I recent purchased a reprap prusa kit. I got it all assembled, and went to control the machine from my computer. When I plugged in the usb, the arduino does not connect and then the power supply cable and usb cable both start to get hot. voltage readings on my driver boards double to 1.1v from the calibrated .55v. Voltage coming into my power supply is normal and out of my power supply is normal. If i have the machine powered off, then the arduino connects fine. as soon as i plug in the power supply, the usb disconnects and then both wires start to get hot again. a double check of wires and everything seems in the right place.
i removed the RAMPS from the arduino board and loaded a basic "L-led light blink" sketch. It ran fine.
i then went ahead and removed all wires from my RAMPS board along with the driver boards so that all that was left was the two wires to the power supply and the jumpers. When I power on the arduino from the usb, the sketch runs fine and my computer connects. Also the "+" led by D10 blinks as well. When i plug on the power for the power supply, however, the "L" led on the arduino board continues to blink, but the "+" led stops and the computer disconnects. Again, at this point all that is connected is the RAMPS board with jumpers and two connections to the power supply(5A and 11A). i have also tried unattaching one of the two power lines with no affect.
I am running a RAMPS 1.4 and arduino mega 2560
I am at a loss as to what the problem is to even attempt a solution. Any help would be extremely appreciated. Thanks in advance
i removed the RAMPS from the arduino board and loaded a basic "L-led light blink" sketch. It ran fine.
i then went ahead and removed all wires from my RAMPS board along with the driver boards so that all that was left was the two wires to the power supply and the jumpers. When I power on the arduino from the usb, the sketch runs fine and my computer connects. Also the "+" led by D10 blinks as well. When i plug on the power for the power supply, however, the "L" led on the arduino board continues to blink, but the "+" led stops and the computer disconnects. Again, at this point all that is connected is the RAMPS board with jumpers and two connections to the power supply(5A and 11A). i have also tried unattaching one of the two power lines with no affect.
I am running a RAMPS 1.4 and arduino mega 2560
I am at a loss as to what the problem is to even attempt a solution. Any help would be extremely appreciated. Thanks in advance