On Thu, Sep 23, 2010 at 9:18 PM, Jon Elson <[email protected]> wrote:
> Don Stanley wrote:
> > Hi All;
> > What conditions do the JP1 and JP2 set?
> > I need 0-10 Volt from the DAC, preferably using all eight bits.
> >
> As shipped, the jumpers allow SSR1 to enable positive outputs, and SSR2
> enables negative. With both SSRs off, output is set to zero.
>
> If you want positive output when either SSR1 or SSR2 is on,
> remove JP1, and put JP2 to the middle
> position. If you think of the 4 pins as a "T", then the jumper goes on
> the vertical
> bar of the T. This way, SSR1 and SSR2 enable and control the direction
> of the
> spindle, and the DAC only provides the speed.
>
>
> If you want the DAC totally independent of SSR1 and SSR2, then remove JP1,
> and move JP2 so it is closest to the JP2 marking.
>
> You always get the full 8-bit (0-255) range of outputs.
>
> Jon
>
Thanks, that fixed that.
The other 10% step problem is; motion.spindle-speed-out is passed
through scale.0 and mux2.0 to correct for different gears of the
spindle drive. One of those is apparently messing with the data but
it looks good in Hal Show.
I'll test that tomorrow and pass it on.
Unless you (or someone) already know the answer and solution?
Don
>
>
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Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
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