Bigtreetech skr board
Use the AUX1 or TFT connector

| Board pins voltage | 3.3v |
| Board firmware | Marlin |
| Board configuration note | Enable second serial port in the marlin configuration file |
| ESP3D configuration note | Raw serial, no SD |
Use the AUX1 or TFT connector

| Board pins voltage | 3.3v |
| Board firmware | Marlin |
| Board configuration note | Enable second serial port in the marlin configuration file |
| ESP3D configuration note | Raw serial, no SD |