C++
xreef/PCF8574_library
PCF8574 library. i2c digital expander for Arduino, Raspberry Pi Pico and rp2040 boards, esp32, SMT32 and ESP8266. Can read write digital values with only 2 wire. Very simple to use and encoder support.
★ 247
Stars
62 forks · 2 open issues
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Growth · stale
We stopped seeing this repository in its topic's top results, so its star count is frozen at the date it was last read. Subtracting from a frozen number would read as zero growth, which would be false, so no rate is shown.
6.9
Momentum / 100
see the breakdown below
8y ago
Created
last push 12mo ago
Star history
Only 1 snapshot so far — we started watching
this repository on 2026-10-27.
The chart appears once there are two days to compare.
How this score was built
| Component | Weight | Earned | Why |
|---|---|---|---|
| Velocity | 55 | 0.0 | — — no measurable rate |
| Acceleration | 15 | 0.0 | needs 7-day and 30-day rates side by side |
| Freshness | 15 | 0.0 | last push 12mo ago; decays to zero at 180 days |
| Scale | 15 | 6.9 | 247 stars, log-scaled against 150k — stops a 3-star repo topping the board |
| Momentum | 100 | 6.9 | capped at 35 because growth is unmeasured |
Detail
| Topics | arduinoarduino-librarydigitalencoderesp-01esp32esp8266expanderhc-sr04i2clibrarypcf8574rp2040stm32ultrasonic |
| Matched on | Mechatronics (stm32) |
| Short window | +0 stars over 9 days = 0.0/day |
| Long window | no snapshot 14–45 days old yet |
| Lifetime average | 0.08 stars/day over 3,279 days |
| First seen here | 2026-10-27 |
| Last read | 11d ago |