Have you ever wonder what is inside those optical drives that can be used ?

When I was a kid it was really interesting for me to know ways to recycle parts.

Even now it is something i find fun and interesting.

Guys this has been nominated for treasure contest so if you find it useful then do vote for me .
There are two Top reasons to do it.

  • It saves a lot of money and get new parts.
  • It Improves the knowledge of things around you.

Today I am gonna show you how to salvage an old Optical Drive. May it be DVD/CD ,both have most things in common, we will learn about each part and how to take them apart.

Watch the video in case you have less time.

Also i am giving away some cool laser engraved key-chain so do have a look at my channel.

And also Subscribe to my channel to view awesome stuff.

Step 1: How to Open the DVD Drive



Start by unscrewing the four screws that hold the DVD /CD drive.

Be careful as the chassis is too sharp.

It can cut your fingers.

I had been the victim
rather should I say, I had signed with my DNA

Once the Chassis is opened the next job is to unplug all the ribbon cables from the main board .

Step 2: The DC Motor

The DC motor is held by some clips ,slightly remove the clip to get access the board of the dc motor.
Before the removing the motor take care to remove its ribbon cable.
While removing the Motor it might be stuck to a pulley with a rubber cable,remove that to take it apart.
The board has three part that can be reused .

  1. A 5V DC Motor
  2. 1 LED
  3. 1 Push Button

Function of this part

This motor combined with a pulley and gear (rack and pinion ) makes the eject mechanism for the drive. In short the the ejection and retrieving of DVD drive is controlled by it .

Step 3: The Brushless DC

The next thing to salvage is the Brushless motor.
Gone are those time when getting brushless are tough.
Lots of DVD drive are useless these days so getting a lot of brushless motor is too easy.

What is a brushless motor ?
These motor in the pictures in the pictures are of those brushless that mean these motor have the rotor as permanent magnets and the stator

Function of this part

This is the motor that spins the CD or DVD Since high speed is required for reading quickly the brushless motor is chosen for the purpose.

Project you can try with the motors



Step 4: The Stepper Motor and the Slide Draft

After freeing the BLDC we are left with the drive mechanism from which we get to extract a stepper motor and the slide mechanism .

The stepper motor has just two screws to me unscrewed to be made free .
And the shaft by turning a knob at the bottom of the drive.

There is also the laser module which we will extract soon.

Function of this part

The Stepper motor is also called the sled motor . This motor causes the slider to move in a horizontal direction.With this stepper motor and the brushless motor, the optical drive reads the data in a DC or DVD .

Projects you can make



Step 5: The Laser Diode

After removing the shaft left is the laser module in the slider .
The laser is held with a glue .
Try to cut the glue to get access to the diode.
You can try a hot air gun, but I don't have any still so I could not use it.
Do tell me if it is possible.

Function of this part

The laser forms an integral part of the optical system which makes it possible for the DVD drive to read the data.

Projects you can make


Step 6: The Magnets

Neodymium magnets are in the optical lens to use for focus I guess as it had coil also making an EM - field .

What is Neodymium ?

Neodymium is a chemical element with symbol Nd and atomic number 60.

Neodymium is used as a component in the alloys used to make high-strength neodymium magnets—powerful permanent magnets.

Function of this part

It is used to focus the beam of laser along with a coil making an EM Field

Step 7: The Optical Lens

Lastly,we take apart the optical lens from the drive.
The lens is a small biconvex lens.

Be careful while taking apart the lens as it might be damaged if not handled with care.
I crushed the glued part first (plastic),making the glass free and then taking it apart.
use some tissue to kept it scratch less .

Function of this part

The lens is just to focus the beam of the laser.

what next ?

I will show what you can do out of those drive parts .

Next will be coming soon so stay subscribed :)

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Youtube : https://www.youtube.com/c/PrajjwalNag

