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Author Topic: How to read data from a 3.5mm headphone hack?  (Read 2284 times)
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Brazil
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I was searching for a way to read data from a 3.5mm hack using an Arduino, but I couldn't find a well-detailed, beginner-friendly, tutorial on how to make this, at least how to wire everything and create a simple I/O code. Anyone know a good, beginner-friendly, tutorial about this topic?

PS: I don't want to use a modem like this, I to learn and make it not communicate only with iOS/Android devices.
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What's connected to the other end of the 3.5mm connector?
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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Brazil
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I was thinking about using my TI-84 for testing, then move to create a remote shutter release for my Canon 60D, and after that move to more awesome stuff like interacting with iOS and Android devices.


Sent from my iPad at 1:35am
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I don't think you connected the grounds, Dave.
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I only managed 2.7 million hits for "TI84 Serial Interface", but I still haven't got to the end of them.
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Brazil
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My question is not about how to make my TI-84 send the information, I already know that, it's about how to wire the connector to the Arduino to read the information.
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I don't think you connected the grounds, Dave.
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Ah! "Arduino TI84" was only 1.5 million results.
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"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

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from the description of the Audio Jack Modem for the iPhone it looks like just a regular acoustic modem from back in the day (110, 300, 1200 modems). and convertor is only translating the highs and lows of the audio coming in from the iPhone to a digital signal (5v 0v).
try this link to see if it might help....
http://www.appszoom.com/android_applications/tools/audio-serial-out_ssqt.html
the reason for the four conductor 3.5 jack is because it has a microphone line to bi-directional communication.
I found the schematic at http://robots-everywhere.com/re_wiki/index.php?title=Serial_on_Android_using_the_audio_port
« Last Edit: December 17, 2012, 10:37:04 pm by WinstonP » Logged

Brazil
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Thanks very much for the help. I'm going to look at that right now. smiley
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