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Wii Motion Plus Beta Support

admin — Thu, 23 Jul 2009 22:54:58 +0000

Brian has done it again, check out the following cross-posting from brianpeek.com detailing beta support for the Wii Motion Plus:

I have posted a new version of WiimoteLib as a beta for people to play around with the Wii MotionPlus accessory. Please note that this is not a stable release and should only be used if you wish to mess around with the MotionPlus. Also note that only C# source code is included in this release as it is not a final build. Here’s the change log:

v1.8.0.0

Taiko Drum Master’s TaTaCon drum controller supported (Dean Herbert)

Bare-bones Wii MotionPlus support (wiibrew.org, testing by Tyler Tolley)

WiimoteTest UI changed to add MotionPlus data

Please note that the current version is VERY flakey and may not work at all for you.

Pair your Wiimote, plug in your MotionPlus, call InitializeMotionPlus()

Extensions plugged into the MotionPlus will give wacky results…not supported…yet!

Internal changes to perhaps fix some threading issues

So remember, it’s a beta, it may not work for you, and the data you’ll get back from the accessory is just the raw data it provides. You won’t get real orientation values.

That said, head over to CodePlex and give it a try! (Brian Peek)

Great work Brian!

Status of Wii MotionPlus Support for WiimoteLib

admin — Fri, 19 Jun 2009 22:01:45 +0000

Here is a Cross Post from brianpeek.com detailing Brian’s current progress with the Wii Motion Plus: Source

Ok, I get about 10 emails a day on this, so I figure a status update is in order.

The Wii MotionPlus extension for the Wiimote was released last week. Since then, I and others have been working to figure out how the device works. Unfortunately, it does NOT work as every other extension controller has worked up until this point, mostly due to the fact that the Wii MotionPlus accessory has an expansion port of its own so all of the other extension controllers can plug into it.

In the past few days, some progress has been made thanks to the folks over at wiibrew.org, although functionality is nowhere near complete. For example, it’s currently impossible to have the Wiimote notify you when the Wii MotionPlus is inserted into the bottom of the Wiimote, like all of the other extension controllers do.

I have been working with the information at wiibrew.org and am trying to get things working reliably with my library so that developers can actually get some degree of functionality out of it.

So, all that said, expect to see a new (likely beta) version of WiimoteLib “soon” that has some bare-bones Wii MotionPlus functionality included. It won’t be perfect, complete, or bug free, but it will allow you to tinker with the device a bit. I will update my blog when the new version is available. Thanks!

Wii Motion Plus

admin — Fri, 12 Jun 2009 18:39:08 +0000

Well its Wii Motion Plus release day here i the uk and the stores are full of them, so I had no need to panic about getting hold of one this morning!

The good news is that the device does not crash either WiimoteLib or my WiiCi application and the bad news is that the device does not crash either WiimoteLib or my WiiCi application so I have no place really to start.

Some information about the WiiMP has started to appear over at wiibrew however this leaves me with a feeling that getting it going in WiiCi is going to be a big job. Here is a snapshot the current state of thought from wiibrew:

The Wii Motion Plus consists of two rate-gyros. These gyros measure rotation SPEED, but can’t actually measure absolute orientation, which causes drift if not corrected by some other data source. Speed is one step better than the acceleration reported by the accelerometers. One of the two gyros will obviously have to measure yaw, since that can’t be measured by accelerometers. The other axis is unknown, but I would guess pitch. Unlike the rotation measured by accelerometers, whose axes are defined by gravity, the gyro axes are relative to the angle of the Wiimote. So even if it can measure yaw when the Wiimote is in the normal orientation, it won’t be able to detect yaw when the Wiimote is vertical.

In addition to providing yaw, the gyros also allow the software to tell the difference between orientation and acceleration, which are difficult to tell apart from the accelerometers which measure a mixture of both.

Sounds like a start from the begining job to me!