Finding the pin-out and testing a DVD Player LED Display for re purposing it on Arduino projects.
More details about this display and 7 segment LED display basics with some code: https://youtu.be/SIwdiQYyt2Q
A digital clock using this display and Arduino Nano with a DS1307 RTC module, all with code and schematics in the video: https://youtu.be/xrNe-5_RooI