And the dimensions chart.

The Schematic here!

@mh-et-live Found a wonderful example for 1.54 e-paper with MH-esp32-devkit.

Use the code here:Github
Use the example : "GxEPD_SPI_TestExample"

And the wiring as:

@kelapuress so how do you connect the esp32 and stm32？ use which uart on esp32？

@bennuhp not use any mcu. Just Uart tool and computer.

@kelapuress Do you have try to connect the esp32 use uart-tool with at-command？

The logic level of ESP32 DevKit v1 is 3.3v.

@kelapuress

if you have the at~firmware in the esp32？

if you have the at~firmware in the esp32？

5V interface is very effective

And the dimensions chart.