I'm stumped, so I'm now asking for help. This happened randomly on Saturday.

3D Printing
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1

I’m stumped, so I’m now asking for help. This happened randomly on Saturday. I discovered one of my Migbots air printing. It is now not homing Z. The SN04-N sensor is constantly triggered, although it was working perfectly before. Wiring has been checked multiple times. The Sensor and board have been swapped for known working. I’ve rolled back firmware from Marlin RC7 to RC6, same issue.

I can’t take a multimeter to it at the moment as that’s at work, the sensor is not voltage divided though, as this is how the Migbots come stock with the sensor and they work fine. Frankly I’m stumped, help?

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It’s not unlikely that the sensor is simply broken–a similar thing happened to a Simple that I was working on and a new sensor did the trick. Do test with a multimeter before you grab another one though

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@Ishaan_Gov - aye, was a combination of board and sensor. Reverted back to the original and found it had a dodgy wire, so chopped it and soldered in new.