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tmc2209 compatible with BTT SKR 1.4

Posted by Vuokko 
tmc2209 compatible with BTT SKR 1.4
February 04, 2021 05:23PM
I know that I should just remove the diag pin to get end stop working. I just hate the idea.

As end stop is triggered, the signal pin is connected to ground. Now I'm thinking designing same kind of stepper driver module as BTT has done, but the diag pin would be open drain or collector. Quite an easy design change.

Would I get head crash detection, Z probe and limit switch on my Z-axis if I designed that kind of module? I'll be using reprap firmware.
Electrically that would be trigger = NOT (diag AND probe AND limit) as any device can pull down it then.

Is this a stupid idea?
Re: tmc2209 compatible with BTT SKR 1.4
February 04, 2021 07:11PM
over kill, they just need to add jumpers back on like they had in skr 1.3
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