I've spent the past several weeks walking a new guy through the calibration of his delta printer in this thread: http://3dprintboard.com/showthread.p...e-serious-help

I would encourage reading through that entire thing, or at least the posts of mine.

I assume you're using Marlin firmware? I would highly encourage you to convert to Repetier Firmware.


The "MANUAL_Z_HOME_POS" should be the printable height of your printer, which is likely around 200mm. "Z_MIN_POS" should be set to 0.

A common error is that people use their Z-Probe as a Z_Min Endstop. It's not an endstop, it's a probe. This implies that all minimum endstop pullups are disabled. Under probing configuration you pull up z_min and set those pins as your "probe". The reason your printer wouldn't move down is because the min endstops were pulled up and were sending a high signal...so non existent endstops were telling the firmware that they were being hit.