Building a LED driver circuit and battery charger.

[PeterF]

Thanks for your reply!

@Lexel

if you want good CRI go for Nichia 219C they can use 9050 CRI >92
A nichia 219 can easily provide 300 OTF lumens within specified current range and 2 hours runtime on a 3000mAh battery

It took me a while to select a suitable LED, the NF2L385 that i want to use is more or less the only viable option i got.
I need a LED with a If of at least 4.3V, that means i have to use two in series, the NF2L385 has two dies in one package.

To get to 300 lumen i still have to use two of them but, this is the most important part.
They only cost 70 cents a piece, that is 1.5€ for two of them, compared to the 4€ of the 219C.

The rotary encoder is not for the flashlight itself, i want to put the circuit into a lantern as well.
The lantern will get the rotary encoder.

The whole body i want to build myself:

3D printed 18650 light, playing with the idea.

Hello! Quite some time ago i sparked the idea to build a flashlight, it is a few months later now and i have a rough idea on how to do it. In my parts bin are about ten 18650 cells, 20 LED drivers, a few Nichia LEDs and a 3D printer, all that needs to be put to good use. So i am set on these four things, here is what i came up with so far, just made some prints to have something in my hand to play with: [Imgur] What i know so far, a 3D printed case s…