Is my limit switch (End Stop) Fauty?

Hi,

I have a Y Axis Limit switch plugged into the Y Min PINS on the RAMPS 1.4 board, when I trip the switch manually it doesn't register when I run M119, however my other switched do.

Any suggestions?

Well, you could try disconnecting the "Y" end stop plug from the ramps board then just short the S and - pins together ( don't touch the + pin for gawds sake) - this is the same as what the switch does anyway. If it works on M119 then your problem is the switch. If it still does not register, then it may be the connection between the Ramps and the Arduino - try separating them then refitting. Also, check for continuity between the Ramps end stop pins and the Arduino.

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Waitaki 3D Printer

Quote
waitaki
Well, you could try disconnecting the "Y" end stop plug from the ramps board then just short the S and - pins together ( don't touch the + pin for gawds sake) - this is the same as what the switch does anyway. If it works on M119 then your problem is the switch. If it still does not register, then it may be the connection between the Ramps and the Arduino - try separating them then refitting. Also, check for continuity between the Ramps end stop pins and the Arduino.

Cheers. I tried your suggestion and a few others, but it turned out to be an issue with the RAMPS board. I just changed pin.h and set the X Max to the Y Min. All working now.

Cheers.

Might want to document or mark the input as bad, so you don't repeat this months from now....