# ZinggJM/GxEPD2

Arduino Display Library for SPI E-Paper Displays

Repository: https://github.com/ZinggJM/GxEPD2
Canonical: https://ross.abutalabs.com/products/gxepd2
Language: C
License: GPL-3.0
License Family: copyleft
Topics: e-paper, arduino
Last push: 2026-04-19T15:27:21+00:00

## Health v2 (maintenance only)
Score: 79/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 78, release rhythm 68, longevity 100
- inputs: {"age_days": 3042, "days_push": 136, "days_rel": 136, "gap_med": 39.5, "n_releases_24m": 11}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1471, forks 306 (observed 2026-08-28T04:04:49.322335+00:00)

## What it is
An Arduino library for driving SPI e-paper (e-ink) displays from Good Display and Waveshare, built on Adafruit_GFX for graphics and text. It supports paged drawing to limit RAM usage as well as full screen buffer and low-level bitmap drawing.

## Use cases
- drive an e-paper display from an ESP32 or Arduino
- show text and graphics on a Waveshare e-ink panel
- render images on a Good Display e-paper module with limited RAM
- build a low-power e-ink weather or status display
- update e-paper screens using paged drawing to save memory

## When to choose
- you use an Arduino-compatible microcontroller with a supported SPI e-paper panel
- you need Adafruit_GFX-compatible drawing on e-ink hardware
- RAM constraints require paged/picture-loop rendering

## When to avoid
- your display uses I2C or parallel interfaces rather than SPI
- you target non-Arduino platforms without the Arduino ecosystem
- you need fast full-color display refresh

## Facets
- artifact type: library
- maturity: active
- function: graphics, embedded
- domain: embedded-systems, hardware, graphics
- platform: embedded, iot, cpp
- tags: e-paper, arduino, spi, eink, adafruit-gfx, display-driver

## Member repositories
- ZinggJM/GxEPD2 (main) score 79

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:49.322335+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:34:45.313601+00:00, confidence not recorded.
  - readme: https://github.com/ZinggJM/GxEPD2 (fetched 2026-08-28T04:04:49.322335+00:00, sha 44904368a0aa)
- Data as of 2026-08-30T08:39:29.467469+00:00.