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bryanzd

No Response to Commands UMO+

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Hey guys, I have an UMO+, I've had it for about a year. A couple months ago I started having a problem where the machine doesn't respond to any commands, whether from USB, SD, or manually from the controller. I have replaced the motherboard twice, have the same problem across three boards. No heat from the bed or nozzle, no response from steppers. I'm thinking it has to be a software issue at this point? Any ideas? Thanks in advance.

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Update

I hooked up a voltage meter to see whats going on with the boards. On both new boards, I have 24v entering the board.

0v at heater cartridge when heating is initiated

0v at bed heater when heating is initiated

12v at fan when turned on, fan works

5v at ulticontroller

does this information help???

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Your k1 is broken. I just shorted mine out. Try wacking it. Here's a video that shows you how to get it to close if yours is like mine.

One of the founders of UM told me I could just short it out because it isn't used - it was meant for a safety thing but never implemented.

 

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Your k1 is broken. I just shorted mine out.  Try wacking it.  Here's a video that shows you how to get it to close if yours is like mine.

One of the founders of UM told me I could just short it out because it isn't used - it was meant for a safety thing but never implemented.

 

Doesn't seem to work for mine, is there a certain spot I should tap on the board? Also I see you are using a UM2, mine is an UMO+...

 

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Hey everyone, PROBLEM SOLVED, and it was really simple. The board that came with my machine had two little black plastic plugs in the safety1 and safety2 ports...the new replacement boards did not have these. I moved them to the new board, and it works. Huge thanks to Joseph at Fbrc8 for the fix.

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