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Topic: Arduino 2 way comunication over fsk audio ? softmodem library ! can it be done ? (Read 787 times) previous topic - next topic

kourpetis

Hello community,

i am a member of a local volunteer search and rescue team, and i thought that this project would look handy
http://www.youtube.com/watch?v=I5FADQDrGrY

i've done it so far and it plays really ok. thanks to Clayton Ford.

no all i am thinking is to take it to an other level, and it did up so far.

here is my twist of the code until now.
http://pastebin.com/gqCbvbQe

it transmite everything to morse and it really works. all perfect until now.

i saw this library thow that can transmite in FSK
http://translate.google.com/translate?hl=en&prev=/search%3Fq%3Dhttp://www.switch-science.com/products/detail.php%253Fproduct_id%253D364%26hl%3Den%26client%3Dfirefox-a%26hs%3DL9M%26rlz%3D1R1GGLL_en___US367%26prmd%3Div&rurl=translate.google.com&sl=ja&twu=1&u=http://code.google.com/p/arms22/downloads/detail%3Fname%3DSoftModem-004.zip

i would like to enclose it and have on the enclosure 2 x 3.5 mm female audio http://media.digikey.com/photos/CUI%20Photos/SJ-3523-SMT.jpg

one for line in
one for line out

now my problem is can i use this library to conect my 2 arduino uno so i can send a text message of 64 characters ?

and i go for audio while the place that i leave is volcanic and sismic active, there is a high chance in a case of an hard earthquake or volcanic eruption to stay with out gsm, 3g, 4g, wifi or even power :D.

as i said i am a member of a volunteer search and rescue tem and i would like to creat a rawbust - versatile text messager that can be versatile.
arduino to audio -----> walkie talkie / radio, phone line, uhf, vhf ------> audio to arduino

so does anyone thing that this libraby can do the job ?

kourpetis

i now that it modulates to fsk. i don't know how to demodulate an fsk audio signal.

any help here ?


kourpetis

Thank you BillHo for your reply.


so to understand here instead of ir led and photoresistor this were my audio IN/OUT is and a the reciever part i wont have analog inputs but digital. right ?

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