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Satellite to Radio to Pneumatic Valve Answered

I want to receive some sort of satellite signal with a radio and then use the data I receive to control a pneumatic system to replicate a heart beating.
I have been talking around with some people who know a bit about radios and the such but haven't gotten much conclusive help. 
I would like to build as much of this as I can myself, the entire radio and everything, though I only have about a month to do it. A DIY radio kit paired with an Arduino might be the answer due to time restraints. 
What i've learned so far is that I probably want it to be a tunable AM radio. Whether or not I should build that myself from scratch, build a DIY kit, or just purchase one, I am not sure. How to then interface that into a system to then control a pneumatic system, I have no idea other than the obvious arduino. Lastly, I don't need any special signal from the satellite. I really just need to receive a voltage from the radio. Though, hooking into a satellite with an onboard atomic clock so that i can then display the time as well would be great. I am going to keep doing research, though if anyone here can lend a helping hand I would be very appreciative!

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thematthatter

3 years ago

Satellites dont broadcast in AM. AM requires a very large antenna. Those really tall red and white striped antennas on the highway are AM. Even at 1/4 to 1/2 the wavelength they are still over 400 feet tall. Thats way too big for a satellite.

the lower the frequency, the longer the waves, the longer the waves the bigger the antenna.

If you want atomic clock or time then you want to focus on GPS.

Also satellites dont just hang up in space waiting for you to talk to them, they rotate around the Earth, while the Earth is rotating around itself and the Sun.

I suggest you dont worry about satellites and just focus on radio waves on Earth.

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caitlinsdadthematthatter

Reply 3 years ago

Mars calling thematthatter...Mars calling thematthatter...this line is not secure...xnay on the commo specs...end of transmission.

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thematthattercaitlinsdad

Reply 3 years ago

its on wikipedia... its the stuff the NSA wants you to believe...

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Downunder35m

3 years ago

You fail to understand the technology.
I just assume it is another school project ...
I know a bit more about it but would not even try to create something like your circuit.
And where is the purpose? You say you don't need the signal from the satellite - so why use one in the first place?
To get a heart beat all you need is a simple timer.

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verence

3 years ago

What satellite? What signal? What frequency? What modulation? What data protocol?

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caitlinsdad

3 years ago

Was there a satellite message that the world is going to end in a month again? Did you figure out if any satellites(sent from Earth or otherwise) broadcast on the AM frequencies able to be picked up by a regular AM radio receiver? Any audio output from the radio can be used as the signal input for the arduino - (you might need some electronics to get it to the right voltage range) which in turn drives the motors/valves of your pneumatic system. Good luck.

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dlandry2caitlinsdad

Reply 3 years ago

Thanks a lot. You posed some really helpful questions that will help my process.