Hello, I built an arduino/ramps/2130/p3 steel printer. I had it working, but I reconfigured it this morning, eliminating the glass (BuildTak sheet on heat bed) and converted it from an inductive sensor to a smaller IR sensor. I've wasted HOURS trying to get this to work as I assume it should.
I've gone through the calibration steps 100x: M851 Z0 to reset z offset, G28, G1 X95 Y95, M211 S0 to turn off software endstops, manually move tip down until paper just touches (stop detects at about 2mm, and I keep going). M851 Z-2.19 to store new offset, M500 to store to EEPROM and finally M211 S1 to enable end stops. If I then issue G29 for tramming, it going through my three points, but it doesn't go anywhere near low enough for the sensor to detect the bed. So what's the point if it stops at 0, instead 0 - 2.19? It can't be collecting any data w/o sensor feedback, so what does it think it's doing? Am I misunderstanding what the goal of G29 is?
Thanks.