Connecting outsideworld with Android and Arduino

Godfrey Nolan

History Getting Started Connecting to the outside world Barcode scanner eBay app demo Other apps Q&A

Using Classic Bluetooth

Serial Port Profile

Take advantage of the Arduino community

Limited by your own imagination

Increase shields

Easier to get up and running than iOS

Bluetooth History

Android 1.5 – Bluetooth APIs

Android 2.3.3 - Security Enhancements

Android 3.0 - Bluetooth Profiles

Android 4.0 - Bluetooth Health Device Profile

The following tools were used

Arduino Mega ADK Board

Arduino Bluetooth Shield

Asus Eee Pad

Eclilpse, Android SDK, Arduino IDE

Hello World

Traffic Lights

Press Buttons on Android

Toggle LEDs

Android code in Eclipse Arduino sketch in Arduino IDE Put it all together Demo app

Bluetooth API calls

Enable Shield

Pairing with device

Connect to Bluetooth socket

Communicate on Input and Output streams

Send and Receive Messages

Connection Management

Bluetooth shield operates on serial interface. Enable shield commands

Make sure the Arduino is paired with device

Create and connect a BluetoothSocket Get Bluetooth Input and OutputStreams

Communication is handled through streams

Once connection has been established, sending and receiving messages is simple

Connection Management

Connection management is problematic Data coming from Bluetooth shield needs to be monitored for

connection status messages

Messages mixed in with other data from the device

Making a robust Bluetooth connection can involve a lot of computational overhead.

Arduino has no control over … Shutting the connection down

Trying to (re)establish a new connection

Android device and Arduino board connected via Bluetooth

Arduino connected to barcode scanner over RS232

Barcode scanned

Info sent to the Android device

Device searches google shops for item

Upload info to eBay for sale

http://www.youtube.com/watch?v=xMvZqGYFVfk

Android code in Eclipse Arduino sketch in Arduino IDE Put it all together Demo app

Credit Card Reader Breathalyzer Virtual Dashboard

Credit Card Reader

http://www.youtube.com/watch?v=QVFPJnVbAao

Breathalyzer

http://www.youtube.com/watch?v=WMhcQNvoJ9Y

Virtual Dashboard

http://www.youtube.com/watch?v=kAjhYzEjzsg

Code is relatively simple Boards are problematic Bluetooth works over 10-20ft USB for closer work Future Plans

Raspberry Pi (demo)

https://github.com/riis/AndroidArduino http://shieldlist.org

http://www.riis.com @riisllc godfrey@riis.com