Arduino - Building a relay-based binary counter is a fun way to show kids ( and perhaps some adults) how digital electronics work! http://bit.ly/3eMfuFW | Facebook
![arduino facebook like counter, Social Tracker Display ESP8266 : 4 Steps (with - Instructables - trpanj-peljesac.com arduino facebook like counter, Social Tracker Display ESP8266 : 4 Steps (with - Instructables - trpanj-peljesac.com](https://www.open-electronics.org/wp-content/uploads/2018/09/DSC_0226-500x153.png)
arduino facebook like counter, Social Tracker Display ESP8266 : 4 Steps (with - Instructables - trpanj-peljesac.com
![arduino facebook like counter, Social Tracker Display ESP8266 : 4 Steps (with - Instructables - trpanj-peljesac.com arduino facebook like counter, Social Tracker Display ESP8266 : 4 Steps (with - Instructables - trpanj-peljesac.com](https://www.electroschematics.com/wp-content/uploads/2014/02/arduino-binary-leds.jpg)
arduino facebook like counter, Social Tracker Display ESP8266 : 4 Steps (with - Instructables - trpanj-peljesac.com
![Facebook Page Likes Counter Display (with Particle Photon) : 8 Steps (with Pictures) - Instructables Facebook Page Likes Counter Display (with Particle Photon) : 8 Steps (with Pictures) - Instructables](https://content.instructables.com/ORIG/FAI/F4QK/IIOWRGH5/FAIF4QKIIOWRGH5.jpg?auto=webp&fit=bounds&frame=1)