Connecting outsideworld with Android and Arduino
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Using arduino and bluetooth to connect Android tablets to the outside world. Shows a number of demo apps we built in the summer of 2012.
Transcript of 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
