The library gives easy control over the 16 pins of the PCF8575 chips. Base address = 0x20 + 0..7 depending on address pins A0..A2. PCF8575C 0x20 to 0x27 need pull up in input mode. See #36, to be ...
📖 For a complete, working example** with platform auto-detection (ESP32, Nano R4, Arduino), smooth non-blocking PWM, and proper error handling, see TLA2528 ...
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