Made a DIY version of the revolights http://www.revolights.com

total cost for one wheel is about 35 dollar

instead of a microcontroller i use simple reed magnet switches

the two outer rings consist of 18 Led's in 6 groups each all is powered by two AA batteries they are located on the hub

the only thing i don't have because i use the reed switches is the cool animation like revolights when the wheel stands still


36x High Power 8mm Led's (18 on each side)
2x two meter long Aluminum stripes 15mm wide (in my case shortened to 1,75 meter)
6x Reed magnet Switch
2x 2meter 7 pin flat ribbon cable (one for each side)
2x 7 pin mini plugs (for easy installation)
Zip ties to mount the whole thing on the wheel

Soldering iron
Hot glue gun
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toyzweee3 months ago

can you please make a step by step instruction?

why do you need one? It's pretty simple. You start with the outer rings that hold the leds, depending on what leds (single ones, strips, etc) you wanna use and decide how many sections you wanna have on that ring. Then you buy the equivalent amount of reed-switches and some pin-cables that have the "specific amount" of pins plus one for the positive battery terminal. Put your leds on the ring and start connecting each pin with a section, connect the positive with all of them. Then you go for the inner ring and connect the same amount of reed-switches in a circle and connect them all to the negative battery terminal on the one hand and to the equivalent section of the outer ring on the other hand, just have to make sure that each reed-magnet is connected to the section that beams at the front when this specific reed-switch passes the magnet. And if you want to make things easy, you connect the inner and outer rings with connectors.

SteveP102 months ago
stonioni8 months ago

and if this would be powered by electromagnetic induction? i did a personal version of the magnetic induction powered tail light, check out:


imagine to substitute the magnetic switches with coils, and put a magnet
strong enough on the fork... with a little capacitor for every led
section i could it's possible to achieve an amazing result.

Diyler (author)  stonioni8 months ago

that's actually a pretty good idea the only problem would be that it stops lighting when you stand still.

stonioni Diyler8 months ago
Yea, it's true. Would be very complex to add capacitors for every section... Now i'm testing this circuit, maybe you could be interested into: http://www.instructables.com/id/DIY-contactless-magnetic-bike-rim-dynamo/step6/

JoshuaF38 months ago

What do you mount the leds on? Aluminum strips? I was wondering if they would get corroded over time.

Diyler (author)  JoshuaF38 months ago

yes i used aluminum strips they don't corrode

dmuzial9 months ago

Can anyone mention how this holds up in wet conditions? Long commute to work that is not always dry.

Diyler (author)  dmuzial9 months ago

never had a problem it's just 3 volts.

adamrabbit made it!1 year ago

I love it :

I tried the first time with just tape... just to make sure I had it right. It worked!... and looked horrendous.. (first pictures)
My second try (second picture) looks much better! It's soldered this time... and has rear facing tail lights :D

Thanks so much for your inspiration!


Hey I see you've made it using led strips. Are the led strips sitting on an aluminum strip?

HumbertoRA1 year ago


excellent project!!! I will made it


adamrabbit1 year ago
This is excellent! How's version two coming? I'm really excited that I can do this myself!!
T Fergesun1 year ago
Any update on more simple and clear instructions, I really want to build this! and those Revo lights are just ridiculously expensive!
Could this be done with LED strips? http://www.ledsupply.com/r8030aa-white.php

Seems like it would require less wiring? They can be cut into 3 LED sections and wired to the reed switches... Are they too low powered?
Diyler (author)  IAmDougsInstructables1 year ago
Of course you can use led strips. I am actually into building one with led strips for my rear wheel, i just have to finish them. They lay around in my workshop since three months or so :D

When i finish them, i make a new instructable for Version 1.0
naught1011 year ago
What kind of output do those LEDs have? About 8000mcd?
kcoetzee2 years ago
Any idea as to when 2.0 is being uploaded? Keen to build one but will wait for the 'updated' model :)
Diyler (author)  kcoetzee2 years ago
Sorry that you guys have to wait so long. I hope i get it done in about a month or so, the problem is that i have not much free time to do it.

