Make a PAC LITE Only Smaller

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Introduction: Make a PAC LITE Only Smaller

Build this handy little torch that can be kept in spaces smaller than a matchbox and be left feeling all dandy. BEWARE this is not a project for the unpatient. it may look like a small project but in fact it will take longer to build than you think.

Step 1: Materials

You Need:
1) a small LED
2) 330 ohm resistor
3) battery clip (hard shell type)
4) hot glue
5) 9V battery
6) Black permanent marker

Equipment:
-Soldering equipment
-Drill and Drill piece (size of LED)
-Hot glue gun
-Flat head screwdriver
-Blu tack

Step 2: Pry Open Battery Clip

pry open and remove both wires including the metal tabs that held them

Step 3: Drill Hole in the Middle of the Top Half of the Battery Clip


Step 4: Solder the Resistor to Positive Terminal of the Battery Clip Like Shown in the Photo


Step 5: Solder on LED

Note: solder the positive lead of the LED to the resistor (the LED and resistor leads have to be cut off as short as possible to save space as there isnt much left in the battery clip) and bend the negative lead out in the direction of the opening where the wires used to go out of. DO NOT CUT THE NEGATIVE LEAD OFF.

Step 6: Test the Circuit

Test the circuit by pushing the battery clip onto the 9V battery and pushing the negative lead of the LED onto the negative terminal of the battery.

You may also want to strengthen the negative lead of the LED so that the wire doesnt change shape when you push it, otherwise the switch will deform and stop working

Step 7: Close the Battery Clip If It Works

If the LED glows when you tested the circuit you are ready for closing the batery clip. It might take some squeezing to get it all in the right place and snapped shut.

Note: the negative lead of the LED has to be threaded through the hole in the top half of the battery clip before closing it

Step 8: Make the Blob Button

Cut the wires extending out of the battery clip to about 7mm. Put a blob of hot glue on it. Once the hot glue has hardened colour it in with black vivid. Theres the dandy light finished

Step 9: Finished Product

Heres the finished light. smaller than the one you can buy. I think it would be possible to use two LED's to make it brighter, or use a larger LED (5mm). I believe the light should last about 8hrs or more. after all the LED only draws 20mA of current which will take a long time to drain the battery.

Im sure once you've made one you'll be feeling all dandy

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    43 Discussions

    I've been told that if you wire it in series it'll still only use 20ma but wiring them in parallel it'll use 60. but since you have 9v to play with it would be smarter to use 3 white leds with no resistor. most white leds are 3v.

    See my sensor version! (Click my name to see my My I'bles)

    --------------------------------------------------------
    "May the good belong to all the people in the world.
    May the rulers go by the path of justice.
    May the best of men and their source always prove to be a blessing.
    May all the world rejoice in happiness.
    May rain come in time and plentifulness be on Earth.
    May this world be free from suffering and the noble ones be free from fears"
    ---- Vedic blessing


    indeed a great beautiful project, compliments, has estimated it the maximum, I adores the minimalistic inventions, has realized instructable a much similar one to yours, that mine it is a portable usb charger a not torch, but the small torch is however much pretty one, very good!

    Hey gud instructable, I made a version of this mixed with YAN9VUSB instructable so it's housed inthe outside of a 9v battery! heres some pics

    Bright!.JPGMy torch... thing.JPG

    Nice Instructable. I especially like your drawing in step seven, very detailed. I wish more people could learn to draw like you rather than a puddle of color made in paint that "illustrates" how to build a car. :)

    This circuit is a LED and a resistor in series, lets say you have an high intensity LED, 3.4V 20mA. the resitor would have to have a voltage drop of (9-3.4) 5.6V, we then use ohms law to calculate the resistance.

    R=V/I
    R=5.6/0.02 0.02= current through series circuit
    R=280ohm

    If you want a brighter light just decrease the resistance a bit to that of your calculated value, generally this wont harm or shorten the life of the LED as the stated value for max current is usually lower than tollerant

    hope that helps

    for the cellphone battery emergency light..you could build some form of "clip harness" type deal that the cellphone battery could fit into with the led/resistor combo could be built into...so you could keep it in your bag...and in an emergency you just pop the battery out of your phone and stick it in the clip deal...thus making it work for the light...but you'd also still be able to stick the battery back into your phone for charging it..

    This step is a little harder than it seems. I've ruined two of the battery clips lower halves by trying to pry off the bottom. It seems like it is really attached on there well. Anyone have any tips on prying off the lower half.

    1 reply

    Try using the tops (with the clips) from old 9 volt batteries. they are relativly easy to remove.