Daid of Ultimaker Team once wrote a MarlinSimulator https://github.com/Ultimaker/Ultimaker2Marlin/tree/master/MarlinSimulator But I never managed to run it. Windows seems problematic setting up the dev env. Mac too. Seems to be built for Linux but I do not have a desktop Linux machine to get it going...
@Alex9779 I am running your Rcbugfix_Hybrid_Titan_Mirrored_Mbl firmware after converting my Dual to a Hybrid with Titans. The homing works well as does the bed leveling but when I try to dock the head to (G1 X110 Y235) it bounces along the back of the frame. I then tried simple commands of G1 X100 and what I saw was the head moved to about X140 then immediately to X100. It looks as though it is moving based on the left hand extruder then correcting itself to the right hand one. Have you come across this before? Edit: Strange. It appears that it is actually moving double the distance in the direction it was travelling in.
@Paul Seccombe RCBugFix is not usable at the moment... Wasn't for about two weeks (?), I tried several times, updated to latest RCBugFix today and discovered a change in MBL definition which will make our lives very hard if that will get in next RC or GM so I commented on that issue... Gotta wait for results...
@Paul Seccombe you gotta stick with RC for the moment, I updated it just now, firmwares are compiling on my build server just now finished soon, with a fix from RCBugFix picked I think is very important. This version should work without the issues you describe...
Thanks @Alex9779. The RC appears to be working without issues. Printing a traffic cone to check my offset values. I will upload my modified Titan carriage tonight which gives a few extra mm to get the full 300 on X.
