Hi my first post here …
I stumbled upon Tom building the Dolly and decided to make one also. The build went well with no difficulties (extruder assembly is fiddly) and then came the setup
Arduino mega 2560 and RAMS 1.6 with full graphic smart display: having never tackled Marlin before it was a but scary but perserverance paid off and Dolly started to breathe.
Marlin version 1.1.9
Bed size 220 x 220
All was going well until i got to homing y axis wouldnt home…end stop would not activate but soon fixed that.
I am now completely stuck at auto bed levelling Im hoping that some kind soul can help me as i cannot get it to work.
Following the dolly build videos p5 and 6 and trying to set bilinear levelling i notice that the code Tom sets is different to what i see when setting grid max points
When i compile and run the extruder rises and travels to approx x170 y10 and performs levelling then fails
Can anyone assist me on this …i have spent 2 days trying to work this out
Code extract available…