TEVO TARANTULA E3DV6 WITH AUTO LEVELLING PROBE

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Auto Bed Levelling for the TEVO TARANTULA with the popular LJ12A3-4-Z/BX-5V from eBay. Print with the large flat section facing down on the bed. No more servos, no more touch probes! I designed this carriage as I was tired of having to level the bed almost every print. It uses 3 rollers instead of the standard 4. The carriage sits nice and square now, and you only have one eccentric nut to worry about - it's heaps easier. I've also included a small recess for the X limit switch bolt heads so that they no longer drag along the X axis. I used the proximity sensor with the part number listed above, but the standard one that works from 6-30 volts will also fit in this carriage. You'll need to use a voltage divider before wiring it up - there are plenty of videos on YouTube if you don't know how to make a voltage divider. The firmware attached in the .zip file is the Marlin firmware I'm currently using in my Tevo. There have been some notes added through the 'Configuration.h' file regarding the settings I've changed, so be sure to check those and adjust them as needed for your printer. The big one will be the Z probe height - it's currently set at 4mm, so if you set the nozzle against the bed and have the probe 4mm above the nozzle, you should be good to go. However, I've actually set my nozzle .5mm above the nozzle so that it can probe through 3mm glass when printing ABS. There's a note in the Configuration.h file pointing out the correct height setting to change - make sure you double-check it before going live with this awesome bed level mode, because you'll probably crash and that sucks! Once the firmware is uploaded, you can either select Bed Levelling through the menu on the LCD screen before your print or alter your slicer settings to include these two lines at the start of your print: "G28 X0 Y0" (home x & y axis) "G29" (perform bed mesh levelling before the print) As always, this is open-source firmware, and I take no credit for its development. If something explodes because you uploaded it, don't come crying to me! This firmware is exactly what I'm currently using, and my printer was built off ArcadEd's walkthrough - if you followed that, you should be good! Drop us a buck if you like it, and don't forget to put up the "I MADE ONE" photos. Enjoy!