Re: HEQ-5 conversion with OnStepX, FYSETC E4 and Nina

Howard Dutton

I examined it and It has significant drawbacks.

From what I recall the stepper drivers sockets have no mode switching at all not even SPI.

It uses 3x 74HC595 SSR's (to make 24 output pins from 3 MCU pins) which X does in theory support.  I think it would work and if you use TMC2209's and jumper lead the serial interfaces could be ok.

Seems like a lot of hassle though.

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