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Author Topic: Optical Pickup System  (Read 1532 times)
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pumper
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« on: March 29, 2013, 10:26:38 10:26 »

hi
I want to know anybody has any information about interfacing an laser head of a CD-ROM/writer or DVD-rom/writer.
I searched alot and found some datasheets and articles but no schematic or clear explaination.
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koseyel
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« Reply #1 on: March 29, 2013, 02:54:33 14:54 »

hi
I want to know anybody has any information about interfacing an laser head of a CD-ROM/writer or DVD-rom/writer.
I searched alot and found some datasheets and articles but no schematic or clear explaination.


I don't know if that'll help, but go on Instructables and search "Micro LASER Show with a CD Lens Mechanism". They use the focusing mechanism of a CD drive to create a two dimensional laser projector (using Arduino).
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solutions
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« Reply #2 on: March 29, 2013, 07:53:49 19:53 »

What are you trying to do?
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pumper
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« Reply #3 on: March 29, 2013, 07:59:39 19:59 »

the site you mentioned is not free for downloading pdf
if you have it please upload it here

Posted on: March 29, 2013, 07:55:56 19:55 - Automerged

I'm trying to make a  accelerometer.
I googled and found alot of articles about it but no circuit.
or something that tell me how to interface to DVD PUH(Pickup head)
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koseyel
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« Reply #4 on: March 29, 2013, 11:08:44 23:08 »

the site you mentioned is not free for downloading pdf

I'm really surprised that one have to register to download the pdfs. A few days ago I downloaded some pdfs just clicking the download button. It must be something new.
I'm sorry but I don't have the above mentioned file.
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DreamCat
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« Reply #5 on: March 30, 2013, 04:32:23 04:32 »

Hi pumper,
you could search the service manual of CD or DVD, some manufacturer provide schematic.
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May be I expressed the wrong meaning, sorry for my bad english. Please correct it for me if you can.
pumper
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« Reply #6 on: March 30, 2013, 05:45:33 17:45 »

i searched for service manual with circuit .but no success.
any body any help?
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solutions
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« Reply #7 on: March 31, 2013, 05:36:44 05:36 »

Again - what are you trying to do?
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pumper
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« Reply #8 on: March 31, 2013, 09:20:26 21:20 »

I'm trying to make a  accelerometer.
I googled and found alot of articles about it but no circuit.
or something that tell me how to interface to DVD PUH(Pickup head)
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solutions
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« Reply #9 on: March 31, 2013, 10:29:48 22:29 »

You know, if you are doing something unconventional, it helps EVERYONE to know what you are trying to do, especially when an accelerometer can be bought for under $1.

Again, third time - what are you trying to do?

Post the articles - you haven't shared ANYTHING yet since you've been here that I can see, so you can at least post the stack of reference material you've found so far on this bizarre implementation. Members can learn from it, and gain insight in what you are trying to do, vs saying "accelerometer" all the time. What's the application, where does the information go, how sensitive does it have to be, what kind of noise environment and on and on and on if you don't define the app?

This site is not about helping just an individual, it's for everyone to learn something along the way. It's for someone in the future to have insight on a way to do something when they do a search. Otherwise we'd all be PMing each other (forbidden by rules for a reason) and nobody would know anything new. Even the requests for papers are for EVERYBODY, not just the requester.

Once we see what you are trying to do, we can stop guessing and try to provide an answer. Otherwise, you'll remain at the dead end you're at now.

The first hit in Google says how to make an accelerometer with a pickup. Is this what you want: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5229966&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D5229966  ?

Or do we have to keep guessing?
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pumper
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« Reply #10 on: April 01, 2013, 07:36:12 19:36 »

for an example this file attached.
and i must say this is what i want to do for knowing this technology and then use it for other stuff
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« Reply #11 on: April 02, 2013, 12:33:04 12:33 »

Interesting. Do you have references 8-13 that you can post?
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pumper
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« Reply #12 on: April 02, 2013, 02:34:57 14:34 »

Hi solutions
I cant find these refrences :
may you upload here?
Development of an optical accelerometer with a DVD pick-up head
Simultaneous detection of translational and angular displacements of micromachined elements
Interferometry with optical pickups
Fast one-dimensional profilometer with a compact disc pickup

« Last Edit: April 03, 2013, 02:53:07 14:53 by pumper » Logged

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solutions
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« Reply #13 on: April 02, 2013, 10:18:36 22:18 »

Suggest you request them over in the papers section and bring them into the topic as a hidden posting. Don't put your material out in the open. I'm pretty sure this topic will wake up after people read the material.

Would you mind rehosting to mediafire? Your host is demanding an upgrade to Firefox, which spells disaster as they only seem to go downhill with every new release. thanks
« Last Edit: April 02, 2013, 10:23:09 22:23 by solutions » Logged
pumper
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« Reply #14 on: April 03, 2013, 02:50:54 14:50 »

I wanted to upload them here but the host dont let me to upload more than 1 MB   
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« Reply #15 on: April 03, 2013, 11:26:08 23:26 »

Good thing - you're not supposed to host copyrighted stuff here
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