Design for a Positioner with DiSEqC Decoder

harm lok

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echostar / pace / aston
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Some progress with the hardware .
With thanks to Mike Berg ... N0QBH i have used his zero detector to build a diseqc pickup for decoding the signal and decode it into my cortex environment. I have build the zero detector into a old housing off a antenuator .
diseqc01.jpg
Before closing it again.
diseqc02.jpg
Here ready and connected between the v-box and and the receiver.
I have also baked a pic for monitor the pickup with a display .
diseqc03.jpg
The pickup is working perfect with cables off 2-4 metres.
The only part to build is a signal meter with a voltage output.

Maybe there are already people who have build such a universal signal meter. It would be nice to design something that's detecting any receiving signal from a satellite (analog and digital) without the needed of a complicated receiver / amplifier chip..

will be continued..
 

Llew

cerca trova...
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Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
My Location
The Flatlands of East Anglia
Some progress with the disecq decoder

Thanks for the effort Llew.
This day i have received the complete diagram of the sr8700 (including the power supply) from a old echostar employee .
So if some people would like tho have a copy please send me a pm
That's quite a find by you harm - rare to get any Echostar service info these days, even though (or perhaps because) it's ancient stuff. Kudos to you :)
I'll PM.
 

harm lok

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I have completed and justified the algorithm for the positioner software en also put it into c++ for a cortex processor. But the code uses a lot off mathematical functionality / processor power. Maybe it is better to generate a lookup table indexed in count pulses during power up off the positioner. In that way a (cheaper) M0+ cortex processor can do the job.


For people who like math , i can send the mathlab code to generate the code and this animated plot (gif) for your dish situation.
You wil need a mathlab/simulink software installed.
 

harm lok

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My Satellite Setup
echostar / pace / aston
My Location
The netherlands
For people who like math , i can send the mathlab code to generate the code and this animated plot (gif) for your dish situation.
You wil need a mathlab/simulink software installed.
Sorry i can not upload the gif file
 

Channel Hopper

Suffering fools, so you don't have to.
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A little less analogue, and a lot more crap.
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The forum accepts only .jpg and .zip files for attachment, with limit to size.
 

harm lok

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echostar / pace / aston
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The netherlands
The forum accepts only .jpg and .zip files for attachment, with limit to size.
I have converted the file to a zip file in the attachment. Accepting gifs with the same size as a jpg can give the forum more movement.
 

Attachments

  • PlotChannelMas12.zip
    638.2 KB · Views: 33

a33

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... and this animated plot (gif)


Why did you, instead of using one straight blue line, make this a blue line with a fixed angle in it?
I cannot think of a reason or a function for that, in the calculation.

I assume the blue line represents what I call the TopBolt of the actuator (on the dish) to the rotation axis on the mount (your blue/black dot in the gif-file).

Greetz,
A33
 

a33

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Some progress with the hardware .


will be continued..

I'd be interested to know the progress of this project?

Greetz,
A33
 

harm lok

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echostar / pace / aston
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I'd be interested to know the progress of this project?

Greetz,
A33
Hello A33,
Unfortunately i have not been able to work for several months because of my health.
Luckily things are going a bit better so i can pick up my hobby again.
 

a33

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OK, harm,
I hope you will get better!
And when you have something to report, I'll be glad to read it.
No hurrys, though! It's just that I sometimes wonder what is happening, when there is no message anymore...

Greetz,
A33
 

KE4EST

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Amiko 4K.UHD on Motorized STAB motor 120cm dish and 3M C-Band dish.
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North Carolina, USA
Hello A33,
Unfortunately i have not been able to work for several months because of my health.
Luckily things are going a bit better so i can pick up my hobby again.
I hope you are feeling better Harm. Any more work on this project?
 
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