I just finished my first MPCNC build and am having trouble with testing it via manual control in Repetier-Host. When I plug my board into the wall and my computer, I have no trouble connecting. However, when I click a manual control option, nothing happens. My baud rate is set to 250000 and I have the latest firmware flashed (I think.) I don’t see any errors in the log, but occasionally commands appear to ‘stack up’ and I will have several commands waiting.
I did not buy anything apart from my wiring harness from here. I printed my parts myself and ordered electronics from Amazon and other sources.
P.S. I’m a complete CNC newbie, so please fully explain any suggestions.
Repetier-Host showing 170 degrees. I plugged in my LCD, and when I move the machine with Host, the movement registers on the LCD but the machine doesn’t move. Could it be a power problem?
Yep. The motors get power from the 12V, the arduino gets power either from the 12V to 5V regulator or the USB. So if you disconnect the USB, does the arduino and LCD stay on?
Alternatively, it could be something wrong with the drivers, or something wrong with your motor wiring. Are there any noises when you try to move them?
I had an issue with a cheap Amazon power supply. It was rated at 12 VDC 6A, but barfed any time I tried to pull more than about 2A. Double check that your supply can actually supply.
Maybe not. If the 12V was plugged into a dead outlet, then the Arduino and LCD were getting power from the computer, but the motors weren’t. If the outlet wasn’t dead, but it somehow couldn’t handle the 0.5A the power supply uses, then… Yeah, worrisome.