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Add more pins to your Arduino/ESP8266 board using PCF8574T module

Imagine you build a project and then you just run out the pins. You need more pins for your project to drive something. In this video, we will learn to add more pins to our Arduino board using this module. I will demonstrate it with Arduino UNO and an EPS8266 board WEMOS. We also test the output by blinking LEDs and a relay then test the input of this expander module by reading input from a button and an infrared sensor. And we also try to use more than one module to a single Arduino board so we got 16 additional pins. Join this channel to support me or to get access to perks:    / @miliohm   Full Code and Library : https://miliohm.com/pcf8574-with-ardu...