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Amazon.com: rs232 jack
https://www.amazon.com/rs232-jack/s?k=rs232+jack
Audio Output From A Serial Port | Hackaday
https://hackaday.com/2005/10/25/audio-output-from-a-serial-port/
The cassette output uses a DIN-5 jack and a cable that connects from that to a regular tape recorder with a 1/8″ jack. And another thing: the DIN-5 jack is the same as a MIDI cable (same pinouts ...
Solved: Intel Galileo serial port(audio jack) lags ...
https://community.intel.com/t5/Intel-Makers/Intel-Galileo-serial-port-audio-jack-lags/td-p/503417
We know the RING and TIP are connecting the RX and TX of serial port, so we actually connect the RX and TX (the 2 and 3 pin of serial port), and what we input will instantly appear on the putty session. The result is exactly what we expected. The input is exactly the output, no lag, no error, very reliable.
RS232 serial signal input via 3.5mm audio port of android ...
https://stackoverflow.com/questions/19383890/rs232-serial-signal-input-via-3-5mm-audio-port-of-android-smartphone-android-de
I have a device, which gives me an output of essentially just a RS232 serial signal (1200 baud, 8 databits, no parity bits, one stop bit). This output comes in to my android phone via the 3.5mm audio jack. I want to store every data bit into a variable, display or calculate something and when the next bits come in, it should override the variable.
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