Building robots using android and arduino google devfest
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http://sudarmuthu.com/blog/building-robots-using-android-and-arduino-in-google-devfestx Slides from my talk about Arduino and Android which I gave at Google DevfestX
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Building robots using android and arduino google devfest
- 1. Building Robots using Android and Arduino Sudar Muthu Research Engineer, Yahoo! Labs http://sudarmuthu.com http://github.com/sudar http://twitter.com/sudarmuthu
- 2. Agenda • Let’s start with a demo • Anatomy of a robot • Android • Arduino • Making them talk – Over Bluetooth – Over WIFI – Over USB wire – Over Audio Jacket – Over GSM • Summary • Questions
- 3. Let’s start with the demo Demo http://sudarmuthu.com/arduino/asimi
- 4. Anatomy of a Robot Sensors Motors Processor
- 5. Android can act as a .. Sensor – Accelerometer – Camera – Magnetic Compass – GPS – etc. Processor – Native Java App – Android Scripting Environment (ASE)
- 7. Missing part is.. Motor (and that’s where Arduino can help)
- 8. Arduino • Visual Basic for hardware • Includes both Hardware and software Photo credit Arduino team
- 9. We have Android (Sensors & processor) and Arduino (Motor)
- 10. We have Android (Sensors & processor) and Arduino (Motor) Let’s make them talk
- 11. Making them talk • Over Bluetooth – Serial Socket • Over WIFI • Over USB – ADK – Normal Way • Over Audio Jacket • Over GSM • Over C2DM • Over NFC • Others (Intermediate computer etc)
- 12. Over Bluetooth You need • Bluetooth Shield (or just a Bluetooth Dongle) • Library – Amarino - http://amarino-toolkit.net • Or create a Bluetooth Socket Advantages • Wired connection is not needed • Can work from Android 1.5 • Two way communication Disadvantages • Power consumption is high • Slightly slower when compared with others • Range is limited
- 13. Over WIFI You need • Wifi Shield • Wifi Connection Advantages • Wired connection is not needed • Two way communication • Can work from Android 1.5 Disadvantages • Both should be present in the same network • Power consumption is slightly high
- 14. Over USB Cable - ADK You need • ADK Board or USB Host Shield • ADK SDK Advantages • Native support from Android • Two way communication Disadvantages • Will work only in 2.3.4 + • Wired Connection is needed
- 15. Over USB Cable – Socket & Logcat You need • USB Host Shield • Library – Microbridge - http://code.google.com/p/microbridge/ Advantages • Works in older versions as well • Two way communication (Socket & Logcat) Disadvantages • Wired connection is needed • The bandwidth is slower
- 16. Over Audio Jacket You need • Male Audio Pin • Pre-encoded Wave/MP3 files • http://sudarmuthu.com/blog/transferring-data-from-android- using-audio Advantages • Very compact • Less power consumption Disadvantages • Slightly difficult to get it to work • Baud rate is slow
- 17. Over GSM You need • GSM Arduino Shiled • Two sim cards Advantages • Range is unlimited • Very simple to setup • Two way communication is possible Disadvantages • Operating cost (SMS) • Potential to abuse
- 18. Over C2DM You need • Ethernet or Wifi Arduino Shield • C2DM account Advantages • Good for notifications • Very easy to setup in Android side Disadvantages • Only one way communication is possible • Works only from v2.2+ • Need Wifi connectivity
- 19. Over NFC You need • NFC Shield • Phone which has NFC Advantages • Very easy to setup • No connection needs to be setup Disadvantages • Works only from v2.2+ • Very short range
- 20. Other Options Some notable alternate options • Using Computer as a intermediate transmitter • USB Host support (in case of tablet or rooted phones) • Serial VGA (You can project from an Android phone)
- 21. Don’t throw away your old phones ;)
- 22. Links • Arduino – http://arduino.cc • Microbridge – http://code.google.com/p/microbridge/ • Amarino – http://amarino-toolkit.net • USB Host Shield – http://circuitsathome.com/products-page/arduino- shields/usb-host-shield-2-0-for-arduino/ • Using Arduino as ADK – http://sudarmuthu.com/blog/using-standard-arduino- board-as-googles-adk-kit • My articles about Arudino – http://sudarmuthu.com/blog/category/ardino • Demo source code – http://github.com/sudar/Asimi • Demo Project page – http://sudarmuthu.com/arduino/asimi • Cellbots – http://cellbots.com
- 23. Questions Thank You Sudar Muthu http://sudarmuthu.com http://gitbub.com/sudar http://twitter.com/sudarmuthu