Introduction: Generate Electricity Using Footwear-Charge Your Mobile(Piezo Generator)

Could walking or running generate enough energy to power your cell phone or GPS device? Do you walk enough in a day and use your phone regularly, in that case you may lookout for a power outlet to charge your phone.

Now what if you can charge your phone for free or in simple words you can get enuogh power supply to charge your phone or Lighting up LED by your footwear while running or Jogging.

So In this instructable I will show you how to make a footwear that generates electricity in super easy way. Before going to hands on let first understand sone Basic science behind it.

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Lets get Started!

Step 1: Concept and Principle

Piezoelectric materials have the unique and useful property of being able to transform mechanical energy into electrical energy, and vice versa. This gives piezoelectric materials a wide range of potential applications from sensors and actuators to artificial muscles. One of the most interesting applications is in the field of energy harvesting, where piezoelectric materials are used to convert mechanical energy that is typically wasted into a source of electrical energy. However, the technology of currently available piezoelectric materials and methods is able to produce a sufficient amount of energy that is enought to charge a Phone or Liht up a few watt LED.

Piezoelectricity is the electric charge that accumulates in certain solid materials (such as crystals, certain ceramics in response to applied mechanical stress.

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Step 2: Our Project

Piezoelectric materials are placed in the bottoms of the shoes, but they do not store any energy. So from where does the energy come? The energy comes from you! Whenever you walk, your movements are mechanical energy and some of that mechanical energy can be converted into electrical energy by piezoelectric materials. In the case of the light-up shoes, that energy is used immediately to light-up some LEDs, which brings up an idea.

Step 3: Ingredients

Materials:-

1. Piezoelectric Transducers

2,. 1N4007 Rectifier Diodes (4x)

3. Old Pair Of Shoes

4. Connecting Wire

5. Hot glue

6. Sticky foam tape

7. USB port

8. Capacitor or Battery (Lipo,etc)

Tools & Equipment

1. Digital Multimeter

2. Multitool

3. Rotary Tool

4. Cutting tool

Step 4: Let Make!

When force is applied to it it generates a small voltage in alternating current. Because most small devices use DC we need to convert AC to DC so to do this I have a bridge rectifier. Now that we have DC power we still need to charge the internal battery in the shoe/footwear so we need a battery charger so we don't damage the battery. Since most small devices use 5v we can convert it using a 5v step up converter. Now we have constant 5v power coming from the Shoe.

We can power USB lights or other small gadgets, can power a flashlight aslong as you are walkng and will last for about 30 minutes after you completely stop walking.

Step 5: Prepare Footwear

The foot wear is a heart of our project so try to take good quality of show such that while operating on it, it should not tear or get damaged.

Note : Try to take Footwear/Shoe of High Heel/sole such that we can have much space to put our battery inside.

I have taken a size of my sole on paper so that i can confirm my circuit is going to be fit inside the pit made.

Take cutting tools and dig a hole around high heel to make a pit according to your circuit sice and shape.

Step 6: Built Circuit

The circuit is made according to given block diagram.

Since the generated voltage is AC in nature hence we need to convert this AC voltage into dc voltage to store it into battery.

Once the circuit is made its to to assemble them into our footwear.

Step 7: Assemble

Take the circuit, battery and try to adjust this whole circuitry in shoe such that it get fits into the footwear within the permisible height of sole.

Attach USB port at its desired location as shown in diagram (You can add a small Cardboard/Plastic piece to cover the usb while not in use).

Glue them and let them Dry.

Step 8: Test and Success

Turn the multimeter to the 20V DC setting and start tapping on the piezo element. Expect to see the voltage across the capacitor increasing, which indicates that it is storing energy. If not, try flipping the switch to the opposite position. Once the capacitor has stored sufficient voltage, flip the switch and the LED should come on briefly. Note: The required voltage across the capacitor will vary, depending on the exact capacitor and LED used. As an example, using a 220 μF 35V capacitor and the LED light bar, required about 8.5V across the capacitor, while the standard single LED only required about 3V.

Now you can Enjoy free Energy to charge your phone or anything you want to respectively.

This marks the end of this instructable. Hope you liked it.

Please vote for the project and share if you think it was awesome.

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Fell free to have any query. Hope you liked my instructable.

Share and Vote Thanks.

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Comments

author

WELL, IT'S OK, BUT IT NEEDS MORE INFORMATION AND ELECTRONIC EXPLANATION... THAT'S ALL!!!

: D

author
agarw12903 (author)2017-04-15

Hi,

I want to do something like this, except store the energy in a battery, then use the energy anytime. In your instructions, you say you can use a battery, but I'm slightly confused. Do I need a capacitor or not? If I do need a capacitor which one? And where will the battery fit in the circuit? Please give me a circuit where I can charge a battery (MICD or NIMH) by piezo plates.

Please reply ASAP

Thanks,

Vatsal Agarwal

author
RishabhP19 (author)2016-12-17

how many disc are needed for this shoe, 4 disc are enough?

author
nsmdwaqas (author)2016-10-05

Could I use this Piezo board to generate electricity Transducer Piezo 4200HZ 30V ABT-441-RC please Reply

author
kavish laxkar (author)nsmdwaqas2016-10-11

Yes you can..any pizeo will work..:) but be careful about circuitry

author
Yonatan24 (author)2016-08-07

Great idea, I think I've seen ASCAS post something like this before...

I wouldn't ask, and write, "please vote for me" four times inn the Instructable, since this can annoy people and make them not vote on purpose. Once is enough :)

author
ryuga154 (author)Yonatan242016-08-07

Yes! You don't have any permission to do that. And the idea of this project is made from ASCAS

author
Yonatan24 (author)ryuga1542016-08-07

Tons of people have stolen his idea... What can we do about that?

