How to wire up the SKR E3 V2.0

In contrast to the V1.2 board, you can wire up the +5V from the SPI header along with the endstops, when using optical sensors (or any other sensor that requires power input). Although, it's always better using a separate Step-Down (Buck-) Converter (i.e. LM2596).

The servos for Lid and Wiper need to be wired to the Z-PROBE header. Hence, it's recommended using the optional Bigtreetech DCDC 5V add-on module for the +5V rail. In this case, you don't need the external LM2596 Buck Converter.

Keep in mind that this controller has the TMC2209 drivers soldered directly onto the board. Hence, the initialization of these drivers is different. All configurations, such as Vref and Microstepping, etc. are done by software. So, in order to initialize those values correctly, you have to - at least - set Mode to UART in the TMC settings for each stepper driver used.

For wiring up the display, please refer to the Using other Displays page.

Ressources:

Pin diagram Schematics