Maker Pro
Maker Pro

Data transfer using audio/cell phone

C

Coyoteboy

Jan 1, 1970
0
Hi all, not sure if this has been asked before but I'll ask it again
and you can moan if it has :)

I'm looking to place a remote metering device approximately 25 miles
from my house - the only wireless method of data comms i can find is
using gsm technology. The price of a GSM specific board is seriously
prohibitive, especially as a) the device will be in a fairly insecure
location and b) is only a fun project. I do, however, have a stack of
old cell phones sitting around-anyone know if i can modify one of the
older types to accept serial data from my device and be
'dial-into-able' from a standard modem so I can grab current data? I've
seen a fair few companies about it but they all quote 500+ for this
sort of setup, which is just beyond a students limits lol.
Anyone know of anyone who has done a similar thing before? Seems like
something someone would have attempted, if you see what i mean?

Any help appreciated, google is only good at returning commercial
solutions.
Cheers
James
 
A

anon

Jan 1, 1970
0
The text message thing would work ... wheather you want to use that depends
on the type of data your sending ... You can just build a serial connection
on your board and add some code to your PIC to control the GSM phone, using
it's AT command set ... to send a text message AT+CMGS <followed by the PDU>
.... or use ATD<num> to make a data call back to yr modem ....
 
C

Coyoteboy

Jan 1, 1970
0
I'm looking into using a nokia mobile linked to the pic via an mbus
cable - should be able to do what i require - got a few nokias hanging
around :) just got to get the phone set up on a 'charge-the-recipient'
sim card, if possible.

J
 
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