Hi! I need to ask, because I fried 3 drivers, and I have to be very carefull with the others 3 I have (lucky of me xD). So:
-I flashed marlin without ramps conected to arduino. Then plugged ramps, drivers and lcd. Conected the power supply and nothing happened (I cheked that it was at 12V)
-Then i realized that I needed to flash marlin with ramps connected, so unplugged everything except ramps, and reflashed. Ok till here.
-When I connected with USB (only) computer recognized it, but when I started to add the drivers(disconecting the USB between each one), a “desconnected sound loop” started on the computer. After researching, I found that maybe the drivers where fried. So I tried again with the new ones, and thats it, now I can connect arduino with ramps and the 3 drivers all together, and the computer recognizes it (hurray!!)
And now im afraid of repeating the mess. My doubts are:
1-The drivers got fried because of the falsh without ramps? or maybe because I turned on the PSU without the motors connected? (im afraid of turning on the power with the good drivers installed)
2-Also, I want to adjust the voltage of the sttepers for avoiding more injuries before anything, Can I don this with ramps connected to the computer? I think I need to turn the psu on, but there we go to point one
3-And finaly, Im using Chinese A4988 drivers with Nema 17 motors (2,5A), if im not wrong, the correct Voltage would be 0,5V for each stteper??
Thnaks in advice, electronic part of the build is the hardest for me, and im so close to get it running
PS:Sorry for my english, i do my best.