Charge Your Phone With a Candle!





Introduction: Charge Your Phone With a Candle!

In this instructable I will show you how to make a device that will charge your phone and give off a soothing light with a candle. If you like this instructable then please be sure to vote for me in the make energy contest

Step 1:

To make this, here's what you will need:



Step 2:

To start you Will take the cans and cut the lips off the top, so they can fit on top of each other. Then I cut three slits equally spaced apart. I also you Will need to poke some holes in the sides to allow air flow.

Step 3:

I tested mine out and found that I needed more holes so hooked some in the top. Before you continue be sure light the candle to see if it goes out. If it does then you will need to poke more holes. This step is all about trial and error.

Step 4:

In this step we will build the circuit. Just follow the scamatic and you should be fine. Other wise, I added the pictures of me building the circuit. Use them for reference when building it.

Step 5:

next I took my heat resistant epoxy and glued the cooler to the top can. I recommend placing something on top to prevent it from falling off as it sets over night.

Step 6:

this step is pretty simple, I trimmed down the circuit board.

Step 7:

To finish is simple, light the candle, cross your fingers, and hope for the best. If it didn't start charging right away then give it a moment becuase it takes time to heat up. Thanks for viewing, and don't forget to vote.

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    71 Discussions


    1 year ago induce other kids in error..peltier element produce current ONLY from temperature difference...your device is a toy... in one minute is heated and stop produce whatever..

    I like it! Maybe combine this with a DIY Beautiful Candle and just put a USB socket in the base. Light the candle and it gives off light and USB voltage! All lights should be replaced with these!!!


    2 years ago

    How many watthours can a single small tea candle produce? can someone kindly explain how to get the answer?

    Hi, I'm a high school student and I want to create this for my school project. Sadly, I'm not very familiar with electronical components and I'm not a native speaker. Can please someone explain the schematic of step 4 or recreate the scheme for me? Thank you.

    1 reply

    #AndlToo_17 the bits saying 100 uf and the 10 nf are capacitors. You just need to solder all the pieces onto a perf board and it should work.

    Cool !! Can you cool down one side of the peltier with a heat sink to make it more efficient / draw more amps out of it ?? I think it makes electricity out of the difference in temperature, no the heat itself right ? Also could you wire two of these in parallel on the same can, to draw more amps and charge the phone faster ??

    Cool !! Can you cool down one side of the peltier with a heat sink to make it more efficient / draw more amps out of it ?? I think it makes electricity out of the difference in temperature, no the heat itself right ? Also could you wire two of these in parallel on the same can, to draw more amps and charge the phone faster ??

    Do you know what would be a great idea is that if NASA used this concept. Because the heat from the rocket engines goes to waste but what if they could be used to charge the batteries used to power the craft. There is a downside to this; you would need a industrial version of this and it would initially be a bit heavy. Hey one question what is the rate of heat per second to watts per second produced. Because this could revolutionize renewable power as we know it.

    11 replies

    Incredibly inefficient process and metals kinda have to be pure not super strong heat resistant alloys. It only works here since there's so so so much waste heat, but probably about 1-2% is actually turned into power here.

    That is a great idea. Another great idea is if every person covered their auto exhaust system with these devices to generate electricity with them instead of using the alternator. That would allow the engine to not be slowed by the pull of the alternator, so the car will feel more peppy.

    in trans-atmospheric use perhaps, but the batteries are already charged, in the vacuum of the space forget it. peltier devices generate electricity from one differential in temperature not the temperature itself, and its extremely complicated to cool a thing in space without cooling media: The space void is the most insulating "thing" around the universe.

    At least in 'near-solar' space, many man-made objects are designed to rotate... the temperature in our neighborhood seems to range from -250 degrees to 250 Fahrenheit... 500 degree differential.

    Having something like this on the surface on all sides seems like it could help maintain a charge, at least while not in the sun/moon's shadow... just set a rotation to accommodate the best temperature change

    awesome instructable. great to have while hiking/camping. and VERY light.

    Sorry but near all man made space objects are not made to maintain a rotational position. Why? In almost every satellite you have 3 inertia discs in order to position the object helped solely from inertia conserved momentum (a smart and very old technology that could move a satellite only with electric motors, and 0 fuel). this mechanism is incompatible with rotational objects or satellites.

    The rotational movement that we every see in space news and films is due to moving objects, and this rotation is used like a giro effect in order to gain linear movement precision and pinpoint the path accurately.

    Anyway supposing that you have a rotational satellite, it will behave like a roasted chicken in an oven... he will attain a stable thermodynamic equilibrium (due that the satellite in a perfect vacuum insulation behaves as a isolated system). In order to use the seebeck effect you need to have a thermal flow, aka a thermal sink, and in the space I repeat this is a terrible issue (check the ISS thermal sink, and you will be flabbergasted of the tech required and bulkiness, and yes the ISS doesn't rotate)

    Or you could use a tiny solar panel, (NASA and ESA boys use it for a reason)

    thanks Madvic for the info! l love this place and always learn.

    So, please bear with me here... for a thermal sink to perform it's job it requires a medium for the heat to be passed into? and the vacuum is essentially nonthing tangible for the heat to be passed to?

    I never thought of the thermal properties of vacuum, just thought heat 'radiated away'...

    a quote from an googled explanation of temperatures in space (just past the upper atmosphere) put it simply:

    *This means there is almost no matter to transfer energy*

    it sounds like what you are explaining... =D

    Yes In fact it is..!!

    You need a media "taking the heat" from the sink, if not the sink only performs like a condenser performs in electricity; it will take longer to reach the thermic equilibrium due to the mass addition of the sink, but when he reach this equilibrium no more cooling/heating.

    The heat is transferred by Convection; Conduction and Radiation. The 2 first need mass or matter to transfer heat. In vacuum you are right, you could only play with radiation.

    You have used the vacuum as an almost prefect insulator, several times in your life I bet: Every time that you have used a thermo for the coffee, soup or whatever you have used it, google "Dewar flask"

    All people think that going to space is like going to grandma freezer but worse, but in fact the huge problem is the overheating that you have in near space, sunshine does no good up there.

    And thank you to you to ask! its a pleasure!!!

    Be sure of the NASA people knows this effect very well. It is uses in many space ships and robots. BUT, remember that the rocket engines wastes it's fuel after a few minutes of work. And in this minutes, the energy is not a problem. The energy is a problem after months in the space, specially when the ship goes far from the sun and the solar panels can't generate enough energy.

    They do recycle the heat off the rocket engines, they use a different system because of the extreme heat.