I am trying to figure out how i could make an android app like this one, https://www.youtube.com/watch?v=cVj0jqOlGXo but instead of transmitting through bluetooth it would transmit it through a usb cable that plugs from my phone directly into my arduino.

  • There are no "good" answers for this, but two classes of possibilities - USB host mode, and "accessory" or "ADK" mode. Both have a number of issues. Both have received substantial coverage on the main stackoverflow site which you should read (do not simply post a new question there) and elsewhere online. Jan 3 '16 at 16:29

I think you may want to look USB Serial port communication in android. Some googling will help here's a nice example of such work, described in detail:


And in case the codes/that source gets lost, here is the GitHub link of the developer: https://github.com/felHR85/SerialPortExample

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