CrowPanel ESP32 4.2 E-paper SSD1638 Driver

[Lepeshka92]

I wanted to try a device with an e-ink display and bought a CrowPanel ESP32 4.2 E-paper. I did not find any micropython libraries to work with this device and wrote my own. Unfortunately, I could not figure out how to partially update the screen. It used an SSD1638 controller. I wrote my library based on the code from the examples for arduino. Has anyone worked with this device? I posted the code on https://github.com/Lepeshka92/micropython-crowpanel-4.2 . Device https://www.elecrow.com/media/wysiwyg/products/2024/DIE07300S/hardware_overview_of_4.2_inch_ESP32_HMI_E-paper_Display.png

[peterhinch]

No - the 400x300 panels for which I've written drivers use the UC8176.

In general partial updates produce poor results, the one exception I've found is the Waveshare Pi Pico which I've run for long periods (weeks) doing partial updates only. Ghosting was absolutely minimal. If partial updates are central to your needs you'd probably save a lot of time getting one of those and using the nano-gui driver.