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Youmile 2 pezzi PCF8575 IO Expander Board Module I2C a 16IO Module I/O Extension Shield Module 16 bit SMBus I/O Ports con cavo Dupont per Arduino UNO R3 : Amazon.it: Informatica
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PCF8574 i2c digital I/O expander: Arduino, esp8266 and esp32, basic I/O and interrupt – Part 1 – Renzo Mischianti
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