But i will upload the instructable as soon as possible!

flashfreak2 years ago
Hey, so glad to see this.. my wheels are too big to fit the bought version... anything new on your 2.0 version? I'm going to start building it in like 8ish days... cheers!
Wodanford2 years ago
This is so cool! Due to being handicapped, I am bound to a wheelchair. The revolights are out of my reach because of the tires having the wrong dimensions. This is something that comes very close to the revolights and I am so going to give this a try!
caniffis2 years ago
not sure if you have found your batteries yet, if not 23A 12v batteries are the ones to go for, very small and perfect for LED strips.
Diyler (author)  caniffis2 years ago
Thanks for the tip!!!!

i have tried it out and they last very long

version 2.0 will be ready in about a month.
cepi852 years ago
cool video!!!!
Diyler (author)  cepi852 years ago
Thanks :)
Could you give some more instructions? This is super cool but I can't really tell how you made it.
Diyler (author)  Adambowker982 years ago
hey sorry for the late reply, right now i´m building a lightrider Version 2.0

it will be ready in a bout a month or so, then i post a new instructable which should be much simpler to build
I think it's a great idea to use reed switches!
Diyler (author)  Mr. Gadgets132 years ago
hey thanks. yeah it´s simple and cheap thats why i´m use them.
wobbler2 years ago
You have complicated the circuit diagram slightly. It's not necessary to show the wires from the reed switches rotating around to the LED groups. e.g. the white connection from the reed switch could go straight to the LEDs with the yellow LEDs. It's not actually necessary to offset the wiring with respect to the reed switch in reality, you can just position the magnet to a different angle relative to the hub and the LED lighting point should consequently move also.

I presume as you don't have an on-off switch that you leave the bike with the magnet in a dead zone to stop the batteries wearing down when you're not riding it?
Diyler (author)  wobbler2 years ago
yeah you are right it´s a little bit difficult but it´s only a prototype

the on off switch is on the battery case look close

right now i´m into building a much simpler version with smd led strips so it´s less soldering and simpler to install

and a really detailed instructable so anyone can build it
wobbler Diyler2 years ago
No problem- Instructibles is all about prototypes and how they develop!

I would show the on-off switch in the circuit diagram also. Regarding SMD leds, you can find these cheaply in poundshop (or your equivalent) bike lights. You just have to use a sharp knife to cut though the chip connections and then wire straight to the LEDs.

Look forward to seeing your new improved mk2 version.
Diyler (author)  wobbler2 years ago
hey sorry for the late reply i´m not going to use sms leds alone. I will use led strips http://led-sa.co.za/wp-content/uploads/2011/05/20090917211852.jpg
Roshy10 wobbler2 years ago
You are right, the circuit diagram is overly complicated, but it shows how it is laid out in real life, which is helpful when trying to build this yourself
haemophilic2 years ago
Hi, Good job you have here. I wonder whats the outcome of your smd led strips version? Hope to hear from you soon.
Diyler (author)  haemophilic2 years ago
hey sorry for the late reply, the led strip version is doing well, i hope in about a month it´s done.

right now i have the aluminum rings done and the led strips are glued to them, next step is soldering and searching for a compact 12 volt battery.
jim_20002 years ago
I love it! I always thought the animation the revolights plays at stops would get annoying to drivers and cyclists.
Dranem2 years ago
Sie können über "http://www.instructables.com/id/Magnetic-Induction-Bike-Lights/", ein licht mit kein batterie sehen. Achtung! der rote led sind mit 1.7-2 V versorgt.

You can seen on http://www.instructables.com/id/Magnetic-Induction-Bike-Lights/, a light without baterie. Be carefull! Red LED are fed with 1.7-2V.

En tout cas, beau travail......

P.S. :
Here the way i use on my bike (in french, but lots of pics):
lio342 years ago
Hy !
Some news about your much simpler version with smd led strips ?
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