Hi everybody I'm building my Tool Changer. I see on this forum severall posts about load/unload fails... Is that a reccurent issue ? I think that if it was possible you would have done it, but is that possible to solve this by tuning load/unload gcode ? I understand that when there is a load/unload fail, this is the panic... Some of you are waiting conditionnal g-code upgrade. In order to avoid the load/unload mess, would it be possible to : add a switch that detects the tool head wants/will catch a tool (whatever the tool number) - somewhere on Y axis, near the rear add a swtich on Tool head build a external (arduino like) electronic board which check if after the first switch activation, we get a unload/load sequence in the next 20 seconds for example (detected trhough the desactivation/activation of the 2nd switch). If not, the arduino board drives a Duet "hard reset" (through a relay ??). You lost your print but you don't lost your Tool Changer. First switch could be replaced by gcode saying to external board "I want to unload/load" through the Duet. Sorry if this is totally stupid. Thanks !