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hannoprint/Marlin-2.1.2.1/config/examples/Two Trees/Sapphire Plus/README.md

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+## Two Trees Sapphire Configurations
+
+This folder contains two default configurations for the Two Trees Sapphire Plus V2. The V2 has Dual Z Axis limit switches, and the V2.1 has a single Z limit switch, as well as a different board.
+
+## Supported Versions
+
+|Version|Board|Z-axis switches|
+|---|---|---|
+| V2|MKS Robin Nano V1.2|2|
+| V2.1| MKS Robin Nano V1.3|1|
+
+Make sure you always test the endstops/limit switches after using this configuration, as newer printers may have slight electrical and mechanical differences.
+
+#### Configuration differences on V2.1
+
+- Build with BOARD_MKS_ROBIN_NANO_V1_3_F4;
+- Disable ZMAX plug (Z increments lower the bed);
+- Enable INVERT_Z_DIR (Z increments lower the bed);
+- Disable PRINTCOUNTER (not supported with current settings);
+- Rotate TFT 180º;
+- Enable endstops always on;
+- Disable multiple Z endstops;
+
+## Available options
+
+By default the standard Marlin Touch UI will be used. Enable the `SAPPHIRE_PLUS_MKS_UI` option for the MKS UI.
+
+Enable the `SAPPHIRE_PLUS_BLTOUCH` option for BLTouch support.
+
+Enable the `SAPPHIRE_PLUS_TMC_UART` option for TMC UART support for the X, Y and E steppers. Note: you will need some hardware modification skills to modify the stepper sticks. A solder pad needs to be bridged to connect PDN to USART pin. Then a 1K resistor and wire is needed to connect the USART pin to the appropriate spare pin on MKS Robin Nano V1.2 board.