airair
Sr Member
If running a 9V system, I would think you would use higher voltage LEDs?
I like 3V. Cheap and easy to run.
I think you're right.
The thing is that I bought a bulk load of LEDs in green, yellow and red, so kind of stuck to using these.
The only things i've had to do different is just use a different resisitor for 3v setup and the 9v setup.
3v wired in parallel and 9v wired in series.
I do like the 3v setup i've made slightly better personally as AAA batteries are dirt cheap compared with 9v batteries, and the rechargeable 1.2v AAA's have a really long mah, about 1000mah and you can get ones with 1500+ (but not sure if they are that reliable).