Waveshare e-paper driver hat v.2.2 - different wiring

lmarzen / esp32-weather-epd

A low-power E-Paper weather display powered by an ESP32 microcontroller. Utilizes the OpenWeatherMap API.

GNU General Public License v3.0

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Waveshare e-paper driver hat v.2.2 - different wiring #71

Closed martinriegel closed 6 months ago

martinriegel commented 6 months ago

Hi. I got a Waveshare e-paper driver hat v.2.2 with my 7.5 e-paper hat (B) display.

I had to wire the VCC to the 3V3 pin on the ESP to get the display up and running. So maybe add that as an example to the wiring guide. bilde

PaekHyun commented 6 months ago

i think you can change display config. how about display config change to "A"

lmarzen commented 6 months ago

@martinriegel Thanks for sharing I may add this.

@PaekHyun You can, and it may work however, you may lose some contrast or notice some graininess/noise, especially around the border.

Additionally, waveshare (waveshare-driver-hat) and good-display (despi-c02) indicate that the displays used by this project should be set to .47R (B). I saw some artifacting myself when setting it to 3R (A) so I wouldn't recommend this.