Root 3 Proximity sensor holder for autosquaring gantry
thingiverse
Sensor holders for autosquaring gantry. I used 8mm NPN NO sensors and 1mm detection. For Mach3 the script for "Ref All Home" is: DoOEMButton (1024) DoOEMButton (1022) RefCombination (10) Always perfect gantry alignment at every homing. You need 2 sensors, one for Y and one on the Slave axis. On the board they must be connected on 2 different pins. I have connected on input 2 all the endstop together with home Y and on input 3 only the slave axis (A in my case).
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