Hello, i'm trying to wire my heatbed to RAMPS 1.4 to D8 port, but i have problem. That heatbed heats all the time, if i turn off heating, heatbed heats, if i turn on heating, heatbed still heats. Anyone know how to fix it?
thanks
Printable View
Hello, i'm trying to wire my heatbed to RAMPS 1.4 to D8 port, but i have problem. That heatbed heats all the time, if i turn off heating, heatbed heats, if i turn on heating, heatbed still heats. Anyone know how to fix it?
thanks
I could think of a few possibilities: Software problem: somehow your command does not reach the printer (try another program to make sure). Hardware: this is most likely. Your cable connection (USB) doesn't work properly. Try another cable. It could also be a RAMPS problem; mosfet could be bad. Could also be related to your firmware you have in the arduino.Quote:
Originally Posted by BikeRide
To be more specific you'll need to come up with more info. I wish you luck!
Check mosfet Q3 to see if it is OK