How to make a simple flashlight

how to make a simple flashlight

Make a Flashlight!

Nov 21,  · Take your other battery, and place it in the opposite way that the first battery is facing. In otherwords, the terminals touching should be opposite. Take your light bulb, and attach it withtape so that the threads of the bulb is touching the positive terminal. If you are confused with terminals, ise the last picture to help you. Simple Internal Configurations Illuminating an LED is actually very easy as it doesn’t involve much in the way of technical or electronic skills. Simply by connecting an LED’s anode and cathode terminals to a voltage source the LED can be lit brightly.

To create this article, 87 people, some anonymous, worked to edit and improve it over time. This article has been viewedtimes. Learn more There are plenty of flashlights on the market today - models that you shake, crank, twist, click, and more.

If none of these flashlights tickle your fancy or you don't want to pay lots of money for unneeded bells and whistles, you can make your own flashlight from a toilet paper tube and other basic supplies you can find in your home. If you want to make a homemade flashlight, use electrical tape to attach a piece of wire, like copper speaker wire, to the negative end of a D battery.

The end of the wire should be sticking out of the top of the tube. Insert the next battery into the tube, negative side first, then tape the bulb to the top of the battery. To light the flashlight, touch the silver part of the bulb with the wire. If you want to learn how to make a flashlight with a switch you can easily use, keep reading the article! Did this summary help you? Yes No.

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By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article methods. Tips and Warnings. Things You'll Need. Related Articles. Article Summary. Author Info Last Updated: February 18, Method 1 of Gather your supplies. Clear an area to work in and invite the kids and family to come watch you manipulate electricity with your bare hands. You'll need: [1] X Research source An empty toilet paper roll or lightweight cardboard rolled into a small tube 2 D batteries Tape electrical tape works well 5" A bulb from a string of Christmas lights works quite effectively.

Tape the wire to the negative - end of one of the batteries. Make sure it's snug and not going anywhere, or your light will end up flickering. You don't want any light to sneak through, dissipating its strength -- that would be one poorly working flashlight. Insert the battery, wired list of colleges and what they are known for first, into the toilet paper roll.

Even though the wired end is facing the taped bottom of the roll, the other end of the wire should be sticking out of the open how to make a simple flashlight. Insert the next battery, negative side first. Its negative side will meet the positive side of the battery, which is already inside. This connection continues the flow of electricity from back to front, ultimately lighting up your device. Tape the bulb to the top of the battery.

Be confident there's an adequate direct connection between the two surfaces basically, make sure it's sturdy. Make sure you can still see the bottom half of the bulb. Light up your flashlight. With the wire, touch the silver part of the bulb. If it doesn't light up after a few tries, check the tips below for troubleshooting.

Method 2 of Gather your materials. It's time to beckon the MacGyver within you and get started. Attach a brass tab to the end of each wire. Wrap it around to secure it. Punch the tabs through the same side of the cardboard tube, but with the wires coming out of different ends.

The pointy ends should be sticking out of the tube. Tape your two D batteries together. Make sure the positive of one end is on the bottom of the negative end. How to dress like serena battery should double in length, not width.

Make sure they're firmly attached to each other and slide the batteries into the tube. Tape the wire on the negative end to the battery. The negative end is the flat one. Masking tape is sufficient for this. Cut a hole in your small cardboard strip. Place the wire on what is xml file format positive end through that hole and wrap that wire around the bulb.

Place the end of the bulb into the hole so it can be supported by the cardboard. Place tape around the base of the bulb and cardboard to keep it secure to the wire.

It should start flickering on at this point. Cut a hole in the bottom of a paper cup just large enough for the bulb. Place the bulb into the hole and secure the cup to the cardboard base with more tape.

Insert a paperclip or soda tab in between the two brass tab ends. When the paperclip is touching both, it conducts electricity and turns your flashlight on. If the paperclip is moved, your flashlight will turn off. You can use a soda tab instead of a paperclip, too!

D batteries are generally bigger, so they won't move too much in the roll. Not Helpful 24 Helpful What do I need to do if the light bulb doesn't light up when I touch it with the wire? Check if the batteries are able to produce the required voltage that your light bulb needs to light up -- for example, if you have a 3V bulb, you need to produce 3V. If you have a battery that can produce 1. That could be done by connecting two batteries, which will produce 3V 1.

Also, check your wiring; if the what effect does progesterone have on the endometrium are messed up or aren't what does the yellow equals sign in blue box mean well, chances are they won't work.

Try to tape them or use hot glue to permanently connect them with the batteries. Not Helpful 8 Helpful Covering the flashlight with plastic wrap should protect your flashlight from the elements, at least for a little while. However, this will make it water resistant briefly, not waterproof, so don't take it swimming. Not Helpful 38 Helpful Most convenience, department and even craft stores have mini light bulbs.

You could also try to go to a gas station or grocery store, but this is snot guaranteed. Not Helpful 37 Helpful For the wire that is connected on both ends to a brad inside the cardboard roll, what is this wire connected to make the flashlight turn on and off? The pop tab, or paperclip, whichever you use. It connects the two brass clips, causing the circuit to complete and the light to turn on.

