BigTreeTech TMC2208 2.0 UART Mod for SKR 1.3 1.4 Pro TMC Connection Error

5 years ago
15

I was upgrading my old printrbot with a SKR 1.3 board and was having problem getting UART to work. All the doumentation online was wrong. I looked the schematics for the TMC2208 and the SKR 1.3 board and UART was going to the NC pin on the TMC2208 driver. All the current mods online send UART back to the PDU pin. The SKR boards want UART on the NC pin. A few hours research and some solder got my drivers working in UART mode.

SKR 1.3 Board
https://www.amazon.com/gp/product/B07P87J274/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07P87J274&linkId=0c324ae967d81872d14d33d514e9480c

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