Teardowns - Electronics Blog

Archive for the ‘Teardowns’ Category

World’s Smallest Stepper Motor with Arduino and EasyDriver


This little wonder of electromechanical engineering came from inside a laser diode sled of an HP CT10L Bluray drive I’ve opened some time ago. The device on the picture consists of several parts, all easily fitting on a dime coin: a bipolar stepper motor with lead screw, a linear stage, a lens, and even an end position sensor (I’ve yet to make use of the sensor though). The entire assembly is only 14mm x 9mm x 4mm. This post is about making this tiny motor move. Keep reading! Read the rest of this entry »

Blu-Ray Teardown – HP CT10L BD-ROM / DVD Rewriter

HP CT10L BD-ROM/DVD R/W drive , ready to be disassembled

HP CT10L BD-ROM/DVD R/W drive , ready to be disassembled

Even though it takes me much longer than I anticipated, I’m still collecting parts for the laser cutter based on broken CD/DVD/Blu-ray drives. This time I decided to open a Blu-ray drive for the first time, never had a working 405nm laser diode harvested from a Blu-ray drive before.

This time the broken drive teardown is performed on an HP CT10L BD-ROM/DVD Rewriter drive (HP part number HP nPC P/N:491775-6CO). This is an older drive (manufactured in October 2008) and I expected it to have some useful parts – my experience has been that the most useful for disassembly parts are usually from 2003-2008 time frame. I was surprised to find not only two useful laser diodes inside but also an interesting part I did not expect to be in there … Read the rest of this entry »

DVD teardown – Toshiba TS-L462 CD-RW/DVD drive

Toshiba TS-L462 CD-RW/DVD drive ready to be disassembled

Toshiba TS-L462 CD-RW/DVD drive ready to be disassembled

I’ve been using old computer parts for ages now, have steppers removed from 5.25″ floppy drives that should belong in a museum at this point. But more recently I’ve started digging into DVD drives, more specifically, the burning kind, DVD-R/RW, for laser diodes, as evidenced by my other posts here. All with an eye on cutting stuff with them on a CNC rig. So, in my search for a perfect laser diode donor drive I’ve opened some 10+ types of drives and I am documenting the teardowns just in case I need to look at the parts and know where they came from. I though it may also me useful to post the pictures for other people to see. If you’re looking for a high-power red laser diode and have a Toshiba TS-L462 drive in front of you, I hope this post will save you a little bit of time because … Read the rest of this entry »

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Recent Comments
  • Mark Needham: Hey mirceboy, I am using a toggle switch, SPDT center off. I will manually start/stop, or a micro...
  • Jeff R: Can you please give me some details about how to reformat the code from milliseconds to microseconds so I can...
  • admin: You would have to reformat the code to start using microseconds instead of milliseconds for the time...
  • Jeff R: Thanks for posting, this was exactly what I was looking for. I’m using the Sparkfun SM-42BYG011-25...
  • mirceboy: Hello, this is perfect and im new with arduino, can you please tell me if its possible to change the code...
  • admin: That sounds great! Sorry I did not have a chance to follow your previous comment. But in general terms this is...
  • Mark: Hi Sir. Just dropped by to report that I have made the unipolar stepper motor rotated clockwise and...
  • Mark: All right sir I got it. Like any other post in some websites, I have found out that pins 5&6 (which are...
  • admin: If we are talking about unipolar (not bipolar, as in the title of this post), then yes, you may have the 5-pin...
  • Mark: Hi Sir it’s me again Mark. Just wanted to ask another one thing sir. Just wanted to ask if there are such...
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