Editing Wii-Stuff

{{Project
|name=Wii-Stuff
|description=Wiimote & Balanceboard hacking
|project category=Software
|image=WiiBoard1.jpg
|status=obsolete
|people={{U|derf}}
|source=https://github.com/derf/wii-sensors{{!}}wii-sensors
}}
[[File:WiiDraw1.jpg|200px|thumb|right|Graffiti or something]]

Because motion controls are awesome.

== I/O ==

See also the [http://wiibrew.org/wiki/Wiimote Wiibrew article].

=== Accelerometer ===
3x 8 bit, for X, Y and Z. The readings include earth gravity (1G).
Supported range is about -6G .. 6G, giving us a pretty bad precision of 0.04G.

Useful for determining the absolute wiimote tilt state (pitch/roll/yaw) and throws (x=y=z=0 ⇒ "zero gravity" at the tip of a throw)

=== tilt sensors (MotionPlus) ===

[[File:Rotations.gif|200px|thumb|right|Axis names]]

Roll, Pitch and Yaw, 16 bit per value. ''Only'' reports relative motion, earth gravity doesn't matter. Also, it only reports motion around the Wiimote's own axis. Moving the wiimote up/down/left/right on a straight line doesn't really affect the readings.

Useful for pointing devices (works as good as infrared pointing) and detecting rotation (augmented reality).

=== Speaker ===

See [http://wiibrew.org/wiki/Wiimote#Speaker Wiibrew].

=== LEDs ===

Four LEDs. The bluetooth connection is fast enough to implement software PWM with 10 brightness levels.

=== Buttons ===

Can be read via Polling and Interrupts.

== Done ==

* Neverball: Wiimote is already supported, use [https://github.com/derf/wii-sensors/blob/master/neverball/tilt_wii.patch tilt_wii.patch] for balance board + wiimote support. Note that the patch is unstable and may crash while syncing.
* pointing device: [http://abstrakraft.org/cwiid/wiki/wminput wminput] supports infrared and button controls. Using the MotionPlus, one can have infrared-behaviour without actual infrared LEDs. The patch is available in the [https://github.com/derf/cwiid/tree/mplus-pointer mplus-pointer branch] on github
* Audio output with MPD interface (low quality)
* interactive blinkenlights using the LEDs

== Ideas ==

* Stepmania via Balance Board? (if it is precise enough)
* Minecraft: Movement via Balance Board, wiimote as pickaxe
* Use Wiimote as lightsaber (already possible for smartphones, but... whatever :p )

== See also ==

* [http://wiibrew.org/wiki/Wiimote Wiibrew article] about wiimote (more detailed)
* [https://github.com/derf/wii-sensors wii-sensors] git repo

=== Videos ===

* Neverball with balance board: [[Has video::http://finalrewind.org/interblag/entry/neverball-balance-board/bboard2.mkv|mkv]] / [[Has video::http://youtu.be/cIIBW7j1lAQ|youtube]]
* Testing Minecraft "Augmented Reality": [[Has video::http://lib.finalrewind.org/v/wiimote_minecraft.mp4|mp4]] / [[Has video::http://www.youtube.com/watch?v=9rj07tBJbyc|youtube]]
* Audio example: [[Has audio::http://lib.finalrewind.org/v/wmsp_im.mkv|Imperial March]]

[[Category:Projects]]