Introduction: Led on Door Key for Those Dark Nights..

Picture of Led on Door Key for Those Dark Nights..

How many times do you find yourself struggling to unlock the door in the night?well personally many times so I made this..
Or you can get something like this..http://www.lvsales.com/keylight.htm but were is the fun in that?

Step 1: Parts

Picture of Parts

First lets see the parts. I wanted a high brightness led so a button cell at 3volts 2025 or 2035 was not an option since the led is really dim and does not last long.So I went for a li-ion cell for more power.
http://cgi.ebay.com/Li-ion-Rechargeable-LiR2032-Coin-Cell-Battery-w-H-Tab-/160437617991?pt=US_Batteries&hash=item255ad3c547
 CAUTION!!these are not protected so be very careful when charging! Then is the led, a white  wide angle flat top one, a small switch recycled from some old gadget and lastly  the key.



Step 2: Drilling

Picture of Drilling

For 2 reasons I decided to make a hole for the switch. The first is that I did not want the key to become too thick. The second and most important is that if the button of the switch was way out,when I would cover it in shrink wrap, it would be very easily pressed witch means that it would light up even in my pocket.So I drilled a hole big enough.On the next step though, it was needed to make some adjustments to the shape of the hole after soldering the tabs.

Step 3: Electronics..

Picture of Electronics..

Some soldering..no resistor but I guess it should be on for a few seconds only at a time.Little tape over the battery and test fitting and almost done..

Step 4: Done..

Picture of Done..

Lastly some heat shrink over everything,testing and all done.. A better solution would be elasti dip http://www.oag.no/productdetails.php?product=65 but did not have any..

Comments

3366carlos (author)2014-08-30

excellent.

dex3844 (author)2012-10-27

love this idea, works great :)

bricabracwizard (author)2012-07-22

I love this idea! It's simple, works and is practicable! I'm surprised you haven't had more views?!

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