The EXTREMELY EASY VERSION of the Super Capacitor Flash light

Hi everyone!
I recently wrote an instructable on how to make a super capacitor flashlight, but I made it too complicated, and it employed a microcontroller, which many people don't have the means to program.  So this one only employs a power supply, a dollar store flashlight, two super capacitors, a switch and a current limiting resistor.  I designed this so that my girlfriend (Who has no electronics background) could put it together, which she did.  This is her super capacitor flash light based on my design.   If you want to modify this design, you only need to follow the very basic arithmetic that I'll be providing.  Otherwise, all you need are the parts listed in the parts section (All of which can be found on ebay).  See the final product of this very basic flashlight below, then follow on to the circuit theory.  Because we're using super capacitors, THIS FLASHLIGHT CAN BE CHARGED 100,000s OF TIMES!

If you like this instructable, please don't be shy!  Comment and rate it!  This super capacitor flashlight will last for 100,000s of charges, which makes it SO COOL!  Below is a video of the final product.


For those of you who are interested, the below video is the final product from my more complicated super capacitor flashlight.  I have an instructable for this, so check out my profile if you're interested.  It can be found here:  http://www.instructables.com/id/The-Super-Capacitor-Flashlight-with-Custom-Charger/

Step 1 Parts List + Tools required + Notes

For this design, I will be using the following parts:
1)   2x 50 farad 2.7v super capacitors (Found on ebay for very reasonable prices.  Less than $10)
2)   1x Switch.  It needs to be a switch capable of supporting more than 2.5A at 5v.   You can also consider using the default switch circuitry of your dollar store flash light. Switches can be found on ebay for pennies.
3)   1x 2.5 Ohm 10W power resistor (Found on ebay for a couple of bucks)
4)   1x 5v 3A wall transformer.  (Found on ebay for a couple of bucks)
5)   1x dollar store LED flashlight (Found at any dollar store for a buck or two)  The bigger the flashlight, the better.  It makes for easier placement of the components.

Here is a list of the tools that I used:
1) Soldering Iron
2) Lead Solder (Tin/Silver will work just as well)
3) A Hand Drill
4) A Hot Glue Gun

NOTES: 
1) Make sure that the flashlight housing is large enough to fit all of your parts, or you're going to have trouble. 
2) DO NOT BUY a bulb flashlight.  They consume too much current.  Look for a white LED flashlight.  It will last much longer each charge.


 

Comments

[CrimsonSpray]

What kind of runtime do you get out of this?

[rimar2000]

Yes, this is simpler than former. Thanks for do it.