Most starred PCF8574 library for Arduino (standard and SAMD), Raspberry Pi Pico and rp2040 boards, ESP8266, smt32 and esp32. Now with HC-SR04 ultrasonic sensor support!
Most starred PCF8574 library. i2c digital expander for Arduino (standard and SAMD), esp32, Raspberry Pi Pico and rp2040 boards, SMT32 and ESP8266. Can read write digital values with only 2 wire. Very simple to use with encoder and ultrasonic sensor (HC-SR04) support.
| Filename | Release Date | File Size |
|---|---|---|
| PCF8574_library-2.4.0.zip | 2025-11-05 | 25.23 MiB |
| PCF8574_library-2.3.7.zip | 2024-02-01 | 24.38 MiB |
| PCF8574_library-2.3.6.zip | 2023-07-11 | 24.38 MiB |
| PCF8574_library-2.3.5.zip | 2023-02-16 | 24.38 MiB |
| PCF8574_library-2.3.4.zip | 24.38 MiB | |
| PCF8574_library-2.3.3.zip | 2022-07-28 | 24.38 MiB |
| PCF8574_library-2.3.2.zip | 2022-07-28 | 24.38 MiB |
| PCF8574_library-2.3.1.zip | 2022-04-27 | 24.38 MiB |
| PCF8574_library-2.3.0.zip | 2022-04-07 | 24.38 MiB |
| PCF8574_library-2.2.4.zip | 2022-03-09 | 25.33 MiB |