[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: rotor control question

> Good morning to the BBS.
>    I'm afraid I'm not a programer or even a real good technician but 
> a question about rotor interfaces keeps popping into my head. 
>    How hard would it be to build an interface for rotor control 
> using a "basic stamp" approach? 
>    From the little I've read they come with A>D, D>A, I/O all on one 
> chip basically.   Could one be set up to read just the numerical 
> output of some of the current tracking programs?  Then read a A>D
> line from the meter of the rotor control  and command the output of 
> the appropriate line to enable the up / down, left / right lines for 
> relay control of the rotor? 

I believe this approach is used by the FODTrack interface that actually
uses a D-A converter as well as voltage comparators instead of a PIC
microcontroller to move the antenna in the direction of the satellite.
The AZ/EL data is fed to the controller through the parallel port of the PC.

This appears to be one of the easiest method I've learned about so far.

73, de John, KD2BD

-=-=-=-=-=-=-=-=-=-=-=-=- John A. Magliacane, KD2BD -=-=-=-=-=-=-=-=-=-=-=-=-
Internet  : kd2bd@amsat.org          |  Voice : +1.732.224.2948
Satellite : AO-16, LO-19, KO-25      |  Morse : -.-  -..  ..---  -...  -..
Packet    : KD2BD @ KS4HR.NJ.USA.NA  |  WWW   : http://www.njin.net/~magliaco/
Video     : 426.250 MHz/439.250 MHz  |  FAX   : +1.732.224.2060
-=-=-=-=-=-=-=-=-=-=-=- Linux doesn't cost.  It pays. -=-=-=-=-=-=-=-=-=-=-=-
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org