Not Helpful 22 Helpful That depends on what project you are trying to use it in. This torch can be handy in an emergency, or you can use it for some kind of decoration. It is not recommended for regular use because of the materials used.

A good flashlight is easy to hold in your hand, has a good source of battery power, and of course lights up with the assistance of the batteries and wire. It should have an excellent range and brightness suited to your specific needs. Not Helpful 29 Helpful It depends! If you made the flashlight how to repair paperback books a switch that can turn it on and off, then it will last quite a while!

If not, then there is no way to turn it off unless you take out all the wiring.

Introduction: Flashlight With No Batteries

Feb 06,  · Three Simple Options—Two of Which Involve a Resealable Plastic Bag If you any sandwich bags on-hand, the second two male masturbators in this video are super easy to make. For example, something as simple as a potato or a copper penny can act as a battery for a single LED, a Christmas tree light bulb, or other small, low wattage bulbs. That being said, liquid batteries made from acids or even earth batteries may not be practical for a flashlight because they are not portable or may cause other problems. Flashlight With No Batteries: This is a simple method to make a flashlight that will last forever. It uses a small stepper motor to generate energy and many capacitors for keep it stored for several seconds. Ps: I'm from Argentina so let me know any grammar mistake.

The key to the lantern is to put capacitors in parallel to be interpreted as one large-capacity capacitor. I use 40 capacitors of uf 10v.

If you use more capacitors the torch will stay lit longer. Solder four rows of 10 capacitors each one. Then solder the rows together. Draw the box on the cardboard. Trim the excess parts and fold by the lines.

Paste a strengthening in the areas where the motor will be attached. Use double-sided tape to close the box. If your cardboardis very hard use scotch tape to keep it closed. Use the pdf file attached as a guide.

Solder the four diodes to the contacts of the individual coils of the motor in the male connector and a small piece of wire to pin cable which connects the common of the four coils.

Solder the output of the four diodes to the positive of the capacitors and the wire to the negative. Solder two pieces of wire on the opposite side of the capacitors. Then insert it into the box. Cut the plastic about the size of the top. Drill two holes for the led holders and paste.

Inset leds, solder two resistors in the positive terminals of the LEDs. Solder the negative together. Then solder the wires coming out of the box and paste the plastic to the cardboard.

Use a zip tie to attach the motor to the cardboard box, remember to connet it to the capacitors. Use a small piece of plastic and hte spacers to make a handle and paste it strongly to the motor gear. Question 2 years ago on Step 6. Tenia pensado en hacer algo asi yo tmb.

Nunca sabes cuando necesitas una para alumbrar a un demonio que es debil a la luz y que te ha destruido toda la iluminacion de la casa :P.. Creo que tengo un motor chiquito de continua no paso a paso , capaz que pueda servir igual. Y concuerdo con que un envase de plastico ignifugo seria mas conveniente.

Por lo demas, muy buen trabajo!. Look up laser hacker. They can turn the lights on for a long time. Reply 5 years ago.

The name of of the project is "Flashlight with no batteries" If you want a flashlight with batteries, there are millions out there in the store. Reply 10 years ago on Step 9. Rechargeable AAA batteries, depending on the type, will need a complex charger to prevent overcharging and it has to be at a certain voltage. Those circuits are very complex, its not easy. Great looking diy no battery light, I agree with crumpton that pvc or something would look better and be easier to carry. Great project, but for a project this nice I think you might do better to put the body in a plastic box like a tupperware, or maybe a piece of PVC pipe rather than cardboard.

Reply 8 years ago on Step 2. Reply 8 years ago on Introduction. Thank you, your 'ible and biotele's 'ible have inspired me. I am trying to make something similar using an old hand cranked torch.

I used 4x uf 6. It seems very dim unless I crank it continually. So you have used 10 volt capacitors if the capacitors were lower say 6. Or is your torch dim too? Now to figure out, how would I do this with a battery pig of a camera. That's Excellent If you don't mind, I have some suggestions for you You can add some more gears you can find them in toy cars , so that, when you complete a round of hand-crank, the motor will complete its 20 - 25 rounds Introduction: Flashlight With No Batteries.

By brunoip YouTube channel Follow. More by the author:. About: Robots and video games More About brunoip ». This is a simple method to make a flashlight that will last forever. It uses a small stepper motor to generate energy and many capacitors for keep it stored for several seconds.

Most materials are recycled from the trash. You will need: Two LEDs, with their silver led holdres. An unipolar stepper motor with its reduction gear. One or two broken PC motherboards, to remove the capacitors.

Two ohm resistors. A sheet of cardboard. A small piece of plastic. Plastic spacers. Four rectifier diodes. Spray paint. Attachments linterna. Paint the cardboard to make it look better and be more resistant to moisture. Did you make this project? Share it with us! I Made It! Answer Upvote. ErnestoS 4 years ago. Reply Upvote. TravisM18 5 years ago.

ChrisM 5 years ago. PONG 7 years ago. Adambowker98 8 years ago on Step 2. Adambowker98 brunoip Reply 8 years ago on Introduction. Maybe not the prettiest flashlight in the world Very nice instructable. Your idea is brilliant of using capacitors and stepper motor.



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