Pi4J/pi4j-v1
DEPRECATED Java I/O library for Raspberry Pi (GPIO, I2C, SPI, UART) observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 0
- Release rhythm 8
- Longevity 100
Flags: archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5107
- days_rel: n/a
- days_push: 965
- n_releases_24m: 0
Adoption not part of the score
1281 stars · 437 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Pi4J v1 is a Java I/O library providing object-oriented access to Raspberry Pi hardware interfaces such as GPIO, I2C, SPI, PWM, and UART/serial. The repository is archived and deprecated; the project has moved to the rewritten Pi4J v2+ codebase.
Use cases
- control gpio pins from java on raspberry pi
- read i2c sensors with java
- communicate over spi from a java program
- blink an led with java on a raspberry pi
- use serial uart from java on raspberry pi
- maintain a legacy java app that uses pi4j v1
When to choose
- you must maintain an existing legacy application already written against the Pi4J 1.x API
- you are pinned to Java 8/11 and cannot migrate to Pi4J v2+
When to avoid
- you are starting a new Raspberry Pi Java project - use Pi4J v2+ instead
- you need support for newer Raspberry Pi models like the Pi 5 or modern JDKs
- you need ongoing bug fixes or community support
Facets
library · maturity abandoned
embedded sdk developer-tools embedded-systems hardware iot cross-platform jvm embedded raspberry-pi gpio i2c spi uart pwm deprecated single-board-computer hardware-io archived linux
10 sources
- readme: https://github.com/Pi4J/pi4j-v1 · fetched 2026-08-28 · 1fcce98d73ed
- homepage: http://www.pi4j.com · fetched 2026-08-29 · 407ce17a2645
- site_page: https://www.pi4j.com/about · fetched 2026-08-29 · c716eecfdc3b
- site_page: https://www.pi4j.com/about/history · fetched 2026-08-29 · 4697c834c4ce
- site_page: https://www.pi4j.com/about/info-v1 · fetched 2026-08-29 · 49eb31f50ecd
- site_page: https://www.pi4j.com/about/info-v2 · fetched 2026-08-29 · 49302d967de1
- site_page: https://www.pi4j.com/about/info-v3 · fetched 2026-08-29 · 9d2b7b719bdf
- site_page: https://www.pi4j.com/about/info-v4 · fetched 2026-08-29 · ad196672a8e2
- site_page: https://www.pi4j.com/about/release-notes · fetched 2026-08-29 · f671a02b389f
- site_page: https://www.pi4j.com/about/download · fetched 2026-08-29 · b5067076a615
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| Pi4J/pi4j-v1 | main | 10 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem