- December 9, 2017 at 10:35 am #49324
I was successfully able to flash Marlin onto my Arduino Mega 2560 R3 with the Ramps board. However, now when I plug it in via USB it no longer recognizes it on what was previously COM3. Any ideas for what may have happened?December 10, 2017 at 6:59 am #49328
Your computer sees it as a new board, so it has a new com port. Check your device manager and you’ll see which one it is now.December 10, 2017 at 7:44 am #49329
After I successfully flashed it, I connected the 12v 5amp power supply to it. Now Windows won’t recognize it as being plugged in at all. Did I potentially fry the Arduino?December 10, 2017 at 8:02 am #49330
Update: I got tired of futzing around with it and ordered a miniRambo from the shop. If anyone would like a potentially broken Arduino and a (hopefully) still working Ramps board with drivers, let me know.December 16, 2017 at 8:51 pm #49617
BillParticipantAfter I successfully flashed it, I connected the 12v 5amp power supply to it. Now Windows won’t recognize it as being plugged in at all. Did I potentially fry the Arduino?
The 12V supply connects to the RAMPS, not to the Arduino. The Arduino only likes the USB power or a (9V maybe?) plug in supply. 12V will do nasty things…December 18, 2017 at 12:56 pm #49700
Sorry, I should have been more clear. I connected the 12v adapter to the RAMPS board and had a USB connected to the Arduino. Now none of my machines will recognize it as being plugged in. Though, I am getting power across the potentiometers, so maybe my RAMPS board is fine.
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