Tagged: esp01

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PCF8575 i2c 16 bit digital I/O expander

Library to use i2c pcf8575 IC with arduino and esp8266.

This IC can control (until 16) digital devices like button or led with 2 only pins.

Can read and write digital value with only 2 wire (perfect for ESP-01).

I try to simplify the use of this IC, with a minimal set of operation.