Here's my new build a curved lightsaber with bar graph.
CFX
RRW Tri-Cree
28mm SO base speaker
3.7volt Panasonic battery
https://i.imgur.com/I9C1HXv.jpg
https://i.imgur.com/R09l9xt.jpg
https://i.imgur.com/p9NHKTD.jpg
https://www.youtube.com/watch?v=YLJi13FgAHw