Reading Arduino digital input status on an Android phone

I would like to be able to display the status of digital pins on an Arduino Mega 2560 on the Widfire S. Can anyone help please?

You might want to check out the Android app Arduino Commander (http://anettosoftware.co.uk/ac.php), which includes several methods to connect an Arduino to an Android phone:

  • Via bluetooth (using bluetooth shield or add-on card);
  • Via ethernet with a W5100 ethernet adapter;
  • Via USB host mode;
  • Over USB as Android Accessory.