Expansion Board External Stepper Motors
nickpm last edited by
Could anyone point me to the documentation for the Expansion Board for adding external motor drivers? I need to see what IC chips are being used on the board and how they're connected. The motor driver I want to use needs at least 4.5V for the hi signal for the logic level input and the Duet can only output 3.3V. However, I still want to use the Duex and was only going to take a few pins from the 50 pin connector. I can't do that if I use the expansion board so I need to know the connections made on that board to the IC chips in order to make my own.
Thomss last edited by Thomss
follow this link, it might help.
You can tap into the expansion bus if you clamp a third 50-way connector on to the ribbon cable. However, if you have a DueX5 connected then the firmware will assume that all the drivers connected to it are TMC2660 and will try to drive them accordingly.
If you use a DueX2 then you can drive 3 external stepper drivers using the unused motor signals on the expansion bus.
You can also connect 2 external stepper drivers to the CONN_LCD connector.