Make a 2.4 GHz Yagi with paper clips and popsicle sticks

Yesterday, a Tweet appeared in my feed, directing me to a Sparkfun blog post describing how to use popsicle sticks and paper clips to make a 2.4 GHz WiFi Yagi antenna. I love this project so much that I thought I’d give it some publicity here.

http://www.kb6nu.com/wp-content/uploads/2017/03/2-ghz-yagi.jpg

As you can see, it’s really more than a Yagi antenna, though. It’s more like a 2.4 GHz field strength meter. The board on the antenna beam is a SparkFun ESP8266 Thing, which includes an Arduino-compatible microcontroller and a WiFi interface. The microcontroller is running a sketch (that’s what the Arduino folks call a program) that reads the received signal strength from the WiFi chip on the board and displays that value on the little LED display.

http://www.kb6nu.com/make-2-4-ghz-yagi-paper-clips-popsicle-sticks/