Interfacing to Wii Nunchuck

[Kamikaze47]

Nice

Wondering what you are building for the WII ?

I'm using the nunchuck for the 3-axis accelerometer. Next step is to interface a Wii Motion Plus too for the 3-axis gyroscope. I'm going to combine the two for a full 6 degrees of freedom sensor. The trickiest part of this will be the Kalman filter which involves some pretty heavy maths.

I'm doing all this because eventually i want to design and build one of these:

[Byte_Butcher]

I'm doing all this because eventually i want to design and build one of these:

Oh man.... I WANT one!


steve

[Kamikaze47]

Oh man.... I WANT one!

That was exactly my reaction. They are selling kits, but they are hugely expensive. I figured it would be more fun to design one from scratch anyway. I think i'll start with a 4 rotor version.

[Byte_Butcher]

That was exactly my reaction. They are selling kits, but they are hugely expensive.

Expensive AND out of stock.

Please keep use posted on your progress! (Photos, video, working code, )



steve

[Kamikaze47]

Please keep use posted on your progress! (Photos, video, working code, )

Will do, but it's going to be slow work.

The Kalman Filter to combine the accelerometer and gyroscope data into useful tilt measurements is what i'm researching at the moment. It's going to be tricky in PBP without floating point math.

[yatyas72]

I just started messing with the Wii Nunchuk and WMP to do a project similar to the MultiWii on RCGroups. I am just in the beginning stages of the project and was wondering if you would share any code for talking with the Nunchuk? My plan is to finish up the soldering of the connections tonight and hopefully if all goes well I'll be talking with the Nunchuk. I'm going to try and convert code from these sites http://nunchuckmouse.blogspot.com/ and http://www.musclera.com/wii-nunchuk-demonstration/ to PBP in order to accomplish this. It seems pretty basic but I've never messed with I2C. I figure if you have a heads up on how to do this any help would be greatly appreciated.
Currently I have a 18F2550 CDC/USB connection talking to a VB6 program that I use to send command to turn on and off relays, LED's and move servos around so I'm hoping I can just expand my program to receive the I2C info once I get it to talk and send data down I plan to move forward converting the Arduino code to PBP.
I also just bought a BTM-182 module from sparkfun to start messing with designing my own controller instead of using an RC remote. If anyone has experience using these or other bluetooth modules help there is appreciated also.
I am a Mechanical Engineer for a company called Lite Machines, I do all of the tool and die and fixture design stuff and dabble in programming. Check out http://www.litemachines.com we make UAV's for the military so all of this is not out of reach for me just that I'm limited on time and thought maybe we could get a thread started like this one http://www.rcgroups.com/forums/showthread.php?t=1332876.

Thanks,
Larry

[yatyas72]

BTW- This is not in anyway work related. Just something I thought I could do at home that might also get my 9 year old son involved in electronics also.

Thanks,
Larry