--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> Hi Bob,
>
> That sounds like a hardware problem.  All it should take is power-up, then
> DAC0=2000, and JP11 DAC0 should change.  If not, then there is a hardware
> problem.  Note that if you have an axis enabled and it is writing to the DAC
> then it will immediately overwrite any DAC command sent from the Console, so
> make sure all axes are disabled when you perform the test.
>
> Is the Kanalog LED on?  One common problem is that KFLOP+Kanalog draws too much
> power to be USB powered.  You must remove the KFLOP J3 jumper and supply
> external +5V.
>
> Regards
> TK
>
>
>
>
> ________________________________
> From: "b.burig@..." <b.burig@...>
> To: DynoMotion@yahoogroups.com
> Sent: Wed, February 16, 2011 2:33:03 PM
> Subject: [DynoMotion] Re: Making analog servo with KFlop + Kanalog
>
>  
> To get started I tried to read the values of ADC0 that I had a small voltage on
> JP6 ADC0 using the console command ADC0. result is always 0.
> I used the console to set DACO=2000 and I can see that on the analog IO screen
> but not on JP11 DAC0.
> What am I doing wrong.
> Bob
>
> --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> >
> > To use an ADC as the feedback for a servo loop select Axis Input Mode = ADC
> >on
> >
> > the Configuration Screen.
> >
> > You can specify Input Gains and Offsets.  Setting a Gain of -1 would invert
> >the
> >
> > input.
> >
> > If you need to sum 2 inputs you would need to write a C Program to do this.
> >
> > There is no direct support for that slow of a PWM output to an opto output. 
> >But
> >
> > you can do it with a C program something like shown below.  Configure the
> >servo
> >
> > axis as a dummy DAC output so the axis calculates the  ch0->Output value, but
> >
> > have the C program use the value to control the opto output.
> >
> > The added Kanalog I/O is described under the Kanalog Section here:
> >
> > http://www.dynomotion.com/Help
> >
> > I hope this helps
> > TK
> >
> >
> > #include "KMotionDef.h"
> > main()
> > {
> >     int v,i=0,k;
> >  
> >     for (;;)
> >     {
> >         WaitNextTimeSlice();
> >         v=ch0->Output;  // desired output
> >   
> >         k = ((i&1)   << 7)|  // bit reverse i
> >             ((i&2)   << 5)|
> >             ((i&4)   << 3)|
> >             ((i&8)   << 1)|
> >             ((i&16)  >> 1)|
> >             ((i&32)  >> 3)|
> >             ((i&64)  >> 5)|
> >             ((i&128) >> 7);
> >  
> >        if (k >= v)
> >             SetBit(148);
> >         else
> >             ClearBit(148);
> >   
> >         i = ++i & 255;  // 8 bit counter
> >     }
> > }
> >
> >
> >  
> >
> >
> >
> > ________________________________
> > From: "b.burig@" <b.burig@>
> > To: DynoMotion@yahoogroups.com
> > Sent: Wed, February 16, 2011 9:23:04 AM
> > Subject: [DynoMotion] Making analog servo with KFlop + Kanalog
> >
> >  
> > I have no idea how to use the low voltage ADCs on JP12 of Kanalog board. Or how
> >
> > to set up an analog loop on the Kanalog. Servoes are not new to me, made
> > hundreds of all types.
> >
> > Can I sum 2 inputs?
> > Can I invert the polarity of an input?
> >
> > I want to make an analog servo with PID loop with analog command generated by a
> >
> > temperature monitoring device. This input would control the temperature loop by
> >
> > outputting a PWM signal (say less than 60 cycles) to an Opto output (say IO
> >148)
> >
> > to control a heater.
> >
> >
> > In addition, I want to make another loop using a humidity sensor. It could be a
> >
> > simple on-off control, so I would set a reference, and read the input voltage
> > (input to ADC) and compare to the reference. If needed this may need to
> >expanded
> >
> > to PID loop as well.
> >
> > Is there a manual for Kanalog.
> >
>