There are a already a lot of RC car projects using a smartphone to control the car using ESP8266. this is just a fun college project, with a much better speed control. This Project uses HTTP Requests.
The code runs on the NodeMCU firmware for the ESP8266. Thanks to all contributors of this project ... two rings have to be built with WS2812-LEDs. One ring shows the seconds, the other one shows the ...
For his example image, [CNLohr] has a few WS2812 RGB LEDs connected to the ESP8266 WiFi module. Uploading the image turns the LEDs into something controllable with UDP packets on port 7777.