I don't think he patented his idea (if you can actually do that), but giving him credit would be fair.

author
geekrex (author)Yonatan242016-09-18

Ideas can never be original as it always gets modified , if you see the topic it has been for ages nothing new , ASCAS got a good popular article so people think he made it , but what i thing whenever you make a build that has ur own contribution you are good to post .

author
kavish laxkar (author)Yonatan242016-08-07

oky i will keep in mind for next time..sry for that!

author
kavish laxkar (author)2016-08-05

Yes you are correct although these are some basic science how can we use them for our benefit..
If like plz do vote
Thanks

author
TaswarAli (author)kavish laxkar2016-08-07

Do you have the video tutorial for it bro?

author
kavish laxkar (author)TaswarAli2016-08-07

I dont have for this one but i l release it for very soon.
Mean while see my other tutorials. The link is here>

https://www.youtube.com/channel/UCzpuqnIheB4g1VSbv...

author
TaswarAli (author)kavish laxkar2016-08-08

Thank you bro!

author

I've actually been looking at something similar. Also a couple things you could add to create a more consistent power source. A battery system will allow you to charge your small battery and that feed into the phone or mobile device. I was thinking a small capacitor bank or a battery like this.

http://m.ebay.com/itm/New-6V-150H-Ni-Mh-rechargeable-coin-cell-battery-replacement-of-VARTA5-V150H-/151818743361?nav=SEARCH


Also if you want another idea to play around with. You know those flashlights that you shake.

You could put 2 of those on the outside of each shoe. Then a liquid filled insole and when you step it would force fluid up. That could work a 3rd system. They don't generate tons of electricity but it's another kick of electricity

author

Thats sounds cool..:D

Thanks for knowledge.

Dont forget to show me if you made it.
Greetings

plz vote if u like

author
Eh Lie Us! (author)2016-08-08

I love this idea. I thought of something like this back in my high school days but that was because I was day dreaming. You made it happen, man!

You got my vote!

author
sk8nfool (author)2016-08-07

Your circuit is missing a ground from the diodes' anodes on the left side of the bridge.

Have you considered using some of the piezo-plastics that are available (see http://www.te.com/usa-en/products/sensors/piezo-film-sensors.html?tab=pgp-story for and example)

author
kavish laxkar (author)sk8nfool2016-08-08

Hi

I use Block Diagram to show up the circuitry for simplicity. If i have been used each and every respectable then it may look like a mess. So i just shown up the important terminals. Basic ground are common.
Hope you got it..:)

author
TCSC47 (author)2016-08-08

You have only given us a quarter of the project. Voltage sensing switch? USB wiring? How did an LED magically appear in the testing of the circuit? Spec and sourcing of the piezo device? Battery spec?

You are missing a vital part of the circuitry. You need a diode pump circuit (look it up) between the bridge rectifier and the charge storing capacitor. The pump would decouple the voltage spikes generated by the piezo device from 0V and allow them to sum onto the voltage across in the capacitor. I presume the voltage sensing switch is really a voltage limiting circuit to avoid excessive pd, across the battery?

Sorry, not impressed.

author
Pulkit Gupta (author)2016-08-07

That's awesome I 'll try.

author
bodger-bill (author)2016-08-07

I'm still trying to work out why you need a voltage sensing switch in this position, it may just be necessary between the battery and the USB socket ?

4007 diodes have a very high reverse resistance and the capacitor will use very little power once It's charged up

Or have I missed something !

author
sk8nfool (author)2016-08-07

how about a complete materials list? What did you used for the Voltage Sensitive switch? What are the connections for the USB socket?

author
KISELIN (author)2016-08-07

I "really" like your doable.. BRAVO.. Anyway some comment's? Usually people go jogging, running, to lose some weigh, (and or calories), so the net win is = You turned the one power to another, Humor Humor... but true. Your right about many aspects there, but... the sad thing allways is the fact: You can't store AC-Voltage, (yes, you did read it right = Voltage, voltage is the potential difference between two electrodes, AC is, or actually the current Amps, is the flow of electrones between these poles). So, to harvest the energy form your running, requiers, as in your 'able, rectifireing the voltage and there you lose some effect.

author
kavish laxkar (author)KISELIN2016-08-07

Exactly.

Nothing cant be ideal but we can try to make them near to ideal and dat is what an engineer do.
Thanks for knowledge..;) :D

author
KISELIN (author)kavish laxkar2016-08-07

Thx to you allso. I really LOVE to follow these insrtuctable's.... so.... so wery me.

Next month when I get some money I surely will donate, say ~10$ , (couldn't find the Euro sign on my keyboard), to instructables. (What a wordmonster, (for us FIN), ) ;)

author
man_thas_cool (author)2016-08-07

That's a really cool idea! I wonder if It would make the shoes out of balance if only one of them had it in it. You might want to Adjust the weight of the other shoe to match. Or you could even double the power by putting another one in the other shoe, and then connecting them together if you had a really dead battery.

author

Thats a great idea! I'll think abt it...:)

Plz vote if u find it intresting.!

author
jgh59 (author)2016-08-05

This is actually quite clever, however, I don't suggest wearing these while going through security at the airport. You may even want to avoid packing them in a checked bag!

author
TIPSYwithWATER (author)jgh592016-08-07

Good catch!! Lol I immediately thought it would be useful for traveling... I usually drive anyway but I'd have never thought of that in an airport!! Glad someone said it ?

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Bio: I am Electrical Engineer who love to discover new things with the help of science and nature around me. I try to make it possible ... More »
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