Sunhokey Prusa i4 BLTouch Setup Marlin 1.1.0 RC8 Firmware by Middleman

Last crawled date: 3 years, 1 month ago

This is the latest version of Marlin 1.1.0 RC8 modified for the Sunhokey Prusa i4 printer.
Instructions:
Install BLTouch as per instructions
Upload using the latest version of Arduino 1.6.13 > www.arduino.cc/downloads
Install FTDI USB drivers if needed for your controller board > http://www.ftdichip.com/Drivers/VCP.htm
Download firmware from above link and extract ZIP file into folder. Upload firmware to Prusa i4 using Arduino app. Run USB cable to printer with slicer ie. Simplify3D, MatterControl, Cura, Repetier etc.
In slicer terminal run:
M280 P0 S10 (to raise BLT pin)
M280 P0 S90 (to drop BLT pin)
M280 P0 S120 enters in test mode (up/down) Perform M402 to stop it.
If BLT enters error mode (blinking red) issue a M280 P0 S160 to shut alarm off.
Do a G28 - should probe center of bed twice, full speed and then slow speed.
Then do G1 Z0 - position won't be good so you need to correct Z-Offset.
Do M851 command, should return Z OFFSET
Move BED Y-25 & X -20 to put the nozzle where the BLTouch just probed.
Get a sheet of paper under nozzle, and do 0.1 steps, and level as you wish going down progressively, note the distance on your LCD screen.
Software Endstop in FW has been deactivated so that the Z can actually have negative values.
Once the nozzle is correct height for you, issue:
M851 Z-xx.xx where xx.xx is the distance you noted
Immediately issue M500 to store in EEPROM
Do a M851 or M501 you should see the value you entered for Z-Offset
Do a G28
Do a G29, it will probe 9 points on your bed.
Now you are ready to print with the BLTouch!
Join the Prusa i4 Facebook group: https://www.facebook.com/groups/573076312852368