ?
No I wasn't aware of that step.
Thanks!
SoliForum - 3D Printing Community → Hacks & Mods → Questions about installing heated bed
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