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Author Topic: Mouse optical sensor.  (Read 650 times)

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Offline danielsoyTopic starter

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Mouse optical sensor.
« on: October 27, 2013, 01:32:41 PM »
Hi all

Need help to find out optical mice model-maker  , that uses optical sensor  with quadrature output.

A picture of the mouse, would be nice too.

Or sensor ICs easy to find actually on the market  , cause Agilentīs HDNS-2000 , ADNS 2610 and the like, are not.


I īd   use them to measure linear motion

Thanks a lot.



Offline jwatte

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Re: Mouse optical sensor.
« Reply #1 on: October 27, 2013, 02:33:08 PM »
Do you absolutely need a mouse?

There are many microcontrollers with built-in quadrature decoders, and there are many quadrature encoders available to hook up to whatever rotating part you have.

Or are you looking for contact-less movement measurement, a la optical mice? I don't think those have quadrature output.

Offline danielsoyTopic starter

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Re: Mouse optical sensor.
« Reply #2 on: October 31, 2013, 06:08:02 AM »
Right Jawatte, a contact-less movement detector to attach direct to a gantry, to avoid backlash

Some optical mice, has ADNS-2030 or OM02-OM01 ICīs that get quadArture outputs.

Those ICīs, has 16 pins .

So, I may connect them right to PIC18fxxx.

Thanks for your reply.




Offline jwatte

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Re: Mouse optical sensor.
« Reply #3 on: October 31, 2013, 10:57:36 AM »
There are tons of contactless encoders.

Search Mouser or Digi-Key or whatever distributor for "optical encoder" and you'll find a lot of options. The simplest one is a disc with slots, and a reader with two LEDs, that provide quadrature output because of the spacing of the LEDs and the slots in the disc.

There are also nice magnetic encoders that can give you absolute readings, but that seems like overkill for your needs.

Offline danielsoyTopic starter

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Re: Mouse optical sensor.
« Reply #4 on: November 01, 2013, 01:03:01 PM »
Right, but some ICs or encoders are hard to find here , so I had thought about mice to scrap from.

browsing youtube, catched a couple of videos of mice , that seems has sensors with quad output.

Offline jwatte

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Re: Mouse optical sensor.
« Reply #5 on: November 01, 2013, 04:44:01 PM »
Where is "here"? Somewhere the mail doesn't reach?

Offline johnwarfin

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Re: Mouse optical sensor.
« Reply #6 on: November 03, 2013, 07:58:16 AM »
optical mice use photo arrays that are more like camera sensors. optical rotary encoders would best be harvested from a ball mouse. these are available for 10 cents or so at flea markets, less than a buck on ebay, and can occasionally be seen up in trees hangiing beside sneakers and other things with tails. there are at least two encoders on each pcb. three if theres a wheel.

Offline danielsoyTopic starter

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Re: Mouse optical sensor.
« Reply #7 on: November 03, 2013, 08:53:51 AM »
Thats right.

Was making tests with encoder wheels mounted on motor shaft actually , and got good results.

Here is how:

http://www.youtube.com/playlist?list=PLMAUjAzkmX20h92jUBkbBYT4HawlYL-4f

But am looking to attach an optical detector to a gantry, to reduce backlash, and its easier for me to scrap them from
older ps/2 mice.

Some sensors give a serial output to be decoded, and others deliver direct quadrature incremental pulses.

Thanks for your reply.



 


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