Ramps causing issue with computer.

Ramps causing issue with computer.

So to day I installed my ramps 1.4 into my laser cutter and everything works flawlessly except when I use my 8 ft USB. At the moment i have a 1 ft USB which connect to Pronterface, but when i try the 8ft i get this error.


So at this point I thought it was my arduino mega board, but after unplugging it from the ramps the board was able to connect to the computer no problem. To add i did remove the D1, because my laser runs off 24V.


Here a pic of my device manager


Thanks for the help!!!

Edited 1 time(s). Last edit at 12/05/2015 11:00PM by ipecacd.

What does the 5V rail show, when you feed the arduino through this loooong USB cable? I suspect to much voltage drop over the USB cable.
Since you already cut out D1, you could feed the arduino with a solid 5V source instead.
-Olaf

The long USB cable show 5.34v at the opp end. But my laser power supply has steady 5v supply, my multimeter show 5.22v off the laser power supply. I added a picture of how i have the power going into the ramps board.



Again thanks for the help!