Re: Wheel encoders

["Daniel Chia" <danstryder01@yahoo.com.sg>]

Hi,
    Thats what i was considering.. And i do intend to quadrature decode
them. However more resolution would be ideal for smooth PID control..

As for inkjetting it.. hmm sounds possible. shall have to see if can find
suitable transparency sheets

------------------------------------------------------------------------
Daniel Chia

"Genius is one percent inspiration and ninety-nine percent perspiration."

     - Thomas Edison

E-mail: danielcjh@yahoo.com.sg
MSN: danstryder01@yahoo.com.sg
------------------------------------------------------------------------

----- Original Message ----- 
From: "frederick chang" <frdchang@uclink4.berkeley.edu>
To: <micromouse@cs.rhul.ac.uk>
Sent: Thursday, July 01, 2004 16:42
Subject: RE: Wheel encoders


> could you just print them out on an inkjet and use a packaged led and
photodetector to read them?
>
> if you print them out you can up the resolution using photoshop or some
other sort to the min[bandwidthof(CPU),bandwidth(photodetector)]
>
>
> cheers,
> fred
>
>
> -----Original Message-----
> From: owner-micromouse@cs.rhul.ac.uk
> [mailto:owner-micromouse@cs.rhul.ac.uk]On Behalf Of Daniel Chia
> Sent: Thursday, July 01, 2004 1:16 AM
> To: micromouse@cs.rhul.ac.uk
> Subject: Wheel encoders
>
>
> Hi,
>     I'm in the process of designing encoder disks for my mouse. Right now
i
> am intending to use disks i salvaged from an old mouse. However, the disk
> only gives me about 36 ticks. It would be great if i could get more..
>
>     Anyone has any advice on making photo-interrupter wheels? I'm toying
> with the idea of using some transparencies with the pattern printed to it
> sandwiched together.. Anyone has any comments? I saw nice disks on David
> Otten's Mittee 7 and 8, must say they look nice and well made.
>
> ------------------------------------------------------------------------
> Daniel Chia
>
> "Genius is one percent inspiration and ninety-nine percent perspiration."
>
>      - Thomas Edison
>
> E-mail: danielcjh@yahoo.com.sg
> MSN: danstryder01@yahoo.com.sg
> ------------------------------------------------------------------------
>
>