<p>Wonderful tear down. Thank you.</p>
<p>M-M-M where can I get an old DVD? I am jealous of those magnets!</p>
You can get it from pc service shops for free
You can get it from pc service shops for free.
<p>it is helpful </p>
A make this 7y
<p>Thanks for this, it'll be very helpful</p>
<p>Interesting stuff... <br>A fellow down the road from me dismantled his laser drive and is now blind in one eye. Please be ultra careful folks... Do not to look at a laser and switch it on! The only issue I can see with using parts from a laser drive to build an engraver is power. Almost everything you try to engrave at any reasonable speed needs more power than you can get from a CD drive laser but the motors alone, make this method and the instructable one to file away for when you need specialised motors. </p><p>Thanks for taking the time to describe your dismantling techniques.</p>
<p>Great tips and tricks on cannibalizing parts...after my own heart on re-using stuff. One thing most people don't know is the 'eye' of cd/dvd reader are all the same no matter how much you pay for it. </p>
You write &quot;neodymium magnets ... is used to focus the beam of laser along with a coil making an EM Field&quot;. Sorry I dont belive that. Light is usually not influenced by EM field due to the principle of superposition. In some materials an EM field may influence the refraction index and thereby influence light, but I don't think that is the case. These magnets are ofen used for mechanical tasks like position control. I suppose that is a much more likely explanation for having these magnets at your laser.
<p>While you are correct that the EM field itself is not influencing the light, the EM field *IS* positioning the carrier for the laser LED in relation to the focusing lens therefore those magnets and the EM field *IS* focusing the laser relative to the lens... Very similar to how a hard drive positions the read heads on the platen... You almost thought it all the way through but missed the last connection to understand the whole.</p>
<p>it using it for focusing by adjusting laser diode lens up and down.</p><p>this video show how its work</p><p>https://www.youtube.com/watch?v=fLfUEmDTKVQ</p>
<p>I wish I could find someone near me like you, that takes electronics apart. I have a bunch of electronics (old computers, printers, scanners, I think I even have an old vcr). I can't give this stuff away. I have a plasma tv I bet you could even find parts to use from. Most people are about buying instead of taking things apart. This way they don't have to store all of it especially for long periods of time.</p>
<p>Try posting these things on Freecycle, EVERYONE should be a part of their local Freecycle group. I always post on my local Freecycle for broken/outdated electronics wanted. I get 2-3 lcd tvs every year that only need $2-$3 worth of Capacitors replaced. I get tons of desktop pc's ( some are newer and only require a fresh windows install) and about 25% of them get fixed/upgraded then re-Freecycled</p>
<p>I'm a teacher in Greenville, SC, and I beg people for this stuff. I teach an intro to engineering class to middle schoolers, and in 7th grade one of our main activities is taking stuff apart and seeing how it works. I've resorted to Ebay to buy old-style computer mice with balls and telephones with cords. New tech is all electronic and too small to see! Geekrex, the next kid who takes apart a CD player will use your Instructable, and you have my vote!</p>
<p>@sbrown9578</p><p>If you are in Middle Tennesse or North Atlanta, I can give them a good home.</p>
Have you tried sticking out the front next to the road?
<p>so what do you do with the part's after you take it apart </p>
<p>What <em>can't</em> you do with all those parts after you take it apart :)</p>
<p>I've used a cd-rom drive motor to make a gyroscope and for an RC Plane.</p>
Gyroscope: I'll post an ible on it when I get home. Don't expect much, I just wanted a better toy to explain gyro precession to my little ones.
<p>Yes, Elizabeth there are a lot of us modelers on here, please share your gyroscope ideas.</p>
<p>Would you like to share?</p>
<p>I did a mini CNC writer with 3 stepper motors, 3 easy motor drivers and a arduino UNO (plus the trays from the cd-drivers).<br>it was very fun to buid and it actually worked fine, but not great. The motor that was supposed to make the vertical movement wasn't strong enough to lift all the stuff attached to it. <br>There are several tutorials on how to of it, but I used Tinkernut's one (seen on youtube), because of the clarity of the instructions . </p>
<p>Great job!!..</p>
<p>Very Nice.. Good Job. I'm glad I read this.. Who doesnt have a dozen old useless dvd drives in there work shop. I actually had a crate full..lol. perfect parts source for Arduino experimenting.. Miniature animatronics, modeling, prototyping in miniature.. fantastic.. </p>
<p>wow ,I'm sorry but that now how you salvage a dvd drive ,you broke most of the parts ,even small ribbon cables ,,just to get a couple of motors , You should google &quot;making useful things from dvd drives &quot;</p><p>results = </p><p>https://www.google.ca/?gfe_rd=cr&amp;ei=NAlVVujwLYaN8QeB15LoCw#q=making+useful+things+from+dvd+drives+</p>
<p>Thanks, this is a very nice instructable! I am curious to find out if the brushless motor can be used in an RC airplane :)</p>
<p>Now, lets see you put it all back together...that would be impressive. :)</p>
<p>I didn't want to take apart an old PC DVD burner but to *reuse* it as an external device for my laptop. Too bad I haven't found a dual USB (burner needs more than 5V) to SATA adapter cable that works for regular CD/DVD drives (i.e. not the slimline models).</p>
