Guides

Practical notes for getting images onto e-paper displays.

• How to display an image on an ESP32 e-paper displayA step-by-step guide to turning a photo into a frame buffer and showing it on an SPI e-paper panel with an ESP32, from choosing the size to refreshing the screen.
• Atkinson dithering explainedWhat dithering is, how Atkinson error diffusion differs from Floyd–Steinberg, and why DitherInk uses a tuned Atkinson variant for color e-paper.
• E-paper color modes: black and white to 7 colorsCompare black and white, grayscale, 3-color, 4-color, 6-color and 7-color e-paper panels by palette, refresh time, buffer size and the kind of images they suit.
• How e-paper frame buffers are laid outBit order, row padding, two-plane color buffers, 4-bit color codes and rotation explained, so you can match DitherInk's output to your e-paper driver.
• Getting good photos on 6-color e-paperPractical tips for choosing, cropping and adjusting photos so they look their best on 6-color and 7-color e-paper photo frames.