My electronics won't turn on or Connect!!!!

My arduino mega works fine when I connect it to to my computer through the USB, but whenever I attach the ramps 1.4 shield it will no longer turn on or connect.

Any idea why? It was working not even 10 minutes ago and not I cant get it to connect! I've tried unpluggin it and all that jazz.

Thanks,
Jeff

Might be worth it to mention that prior to this shutdown, my motor mounts were getting extremely hot!

please help me

your ramps is faulty, or you have a short, or your pololus are in backwards, or your enstops are wired across + and - or your fets are dead, or... and the list goes on...

Im guessing dead pololus or pololus in backwards... general diagnosis follows

NB always turn off and unplug power before making any changes.

1) remove ramps, does computer still talk to the mega?

no. you have killed the mega

2) yes, remove all modules, endstop cables, everything removable from the ramps and plug it into to mega. Can you still talk to the mega?

No, you have a short on your bare ramps, you need to find and fix this. (or replace ramps)

3) yes, slowly add thing back to your ramps, one at a time. I suggest thermistors, then endstops, then pololus

You now either have a full working board, or have identified what is killing it.

Edited 3 time(s). Last edit at 03/25/2014 03:26AM by Dust.