Question regarding UART communication with ESP32 dev board

[tomasAl]

I can't get UART communication working with ESP32 (https://wiki.banana-pi.org/BPI-Leaf-S3 clone of ESP32-S3-DevKitC-1) with MKS TMC2209 v2. Here is my wiring diagram:

I'm using following Adruino code (https://github.com/janelia-arduino/TMC2209/blob/main/examples/TestConnection/TestConnection.ino) to test connection.

At first step I want to establish communication between devices. but unfortunately no luck... :(

I have few questions:

• Is my wiring right?
• to get UART communication, should I solider something on driver board?
• to get UART communication, should I connect motor supply to Vm? If yes is there some minimum required voltage?

Thankyou for any ideas and suggestions.

[pranjalchanda08]

Solution: Please look at my reply at #9