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Jeremie Francois developed his own method of automatic print bed leveling and calibration by using some force sensors, Arduino to communicate with modified Marlin firmware and three Z-axis lead screws.Here are videos of his set-up in action:
Project homepage with detailed guide:
http://www.tridimake.com/2015/12/tribed-fully-automatic-bed-leveling-and-z-offset-adjustment.html
The project is still in development and further improvements are expected.
Source:
http://hackaday.com/2016/01/31/tribed-3d-printer-configuration-doesnt-ever-need-to-be-leveled/
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| FSR sensor on the bottom plate next to a Z screw |
You can learn more about Force Sensing Resistors here:
https://en.wikipedia.org/wiki/Force-sensing_resistor
