moves no more

Hoping someone here knows what I screwed up.

In mid homing of Z axis, I bumped the RAMPs/Mega board and Z just stopped. After that I couldn't get Pronterface or Arduino to connect to the board. When I plugged the USB cable in, no "happy sound" from my PC either, although the "on" light came on.
Next I took all the cables off and removed the RAMPS and tried to connect the Mega by itself; same thing. So, after a quick trip to MicroCenter, I have all re-assembled. Here's what works:

USB connects quickly
Arduino was able to upload firmware

Nozzle Heat
Nozzle temp sensor
Bed Heat
Bed temp sensor
Endstop switches

What doesn't work:

ANY motor

X - nope
Y - nope
Z - nope
Extruder - nope and nope

I would appreciate suggestions on what may be up and how to troubleshoot it.

Thanks!


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Weird... the only commonality is power but if you didn’t have 12v your hot ends wouldn’t work either

I still say power.... check that the pololus are getting +5v and +12v

I believe power is okay, I am using the 12v-Aux right next to the X axis driver module to run some fans which do work. Would there likely be something on the RAMPS blown? Seems odd that everything except the motors work.


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Okay, so it turns out that all four Pololus were blown. I had a spare RAMPS and Pololus, and got nothing out of swapping out the RAMPS, but swapped out all the drivers and everything moves now.

Sure would like to know wtf I did to blow the Arduino and all the drivers

*sheesh*


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