No need for extra Host Shield or Bluetooth. All you need is a Micro USB OTG to USB Adapter.
Send data from your Arduino with Serial.println(), Serial.print() or Serial.write() in 9600 baud rate. Receive data with Serial.read().
Toggle between hex and ascii by clicking on received/sent data.
Let your own Android application receive data from Ardu…
Has your phone been stolen or lost?
You can push this app to your lost phone from another phone or computer at https://play.google.com/store/apps/details?id=com.primavera.whereismyphone No icon will appear on phone display.
Then send a SMS with the text "whereismyphone" to your lost phone, which will not be seen on your l…