[team2039] Re: for tonights meeting
- From: Mark Amber <balloooza314@xxxxxxxxx>
- To: team2039@xxxxxxxxxxxxx
- Date: Tue, 27 Jul 2010 13:19:02 -0500
Yes it does have resolution more than 1 per degree, when it spits out a
value in java it is scaled to degrees, but it ends up being more like
360.125 I am not sure if they are all significant digits because I have no
idea of the precision of the encoder.
What I am saying is we should know how many clicks per rotation of the
wheels (the swerve action not the wheels that accualy move the thing)
because the joystick gives out a number in degrees (from -180 to 180) and if
we have the wheels be on a 360 degree scale the pid will work.
On Tue, Jul 27, 2010 at 1:13 PM, Adam Czerwonka <Adam.Czerwonka@xxxxxxxxxxxx
> wrote:
> That information is in the spec, I believe that it should also be written
> into last year’s software. Worst case we’ll look up the sensor info
> online. I’m sure it’s got resolution better than 1 per degree
>
>
>
> *From:* team2039-bounce@xxxxxxxxxxxxx [mailto:
> team2039-bounce@xxxxxxxxxxxxx] *On Behalf Of *Mark Amber
> *Sent:* Tuesday, July 27, 2010 1:05 PM
> *To:* team2039@xxxxxxxxxxxxx
> *Subject:* [team2039] for tonights meeting
>
>
>
> Does anyone know how to find out exactly how many encoder clicks are in one
> rotation of the wheel, I think that is an incredibly important part of the
> program, I want it to be once we have one full rotation we can divide that
> into 360 steps, and it needs to be extremely accurate, we cannot go by
> looks, because every time the wheels spin it would just get that much more
> off, so what ever error we have, say it is the length of this --> u on your
> computer monitor it will be uuuuuuuuuuuuuuu off after 15 rotations.
>
>
>
> I was thinking we could put an encoder on the swerve action and spin it
> around 20 or so times, so the a few millimeters of error would be 20 times
> less significant, then we could divide by 360x20, instead of 360.
>
>
>
> Is my thinking correct, does anyone have better or more proven ways to do
> this?
>
> --
> »»Mark Amber««
>
--
»»Mark Amber««
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