I built this flashlight so i would have one that used sunlight and didn't require any batteries. When fully charged it can stay lit in approx 30 minutes.

Step 1: What You Will Need

Picture of What You Will Need

Step 2: The Circuit

Picture of The Circuit

Step 3: Putting on the Solar Panel

Picture of Putting on the Solar Panel

Step 4: Add the Capacitors

Picture of Add the Capacitors

Step 5: Mounting the Switch

Picture of Mounting the Switch

Step 6: Mounting the LED's

Picture of Mounting the LED's

Step 7: Connecting the LED's

Picture of Connecting the LED's


mdempsey617 (author)2017-02-09


This project is awesome and just what I was looking for. I am traveling to Honduras in a few weeks with a group of engineering students and we are attempting to teach children at an orphanage about solar energy. On top of that, we are wanting to give these children a sustainable technology they can use in their everyday life - hence the flashlight. Due to the frequent and unpredictable power outages the orphanage faces, I was wondering if there was a way to make this particular design last for a few hours rather than 30 minuets. Would replacing the capacitors with rechargeable batteries help? I would appreciate any suggestions you have.


jerrymonkey123 (author)2016-06-07

normally the cap's limit voltage will be twice.Ex your solar is 5.5 then for safety you should use 12V or 16V. Caps are as danger as a lipo battery.IT EXPLOSES!!

GeckoDiode (author)2015-06-07

If the capacitance of the super capacitors were higher, would the flashlight stay lit longer?

bergerab (author)2014-06-19

Personally I'd love to see some more textual explanation of your steps, but all in all you nailed it! The project looks really professional and sleek!

sammydogjj (author)2014-06-18

Nice profile pic ;) lol

Radionuclei95 (author)sammydogjj2014-06-18

Thanks lol :-D

Jan_Henrik (author)2014-06-18

Very awesome!! Simple but nice!

dbyrd26 (author)2014-06-18

Very nice instructable. I like your use of supercapacitors!

Radionuclei95 (author)dbyrd262014-06-18

Thanks :-)

About This Instructable



More by Radionuclei95:DIY SOLAR FLASHLIGHT V23D Printed UV BlacklightDIY SOLAR FLASHLIGHT
Add instructable to: