Lipo Battery Charger Circuit

[James]

Hi Richard, Welcome to the forum!

You can certainly power LEDs from the 3.3V regulator on the board if you don’t want changes in brightness due to the battery slowly draining.

Powering a string of many LEDs can be a little difficult though, see my post here:

Multiple POLICE flashing LED's

Hi John, Driving that many LEDs isn’t quite as simple as plugging them all in, I found a good article on the two approaches: https://www.arrow.com/en/research-and-events/articles/let-there-be-light-working-with-leds-in-parallel Basically you can either add a boost-capable IC to drive many LEDs at a time in series, or try and characterise your LEDs to drive them in parallel safely. As far as Arduino choice, It’s all about how many different things you want going on at a time. Obviously each p…

How many LEDs were you needing? What colour were they (a hint to get an idea of the forward voltage)