Mar 29, 2015

How to use inductive distance sensor and Mk3 aluminum hotbed for automatic bed leveling

3D Proto, creator of dual parking extruder, made an excellent video about how to install and use inductive distance sensor with Mk3 aluminum hot bed. This combination enables you to reach much better quality of ABS prints. With inductive distance sensor bed leveling you can:
  • Save lot of time by not having to have to mess with springs and screws on your print bed. Run the auto leveling routine before every print or just one time for each start-up of the printer.
  • Less issues related to non level print beds like parts coming up on one corner and nozzles jamming because the print started too close.
Inductive distance sensors are very cheap so it makes me wonder why are they not used by more 3d printers for automatic bed leveling?
If you wont to see full guide on how to install and use it with Marlin go to:

Inductive distance sensor on the extruder paired to Marlin firmware constantly corrects the distance to print surface

Diagram showing how to connect inductive distance sensor to control unit ie. Ramps

Combined with Mk3 Alu heated bed gives much better ABS prints like in this example where you can see very strait walls

Here is the video guide:


Here is a detailed guide by Tech2C YT channel on inductive sensor probes and various settings with measurements with multi-meter: