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Sending Data through Headphone jack in Android phones ...
https://stackoverflow.com/questions/10248649/sending-data-through-headphone-jack-in-android-phones#:~:text=the%20simplest%20way%20to%20catch%20input%20data%20from,tried%20but%20I%20believe%20it%20should%20work%20Share
android - How to detect input data through the audio jack ...
https://stackoverflow.com/questions/13594074/how-to-detect-input-data-through-the-audio-jack
I finally managed to read the pedal input. @emrys57 is right, replacing the jack with the 4-pin connector, triggered the input the same way microphones with a hook button do. However occasionally it seems to trigger the volume up and the volume down keys as well. I suppose this is related to me replacing the 4-pin jack with a knife and tape.
Transmitting Data From Android to Arduino Through …
https://www.instructables.com/Transmitting-data-from-Android-to-Arduino-through-/
Step 1: Hook Up Schematic You need to connect analog pin A1 to gnd with a resistor. (pulldown).Cut the earplugs so you have only the audio jack with 10 cm wires.After you find the gnd wire of audio jack ,connect it with arduino gnd.The other wire of audio jack connect it with analog pin A1.The electronic part of the project is finished
Is it possible to read iPhone or Android display data ...
https://www.tutorialguruji.com/android/is-it-possible-to-read-iphone-or-android-display-data-through-the-audio-jack/
Is it possible to read iPhone or Android display data through the audio jack? I’m not very well versed in the iPhone and Android API, so please bear with me if this is a stupid question. As I understand it, Square’s card reader works by converting the magnetic information on the card stripe into an audio tone that its software can then process.
Read Data from headset jack - Android Development ...
https://androidforums.com/threads/read-data-from-headset-jack.390405/
Read Data from headset jack. Discussion in 'Android Development' started by macaruchi, Aug 6, 2011. macaruchi Lurker. ... MIGHT make the device appear to android as an external microphone, making it recordable... but of course it depends on how your scanner uses the headphone jack.
Can we send data through USB/3.5mm audio jack in …
https://www.quora.com/Can-we-send-data-through-USB-3-5mm-audio-jack-in-android
Answered 5 years ago. We can definitely transfer data using the USB port (usually you can remove the micro-USB to standard USB cable from your charger). Unfortunately in the case of the audio jack, data transfer is not possible. The only transferable “data” would be the electrical wave forms which move from the device to the speaker/earphone or the microphone to the device.
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