Robin Nano v1.2 TMC2225 UART help

General Discussion
1

Basic Information:

Printer Model:TwoTrees SP5
MCU / Printerboard:Robin Nano v1.2
Host / SBC MKS pi
klippy.log

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
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Describe your issue:

Hello, I am trying to enable uart on my 2225 drivers, and I need help understanding what pins and where to solder. Based on my research, I understand that I’ll need to bridge the uart pin on the 2225 driver, and then a jumper wire will need to be added to the board. I’ve read that the robin’s wifi pins are used, however the instructions seem to use a 2208/2209 instead of a 2225. Any help would be appreciated

2

Bridge = Bend??
As far as I can tell you’ll need to bend the pins on the driver OR cut traces on the board. You then need to connect a wire from each driver to an unused GPIO pin (you must know the pin ID).

I’ve attached instructions generated using Copilot. They seem accurate but are UNTESTED.

Proceed with caution.
Robin Nano v1.2 UART conversion.pdf (95.1 KB)