arduino › display module
good display 4.2" e-Paper 400x300 UC8176
Bigger than the 2.9 — full screen refresh ~4 seconds. Frame buffer is 15 KB so an UNO can't hold it; use ESP32, Feather M4, Pico, or stream from external SRAM.
Specifications
- interface
- spi
- resolution px
- 400x300
- controller chip
- uc8176
- voltage v
- 3v3
- touchscreen
- none
Sources
- Adafruit open product catalog · ingest 2026-05-06