DIY Bike Light's




About: I love small intro so, I'm a 16-year-old boy how loves thinking and creating. And don't forget to follow me on Instagram @vikaspal2131

Intro: DIY Bike Light's

Early in the school days to youngster's life, there is always a kind of knee to upgrade their bike's by changing the preinstalled equipment by high-quality equipment from shock absorber to heavy tires. All they want is to make their bike's as best as they can.

Nowadays, one of the best trends in bike upgrades is lighting system. Many riders or biker's use light's on their bikes to make it more attractive and charming look. There are tons of lighting system available in market's to choose from, which provides us with plug n' play options, But for me, it's just like "where's the fun in that"?

I wanted to make one of my own instead of buying one. Are you of the same ideology? If yes, then stick around with this instructable and you will also be able to create a simple lighting for your bike.

Full video tutorial for this project:----

Step 1: How Will It Works?

At the beginning, I want to tell you that we're not going to make a super-duper lighting for our bike, I will only show you a way by which you can power your led's without any external power source. You still need to use your knowledge and brain to make that even better.

Our project just uses simple phenomenon for the power source, It just a simple motor which generates enough electric energy to power led's by the power of your pedal. It's just a free energy.

Step 2: What You Will Need

This instructable is super easy to build and follow. You can also make this project in just a couple of minutes.

The things you will need for this project are as follow:------


1. 5v Dc Motor ( Using a big needle motor will work better)

2. A multicolor Led

3. A bottle cap

4. Neodymium Magnets

5. A wheel ( use a big wheel for better result)

6. Zip ties

7. Wood

Step 3: Motor Meets Led

Take out your motor and connect it power source wires to Led's power source strips. Don't worry about the polarity for now, we'll solve that in the later steps. Just connect both power source wire of motor and led together and move to the next step.

Step 4: Body for Led

A simple glowing Led would not seem attractive and it also does not reflect light well. For this, we'll use a regular bottle cap as a light reflector. Start by making a hole in the center of the cap that would be enough for the placement of an led. I suggest you to use a soldering iron for this purpose, it will easily make hole in the cap. Also after this, cut out a little portion from the corner side of the cap to make a way for the passage of wire.

Now, place the led inside the hole and pass the wire outside of the cap from the little portion we cut before. Fill the whole cap with hot glue using a hot glue gun and place a 3-4 stacked neodymium magnet of on top of the hot glue before the hot glue gets dry and became hard.

Step 5: Preparing Wood Blocks

Our mechanism is ready, all we want is to place it on the bike. For this particular purpose, I'm gonna use some wood blocks as I think it will support the mechanism better than anything else, simple and gets the job done.

We're going to use 2 wood blocks measuring of length 5cm x 2cm x 2cm and 3cm x 2cm x 2cm. Take the bigger wood block and by using hot glue, paste another wood block on top of that. Above on top of that small wood paste the motor on it again by using a hot glue gun.

Note: You can use also try other dimensions as long as they work to place our motor on the bike.

Step 6: Wraping All It Together

Now heading forward toward our last step, all we need to do, is to fix the wheel to the motor and place that whole stuff on the bike. So, take your wheel and before joining it to the motor apply some super glue on motor shaft so that the wheel doesn't pop off when you're riding your bike very fast.

Now here's a problem maybe arise in the placement of the mechanism. That is polarity issue for which we have discussed before. To solve this issue, just temporarily align the motor on the bike keeping motor side downward and where the motor wheel touches the tires. Start rotating the tire and observer if it glows or not. If yes, then align the motor on that side of the cycle and if not then place the mechanism on another side of the cycle. This problem arises because motor generates different side of polarity if rotated in a different direction and if the polarity of led and motor differ's then the led would not glow.

Once you know the side where you need to place it then align it with a bike frame where the motor wheel can easily touch the tire and fix that position using some zip ties and now you can paste the led on the bike using the magnet inside the cap.

Congratulation's we've completed our project, you can now also upgrade this project by adding more led's or say long wire and control the light's using some microcontrollers. Use your skill to make it more high-tech and attractive.



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    5 Discussions


    8 months ago

    Your project is right on with the spirit of Instructables. This is a good example of a quick and simple DIY for the fun of it project. Nothing fancy, common materials, something anybody can try. I like it.


    8 months ago

    this ideia is cool... but some tips: Use motors from printers, not the step-motor (newest printer have no more step-motors cause the software does the job very well). They are not so bigger, and could provide more than 12v! (some printers have the rubber wheels that you can use).

    Try to use some linear regulators (you can use the bike frame as heat-sink) or DC-DC converters (less power consumption, more efficiency). Much fast you go more power the motor will offers, so when you cross 3v, the led will burn fast.

    Will be important if you can measure how much power produce by rpm. In the future, do a speedometer using a ADC (Make a resistor divisor to not burn the ADC).

    1 reply

    Reply 8 months ago

    Yeah, you got the point. It's very good tip and I think everyone should use your tip in making these types of lighting in bikes.


    8 months ago

    One suggestion. add a diode after the motor and a capacitor parallel to the led. The capacitor can store some energy to light up the led when the bike stops.

    1 reply

    Reply 8 months ago

    You're absolutely right, I just forgot about that little thing. It will be much better to use a capacitor to ensure a smooth lighting.