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marks256
Mad Scientist
USA
402 Posts |
 Posted - May 21 2006 : 9:52:09 PM
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I have a Cell Phone, and i share minutes with my parrents. They are always complaining about the fact that we NEVER use anywhere near the amount of minutes we get per month.
I think we have ~1200 a month, and we use ~800.
My idea is: My best friend lives 20 miles (32 km) from my house, and since it is the end of the school year, we won't beable to swap files via cd, or flash. He doesn't have internet.
I was wondering if it would be possible to design some type of system to transfer files via my cell phone to his home phone?
My theory would be to use the sound card on each our systems, and then make some type of program in VB to turn different frequencys into a binary number, then save the file.
Any ideas?
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Knowledge is a dangerous weapon that humans should not be trusted with. |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 23 2006 : 11:17:29 AM
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Easily done. It's called a modem.  VERY slow though...
If the cell phone has Internet access, you can generally also use it as a modem directly and get a decently fast connection.
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marks256
Mad Scientist
USA
402 Posts |
Posted - May 23 2006 : 8:07:36 PM
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no internet connection, just a crappy cell phone.
The problem is, a call from my HOME phone to his HOME phone is long distance (2 different phone companys.)
But a call from my CELL phone to his HOME phone, is sigificantly cheaper.
I was just thinking, since it has a 2.5mm jack on it for a headset (mic and speaker), i could make a simple cable, and plug it into my computer. Then i could make a program in QB or VB to create a tone on the sound card.
It could be setup as:
High Pich -> 0
Low Pich ->1
Then we could just convert the program into binary, then send it over the phone. Sure it will be slow, but hey, it is cheap!
adventually, i would like to get my ameture radio licence, then we could send data over radio.....
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Knowledge is a dangerous weapon that humans should not be trusted with. |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 25 2006 : 09:34:44 AM
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As I said, all you need is a modem. Find an old modem and hack the output stage to eliminate the transformer used to interface to the phone line. Connect to the mic and speaker of your cell phone with an accoustic coupler or by hacking the phone directly. Now open up a terminal program, establish a connection manually and transfer files. It will be SLOW.
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marks256
Mad Scientist
USA
402 Posts |
Posted - May 25 2006 : 4:54:02 PM
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Never thought of that...... i'll try it when i get some time... Thanks
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Knowledge is a dangerous weapon that humans should not be trusted with. |
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Would this work?
