I put together this fun panel at HeatSync Labs a long time ago. I won't reveal the secret about how to activate them. It is part of a bigger donation bin / fidget box. I never got around to adding the coin slots to this part. Last night I spent some time testing using an IR sensor for detecting coins. I figured out how to adjust the signal the way I wanted.
I'm testing out the Elegoo Most Complete Starter Kit for Arduino Uno R3. Everything is too simple. Just wire things up the way they show and run the example code. I figure it would be more fun to add more things to the donation bin. This will give me reasons to dive into changing the code.
Anyway I have a couple not very good photos of the lights on the FUN panel. That day I just decided I need to work on something fun. It worked. I enjoyed doing it.