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From Arduino to ADK
The document discusses Android Open Accessory Development Kits (ADK), which allow Arduino and other boards to act as USB hosts to connect to and control Android devices. An ADK board typically combines an Arduino with a USB host shield to provide input/output and communication over USB. The document outlines how ADK boards work and can be used to create open source hardware and software projects that extend Android device functionality through external devices and accessories.
From Arduino to ADK
- 1. From Arduino toADK what's all the fuss about ADK and why we should care please direct your complaints and threat mail to: E. Kosmas elkosmas@gmail.com
- 2. histerical data How ADKcame into existence?
- 3. The problem: using USBgadgets with your Android ● USB is asymmetric ○ host: controls bus, enumeration, initiates communication, acts as a power source ○ device: needs endpoints to speak to host, describes capabilities to host on enumeration, standard or vendor specific functions, draws juice (power) from host ● Most Android devices had no (or limited) USB host capabilities. ● No USB standard APIs.
- 4. The solution(s) Provide a USB Host API on Android 3.1 & Create Android Open Accessory devices to act as USB hosts
- 5. So what's AndroidOpen Accessory ● Accessory acts as host ● Android acts as device ● Two bulk endpoints for 2way communication
- 6. So how wecreate Accessories Accessory Development Kit ● Hardware ○ ADK board: Arduino Mega2560 + Circuits@Home USB Host Shield ○ ADK shield: provides input/output via LEDs, a joystick, temp and light sensors ● Software ○ USB host lib ○ Arduino sketch ○ Android Open Accesory library ○ other libs ○ Android demo app
- 7. open source hardwareand software Schematics and source code for ADK provided under Creative Commons BY-SA and Apache 2.0 license. ● Several companies released ADK compatible boards ● PIC based implementation available ● Arduino can be used as an ADK device.
- 8. Where to buyADK boards ● Arduino Store: It's the ADK board from the original Arduino makers. ● DIY drones: ADK for RC and UAV enthusiasts (I for one welcome our flying Android ovelords) ● Microchip: PIC based ADK (mass production anyone) ● Modern Device: Freeduino based ADK ● RT Corp: The one Google gave away at Google I/O ● Seed Studio: Seeduino based ADK ● SparkFun's IOIO board: has beta support for ADK development (and it's IOIO)
- 9. ADK using ArduinoUno and USB host shield Since ADK is Arduino + USB host shield you can make your own until your purpose built ADK board arrives. Follow the instructions on this URL: http://goo.gl/AmGgM
- 10. So what youcan make! just a few examples of Open Accessory Devices
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- 15. Music beta: LEDmatrix now playing
- 16. ...the sky isthe limit