Picture of Wind Generator from old scanner [updated]
I'll show you how to recycle an old scanner into an amazing wind generator.
You need it, clean energy!
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Step 1: What you need?

What you need:

- Old scanner
- Rectifier diodes (I used 8 1N4007)
- 1000uF Capacity
- LM7805 (voltage regulator for 5 volts)
- PVC pipe (for blades)
- Plastic square (for tail)
- Aluminum pieces (i used alumynum, but you can use what you want)

Step 2: Recycle old scanner

Picture of Recycle old scanner
Those scanners should have a mini fluorescent tube that can be still used in your projects, some electronic parts and the most important thing, a good stepper motor.

In my case i got a 4-phase stepper motor :)

Step 3: Building the rectifier circuit

Picture of Building the rectifier circuit
Since stepper motors generate alternate voltage you need to rectify it. Each phase must be rectified with 2 diodes, this is, 8 diodes.

The output of the rectifiers will be stabilized with a 1000uF capacity and a 5v voltage regulator (LM7805 in my case).

Attach some connectors to allow charging different gadgets. I added a female USB connector since my phone and mp3 use USB to charge.

Note 1: this motor can generate easily more than 5V, but i only need 5V by the way.

Note 2: there is an issue with the USB female connector. You need to follow the USB specifications in order to make it work. USB2 charging needs two 15KOhm resistances on the data buses to work properly. Check comments on this instructable for more info: USB charger

Note 3: I used this free software for circuit simulation: QUCS
It lacks of some components right now, but it's great after all.

Still can't get usb charging on my phone. My mp3 charge ok, i think it's USB1.

Step 4: Build the blades

Picture of Build the blades
I made the blades using the Chispito instructable.

Check it now!

Step 5: Build the structure

Picture of Build the structure
I don't have plans of the structure, since I thought it while cutting it :)
Take my photo as help.

I must rebuild the rudder, since it's too small.
I'll post pics of a new one soon
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gilles996 years ago
your third picture have a mistaque with your graetz
paziek gilles992 hours ago

You mean he put capacitor rated for 5V before regulator, while he also claims that source can provide more than 5V?

tomtortoise4 years ago
yo which pulley should i get and are there metal ones??? and do i need to remove the pinion gear and how.
javotech6 years ago
Hi there.
Can you tell me what part it is u used for making your turbine pivot.
There are some bearings in it i see.
Greetings from Belgium
DeanC9936 years ago
sorry i keep commenting but is your stepping motor MITSUMI M42SP-4NK LOT NO.T G 6117 if so i af the exact same motor as you is it from lexmark?
The make and model of motor shouldn't make a difference, provided that it's a stepper motor, which is rated to have approximately the same output. What it comes out of is irrelevant.
 I have made one with a PM55L-048 Stepper Motor took from an old HP Deskjet printer. But I need a rectifier circuit for my stepper because it is a unipolar I think with 5 wires coming out from it. Please Help! Thanks.
randommate5 years ago
 hey neat instructable.  i have been trying to think of something of this size as well.. any chance you could update with more info on the range of output your turbine can supply? cheers.
mrjtwill5 years ago
how did you build the hub so you could attach the blades?
The hub/meccano pulley has holes for meccano screws already in it
how in gods name did you get that fiddly gear off of the end of the stepper motor
if you want to light a bulb then your best bet is to put a charging circuit and a battery so your light dose not flicker if there is no wind
it he meccano gear this one? =D
wind part.JPG
Is this metal or plastic? I found the plastic one to break very easily, it would only take a light wind. This one is made of the same plastic all the new meccano kits come with, it chipped away and is cheap enough that I would not reccomend its use.
A3 windgen.JPG
metal its called a "meccano 19b"
its metal look it up in ebay its a 19b part i think google and macth the pics ok
Is the gear metal.?
emdarcher6 years ago
where did you get the old scanner?
slinger146 years ago
could you use a zeiner diode to by-pass the 7805 when the voltage is under 5 volts?
DeanC9936 years ago
hi could you just hook up a light to the generator i have the same generator as you and i only want to light a bulb of it o you know how i could do it?
DeanC9936 years ago
(removed by author or community request)
clark DeanC9936 years ago
thats what he is using, so i'd say yes
ciaagent6 years ago
Hey everyone, I'm still working on mine, got some big gusts and broke 2 of the blades... topped out at .005V... I must have fried a diode during soldering. So I fixed the blades and never put it back up (bad move) and I dropped the blades and broke one of the previous broken ones again, so here I am fixing it... anyways, if you REALLY want to follow me, head on over too where I will post about it.
garyuou6 years ago
Hi, everybody! New energy industry is developing at high speed, and it does have a bright future. Do you guys realize this? If you interested in wind turbineor need any information, you can contact me.
ciaagent6 years ago
Update on mine, Bad news. We got a windstorm and I seen it going too fast, so I thought I'd take it down. I go out there and lift the pole out of the ground and the blade slowly moved forward an inch, then tilted down. I then though that I didn't feel like being decapitated, so I dropped the pole and ran. As I watched it fall, I realized what a bad mistake that was. It hit the garden and broke two blades off. Luckily, they were on opposite sides so it still works. Good news: I finally got something for a bearing, and came up with a design for the thing to transfer electricity down the pole without wires. I will flatten copper pipe and use some kind of brush to rub them. So this is my update, and its a long one. Stay tuned for more.
ciaagent6 years ago
Hey everyone, update on mine: I finally have it up temporarily, (its in an underground sprinkler hole with broks around it and no electronics hooked up) anyways, here are some images: I know it leans, but its only temp.
I hooked up the electronics, I only get .004V. If i spin it really fast by hand I can barely get 1V. Looks like I need to fix something. When I was soldering last night, I got a drop of solder on one of the rectifier diodes so I'm thinking that killed it.
Of course there would be a wind storm after I put it up... I guess I should move the cementing the pipe in the ground to a priority, luckily, the hole it was in kept it from falling down completely. I am getting good RPM's out of it, I do not know the voltage yet as I don't have the rectifier circuit hooked up.
*sorry, I meant bricks, not brocks.
danlab6 years ago
I have a stepper motor which has 5 wires, black being a common lead, does anyone know how to rectify it, if it is possible? down below is a picture of the wiring diagram that came from the manufacturer p.s. Great Instructable, just wish I had an old scanner I didn't need
IMG_1958[1](2272x1704) 1 MB
Try this
Get a hold of an old HP inkjet printer they have some nice motors. 500, 600, 700 series (and probably most any of their inkjets). I've gotten some nice 5 wire stepper motors out of them. There's also a nice DC motor which would work well.
I just took apart a printer, and one of the stepper motors is almost exactly like that one (for some reason there were two motors, and it was just a plain printer without a scanner). I will use the diagram and try to figure out how to rectify it. If I do, ill post it
Most printers that I have taken apart have 2 motors. One for moving the paper through and another for moving the print head. HP 500, 600, 700 etc series printers have a really nice stepper motor for moving the paper and a really nice DC motor for moving the print head.
my motor came out of a HP scanner it has 6 leads 2 for separate coils should i make a 6-way rectifier or is there a better way
thanks that was a great explanation but any idea how i would know which wires are the right ones on the coils?
look at the scanner circuit board, maybe some wire wasn't connected to any component. or use a multimeter (on ac). good luck!
Nice work
Im going to use this with my newman engine, : v)

Bill - N.e.R.d. Group
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