(Experimental) - lit Bike

With the ESP8266 as the central microcontroller, I'm trying to develop a LED lighting solution for a bicycle to improve visibility in traffic after sunset.
I aim to make this solution a modular solution meaning
- movable from one cycle to another
- rechargeable batteries inside the electronics enclosure
- app control for changing colours

As for any project, there are some milestones.
The final version will have a fully developed PCB with a power distribution circuit and a BMS for a 3S Li-Ion battery pack.

What you see on the left are some of my thoughts while thinking about the design. And below that is a basic test bed to test the behaviour of some button interrupts.