Auto bed levelling.

[Pader]

Hello Folks,
I have just bought a controller board and display second hand from ebay. It is listed as 'Geeetech i3 pro b lcd control panel&gt2560 control board'.

I read somewhere in my various searches for Geeetech boards that from revision A, the board had provision built in for automatic bed levelling. I am guessing that the I3 Pro B is revision 'B'.

I cannot find a circuit diagram that indicates where the auto bed levelling is connected but notice that on the board there are three unshrouded pins adjacent to the thermistor inputs that is not shown on the circuit diagrams I have seen. Is this the connection for the bed leveller?

If this is so, perhaps someone can give me an indication of how the three pins are designated.

[antinnel]

http://www.geeetech.com/blog/2016/09/ho ... -prusa-i3/

[antinnel]

seems to be an empty forum nobody help here