I've got a reprapdiscount ramps 1.4 (the white one with the white stepper drivers) connected to an arduino Mega 2560rev3. I've got D2 diode installed. Power supply is a good steady 12.1v attached to both the 5A and 11A inputs.
I have a very similar RAMPS 1.4 system running great on a Rostock on the bench next to me. With this new board the wiring checks out and the Mega2560 works great with the RAMPS board attached and disconnected.
The problem I am experiencing is whenever I plug in any stepper driver. If I power it the RAMPS up with no stepper drivers attached it connects via USB perfectly fine and the board has no problems. (With the exception that it has no stepper drivers installed and can't be used to print that way...) So I power it all down, plug in the stepper drivers, plug in power supply and the USB cable and it immediately knocks my PC win7 USB controller circuits completely offline and simultaneously the base of the arduino becomes almost immediately too hot to touch. I obviously don't leave it this way, but I am afraid that I'm frying stepper drivers like potato chips.
I unplug the power and USB cable, uninstall and re-install my Win7 USB controllers, remove the stepper drivers, plug everything back in and the arduino/ramps comes back to life. It's just that I can't connect any stepper drivers.
I've tried this will all of the stepper drivers individually, including stepper drivers of other brands, etc. No matter what stepper driver I attach, no matter which circuit I use X,Y,Z, E0,E1, the controller board does not work with stepper drivers plugged in.
Can this be fixed or should I just go for another RAMPS 1.4 board and call this one scrap?
I have a very similar RAMPS 1.4 system running great on a Rostock on the bench next to me. With this new board the wiring checks out and the Mega2560 works great with the RAMPS board attached and disconnected.
The problem I am experiencing is whenever I plug in any stepper driver. If I power it the RAMPS up with no stepper drivers attached it connects via USB perfectly fine and the board has no problems. (With the exception that it has no stepper drivers installed and can't be used to print that way...) So I power it all down, plug in the stepper drivers, plug in power supply and the USB cable and it immediately knocks my PC win7 USB controller circuits completely offline and simultaneously the base of the arduino becomes almost immediately too hot to touch. I obviously don't leave it this way, but I am afraid that I'm frying stepper drivers like potato chips.
I unplug the power and USB cable, uninstall and re-install my Win7 USB controllers, remove the stepper drivers, plug everything back in and the arduino/ramps comes back to life. It's just that I can't connect any stepper drivers.
I've tried this will all of the stepper drivers individually, including stepper drivers of other brands, etc. No matter what stepper driver I attach, no matter which circuit I use X,Y,Z, E0,E1, the controller board does not work with stepper drivers plugged in.
Can this be fixed or should I just go for another RAMPS 1.4 board and call this one scrap?