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Serial communication via audio on Android

    https://davidawehr.com/blog/audioserial/
    Serial communication via audio on Android. In this blog post, we’ll go over how to send serial data from an Android phone using just the audio port. When working on AndroWobble, we needed a low-latency way to send data from an Android phone to an Arduino microcontroller. Revisiting this over a year later, I’m not sure why we didn’t simply ...

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.

Android Host Usb Rs232 Serial Cable With 3.5mm Audio Jack ...

    https://mu.cicig.co/product/idevjdd/android-host-usb-rs232-serial-cable-with-3-5mm-audio-jack-for-android-host-usb-rs232-console-eg-android-stp-tv-box-iptv
    (BIG OFFER) US $9.46 | Buy Android Host Usb Rs232 Serial Cable With 3.5mm Audio Jack For Android Host Usb Rs232 Console Eg Android STP TV Box IPTV From Vendor SINFORCON Company Store. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. Shop Quality & Best Computer Cables & Connectors Directly From China Computer Cables & Connectors …

Android Audio-serial Connection | Hackaday

    https://hackaday.com/2010/02/01/android-audio-serial-connection/
    Android Audio-serial Connection. This seems like something of a throwback hack. [WilinNeofoxx] has built an audio modem interface for use with his Android phone. A program running on the Android ...

A better audio jack console cable for Google Nexus devices

    http://www.pabr.org/consolejack/consolejack.en.html
    It was revealed in 2013 that many Google Nexus Android devices have a serial port multiplexed with audio signals in their 3.5 mm headphone socket. This is an interesting design decision because: Many mobile devices have an audio socket, even very small ones.

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