Wilson

EPD_2IN13_V2_SendCommand(0x11); //data entry mode EPD_2IN13_V2_SendData(0x04); EPD_2IN13_V2_SendCommand(0x44); //set Ram-X address start/end position EPD_2IN13_V2_SendData(0x0f); EPD_2IN13_V2_SendData(0x00); EPD_2IN13_V2_SendCommand(0x45); //set Ram-Y address start/end position EPD_2IN13_V2_SendData(0xF9); //0xF9-->(249+1)=250 EPD_2IN13_V2_SendData(0x00); EPD_2IN13_V2_SendData(0x00); EPD_2IN13_V2_SendData(0x00); EPD_2IN13_V2_SendCommand(0x4E); // set RAM x address...

This header file should already be included in the project and is shipped with the IDE by default. Please add the detailed error information.

seem to be GPL

Hi @unster, I tested it with RPi Zero and it worked. I suggest you contact our after-sales staff for a better analysis.

Update 7.5inch_e_Paper_HAT(B) instead of 7.5inch_HD_e_Paper__HAT(B). look here: [7.5inch e-Paper(B)](https://www.waveshare.com/wiki/7.5inch_e-Paper_HAT_(B)) The code: [7in5b_V2](https://github.com/waveshare/e-Paper/blob/master/RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd7in5b_V2.py)

Hi, I'm not sure what you mean. Please describe your problem in detail. 7.5b_V2 Code is support version V2 and V3.

Some EPD use the same IC, So the driver is more similar. This is available: [2in13_V3](https://github.com/waveshare/e-Paper/tree/master/Arduino/epd2in13_V3)

Mostly code has update. if not work please cut down reset() RST low level delay time.

@denisjoshua Hello, I'm sorry to tell you that there is no partial refresh on the three-color screen.

You didn't do anything wrong. I have no problem testing the program.(E-Paper_Shield)