DPRG mailing list archives: [DPRG] encoder submission

Tue Sep 25 21:41:23 CDT 2001

I've got Eagle files for an quadrature encoder board (using a split phase
encoder disk) if your interested.  I tried my hand at producing some boards
Sunday evening.  Worked out pretty well, just have to get a really small
drill bit to drill those holes for the Hamamatsu photosensors.  BTW ,the
boards are surface mount and single sided (except for the photo sensors and
lead wires).

Jeff Birt
Halfway, Missouri

----- Original Message -----
>From: "Dan Miner" <miner at centtech.com>
To: <dprglist at dprg.org>
Sent: Tuesday, September 25, 2001 1:15 AM
Subject: RE: [DPRG] encoder submission

> > From: David P. Anderson [mailto:dpa at io.isem.smu.edu]
> > Sent: Monday, September 24, 2001 10:19 PM
> >
> > I think Kip's stuff is maybe Eagle (?).
>
> If it is in Eagle, I suggest posting the Eagle files.
> The free version of Eagle can view any size board and
> can create 2 sided boards up to about 3" x 4" (or so).
>
> Then, if you want other file formats, by all means, do so.
>
> FYI - After roughly 2 years of doing practically nothing
> with robots, I've finally gotten going again!  The next
> contest is this coming weekend, right?  (Just kidding -
> there's always next year.)
>
> I've completely re-written my motor control code using
> Larry Barello's positional PID method with sign-magnitude
> PWM.  (BTW - It is now clear to me that locked-antiphase
> is indeed better from the point of view of code reduction.
> My code has lots of comments and conditional compiling
> switches to use locked-antiphase if I want to try switching
> my hardware too.)
>
> I haven't tried to run it quite yet - 'cause I'm still
> writing portions of it but I should be ready to start
> debug any day now...
>
> - Dan Miner
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