The document discusses the myth that a touchscreen can be created for 50 euros or less using a Wii remote, infrared pen, and software. It explains the theory behind how this works by using the Wii remote to track the infrared signals from the pen and relaying it to software. The document then demonstrates how to practically set up such a system by connecting the Wii remote to a computer, calibrating the screen with software, and then being able to surf or draw on the screen with the infrared pen. It concludes by recapping the components needed and asking what more can be done with this low-cost touchscreen technique.

1. TOUCHSCREEN FOR 50€
myth or reality?
Marko Puusaar
SCHOOL - FROM TEACHING INSTITUTION TO LEARNING SPACE
1st – 3rd of april 2009, Tartu, Estonia

2. Photo: www.flickr.com/photos/kwc

3. Photo: www.flickr.com/photos/drachmann

4. Today we have a myth of
our own to put to the test
Photo:www.flickr.com/photos/simonwakefield

5. You can make any
surface into touchscreen

6. for 50€
or less

7. Photo: eluniversoinvisible.files.wordpress.com

8. The one to blame for releasing the myth
Photo: eluniversoinvisible.files.wordpress.com

9. Unbelievable?
Photo: www.flickr.com/photos/willyf

10. Lets see

11. HOW?
The theory

12. Wii Remote
Photo: www.flickr.com/photos/maurymccown

13. Infrared pen
Photo: www.flickr.com/photos/melancon

14. Software
Photo:www.smoothboard.net

15. Photo: www.uweschmidt.org/image/wiimote-whiteboard-097-uis

16. Photo: www.wiiphotos.com

17. Photo: www.flickr.com/photos/chipgriffin

18. Photo: www.flickr.com/photos/alist

19. Photo: www.flickr.com/photos/alist

20. Photo: www.flickr.com/photos/jonwiley

21. Photo: www.flickr.com/photos/earlg

22. Photo: www.flickr.com/photos/jonwiley

23. Photo: www.flickr.com/photos/emagic

24. Photo: ironink.wordpress.com

25. Infrared camera
Photo: www.flickr.com/photos/penmachine

26. Photo: www.flickr.com/photos/melancon

27. Photo: www.flickr.com/photos/psykolio

28. Photo: www.flickr.com/photos/melancon

29. Photo:www.smoothboard.net

30. HOW?
The practice

31. Connect the Wii Remote
to your computer

32. Start the software
and calibrate your screen

33. Surf!
Photo: www.flickr.com/photos/monkeyc

34. Let’s try it out
and see will this myth pass our test?

35. Photo: www.flickr.com/photos/dmuth

36. Recap

37. Wii Remote

38. Wii Remote +
IR-pen

39. Wii Remote +
IR-pen +
a bit of software

40. Wii Remote +
IR-pen +
a bit of software
= 50€ touchscreen

41. What more can be done?

42. Thanks
Creative Commons Attribution-Share Alike 3.0 Unported License

43. Resources
http://johnnylee.net/projects/wii/
http://www.smoothboard.net
http://www.uweschmidt.org/wiimote-whiteboard
http://www.instructables.com/id/Wiimote-Whiteboard-IR-Pen/