USB Flashlight

Another project that ought to be pretty easy. I'd like a USB flashlight that I can use with my battery pack.

I found a buck module on ebay for ~$3 that can handle 3A and provides constant current so use that.

Use a 1 watt LED. I'm also thinking of using two strips of the thicker copper wire to make a flexible neck. Flashlight reflectors are pretty cheap on ebay.

Cost

• regulator $3
• LED negligible
• reflector $1.5

So ~$5 for the project.