HariFun #133 - 8 LEDs, 8 Buttons, just 2 Arduino pins!

More I/O Madness using the #PCF8574 Eight bit I/O Expander. This time using an #Arduino Nano instead of the #ESP8266 Code is at: https://hackaday.io/project/11078-har... Music credit: The Lift Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/b...