From GTUG 4 Athens 'The Rise Of The Robots' 5 Sep 2011 E. Kosmas elkosmas@gmail.com

1. From Arduino to ADK
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 ADK came into existence?

3. The problem:
using USB gadgets 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 Android Open Accessory
● Accessory acts as host
● Android acts as device
● Two bulk endpoints for 2way communication

6. So how we create 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 hardware and 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 buy ADK 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 Arduino Uno 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 you can make!
just a few examples of Open
Accessory Devices

11. external LCD screens

12. voice controlled Roomba

13. Android controlled labyrith

14. Arachnoid robot

15. Music beta: LED matrix now playing

16. ...the sky is the limit