Boian Mitov
Published © GPL3+

I2C Matrix Keypad With PCF8574/PCF8574A GPIO and Visuino

Connect Matrix Keyboard using only 2 Arduino pins by using PCF8574/PCF8574A I2C GPIO - Quick and Easy!

BeginnerFull instructions provided6 minutes8,477
I2C Matrix Keypad With PCF8574/PCF8574A GPIO and Visuino

Things used in this project

Hardware components

Arduino Nano R3
Arduino Nano R3
×1
Matrix Keypad(generic)
×1
PCF8574/PCF8574A GPIO Module
×1

Software apps and online services

Visuino - Graphical Development Environment for Arduino
Visuino - Graphical Development Environment for Arduino
Arduino IDE
Arduino IDE

Story

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Credits

Boian Mitov

Boian Mitov

75 projects • 339 followers
CEO of Mitov Software, and creator of Visuino

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