<p>If you do not need the face of the unit, stick a flat screw driver in the front of the tray, and pry. It'll snap right off, and then you can pop the face of the unit off before disassembling it. I've found that to cut down on my disassembly time significantly.</p>
<p>I do understand what you mean about disassembling things for the parts. I started out doing the exact same thing decades ago. And I still do as well. But not just electronic assemblies. I literally remove everything from ever item I no longer need and nobody else wants as well. And that does include hardware. If you organize all those parts, you will shortly have a nice stock pile of reusable parts and easy access to them quickly as well. So good post. Thumbs up!</p>
<p>Me too. I picked the habit up from my grandfather. He had a cabinet about 8'x6'x3' (HxWxL) with shelves full of coffee cans loaded with salvaged hardware at his shop. His garage was like a parts warehouse. We almost never had to buy a bolt, nut, screw, etc.<br><br>If you look at that those motors, hardware, brackets, as money saved... you're rich in a way. One mans trash is another mans treasure. Not to mention the melt down value of all of it if ya ever have to leave it behind and can't find a buyer.<br><br>Those guys that own those huge junkyards are worth millions in scrap metal alone. But an intact part can worth so much more than an ingot. Especially when that part is no longer manufactured.</p>
<p>&lt;grin&gt; Crystal set at 11, scrounged cast-off radios from area shops, learned a good bit for two years, discovered opposite sex, shelved electronics for 7-8 years.</p><p>Spent a life time earning my livelihood in the industry- destruction is an educational tool! </p>
<p>Absolutely , these comes in hand :D</p>
<p>The brushless motor and eject mechanism make great animation controls for model railroad layouts. Use it to move a truck back and forth in an area under construction.</p>
Be sure and keep that slider with the stepper. I didn't pay attention and lost mine. now I have a stepper and no slider that matches the thread.<br><br>I'm slowly parting out dead PC components too make a small 3d printer.
<p>You could use a block of material with a hole to match the thread. Then drill a hole through the center for a screw with the point filed down to match the profile of the thread. The point of the screw will follow the thread. Accuracy is your friend.</p>
<p>Hey, I'd be curious in hearing about your 3d printer project. I'm interested in doing the same thing. Are you following an instructable? Thanks. </p>
gelstronic here on Instructables has a nice one. And yes, geekrex is right about the build volume. Its small, but its a good way to learn.
<p>Don't make a 3d printer with that the workspace is way low </p>
<p>i have those slider specially for trying on a CNC mini ,let see how does it goes</p>
<p>I work with a scrapyard that dismantles computers &amp; electronics. They have pallet sized boxes of wires, computer cards &amp; motherboards, telecom, old stereo equipment, flat panel displays, DVD drives and pretty much anything else electronicswise. </p><p>I can buy pretty much anything there, except hard drives, and if anyone wants a bunch of something ( box of 50 DVD drives anyone?), if someone makes it worth my time, I can get it and get it shipped out.</p>
<p>I spend a fair deal of time dismantling electronics, and for now I am just saving the useful parts up in produce boxes as I get them. I take what I want out, and stow the stuff I don't need atm. If you know of any buyers for such parts, or want to buy something, hit me up. <br><br>I just started saving this stuff again in bulk. I used to salvage it all, but I figure it's more valuable as what it currently is than as melt down scrap so I am trying a different angle with the stuff. <br><br>I have small motors (quarter bucket), laser diodes (15-30 atm), mirrors 15-30 atm), platters (apx. 200), magnets (not sure), chokes (about half a bucket full), prisms (not sure), lenses (about 300-400), rubber bushings &amp; rubber rollers (a drawer full), gears (about half a bucket full). I've got a big box of lengths of small wires &amp; ribbon cables too. The list goes on. I'm not sure what all I have at the moment in exact numbers, I haven't been keeping an inventory of it all. I'd be delighted to sell them all as lots to make space for the incoming stuff. <br><br>If anyone is interested in buying stuff as a lot, contact me, and we'll figure out the details. If I don't have it, I'll keep an eye out for it too.<br></p>
<p>nice instructable!</p><p>though to make a laser pointer you need a DVD-R drive </p><p>also, red lasers write data they don't read it</p>
<p>What reads the data if the red laser does not!?</p>
<p>According to the CD players that I have taken apart (similar to the DVD player), there is a five-sensor photodiode that reads the reflected laser light. One is the main data reader, and the other four are arranged around the main reader to confirm and keep the laser pointed inside the track, If one or two of the sensors misses the signal, then the MPU will step the head motor to recenter the track and keep reading. I have watched a CD player operation and you can see the head being stepped as the CD is played. </p>
<p>infrared laser</p>
I'm pretty sure you will find that the red visible laser is for dvd's and the infra red is for cd's.
<p>thanks man,<br>if you like it vote for it :D</p>

About This Instructable




Bio: So basically i am a crazy person, who loves to think the most odd way ever possible,who makes what he thinks and also let ... More »
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