I'm building this (https://www.electro-tech-online.com/custompdfs/2009/01/473-click_here_.pdf) for an art project. I've got it built and working, but unfortunately I need it to be brighter. So far I've got some LEDs with brighter luminosities, but that's pretty much the end of my understanding. I would guess that I need to supplement some of the components to deal with a higher voltage to power more LEDs.
Any help would be appreciated
Any help would be appreciated