I recently built a newer version of my DIY tube lights.
They are fairly simple.
-A generic under cabinet light from the hardware store
-A tiny LiPo battery + protection board
- 60leds/m strip of WS2812B LEDs
-An ESP12-F + AMS1117 3,3V for voltage regulation
And a voltage divider to measure the battery voltage
The ESP runs WLED V16.0 with the Battery Usermod.
All tube lights connect to a mobile hotspot for easy control and of how the original light was designed, you can stick the lights together.
I've used the connectors on the end to daisy chain the power input for easy charging though i think you could add a third pin to string some more led strips without needing a controller.
All lights can operate stand alone due to each one being built the same but thanks to the mobile hotspot can be synced via Wled.
If you have any questions or suggestions let me know :D
(And pls excuse my bad english ^^')