I got this idea after seeing some physics class use the wiimote in some kinda pendulum experiment.

Why not use the wiimote's built in 3-axis accelerometers to measue g-forces, acceleration and even calculate my own 0-60mph times!

So I did. I wrote a script to dump all the g-force readings from the wiimote to a comma separated value file, then did some post processing in MS Excel, and voila, I can see every bump, every curve, my acceleration and braking, and even calculated my current speed using high school physics (v=a*t)

I even convinced my coworker to take me out in his E46 M3 to measure his SMG's performance

I admit, it's not super accurate since the wiimote spits out G readings rounded to two decimal places. It also provides other acceleration readings in finer granularity, but I couldn't figure out what metric it was recording in. I used Gs since I knew it was just the acceleration of gravity (9.8 m/s/s).

Here's a copy of the script that dumps everything out to output.txt
All you need is Glovepie v0.29, a Bluetooth dongle with BlueSoleil, the Human Interface Device drivers, and a standalone wii remote!
All the basic instructions on how to get your wii remote connected to your PC can be found here:
http://www.wiili.org/GlovePIE

If anybody wants my excel spreadsheet with the formulas and graphs, you can find it here:
http://www.christiancarlson.com/klee/sample_wiimote_speed_calcs.xls

//Glovepie v0.29 script

var.t=time*86400

//Writes motion data to file
OutputToFile(RemoveUnits(var.t)+","+Wiimote.gx + ", " + Wiimote.gy + ", " + Wiimote.gz)

debug = var.t+', '+wiimote.gx+', '+wiimote.gy+', '+wiimote.gz

The Wiimote, nice n snug so it doesn't jostle around:

My 2.Slow's 0-60 time. 13.5s baby!!

My friend's E46 M3 SMG's 0-60 time

General Accelerometer readings:
When the blue line dips down, I'm making a left turn.
When it jumps up, I'm making a right turn.
When the Yellow line goes up, I'm accelerating.
when it dips down, I'm braking.

pic of my car for kicks:

Modified by klee at 5:26 PM 7-28-2007

Modified by klee at 4:32 PM 8-3-2007

Modified by klee at 4:33 PM 8-3-2007

You will never get that sound out of your Jetta...the S4 has a 4.2 V8.

They love all the hacks people are coming up with for the Wii.

Again, nice work.

yeah, it feeds the values to the PC in real time.

it didn't take long and I figured there'd be someone else out there who might benefit from the work. besides, it was a great way to learn the graphing feature in Excel for work

Oh, as for the M3, we didn't do a proper launch. The revs were pretty bogged down off the line on that run. My co-worker didn't look up the SMG launch controls until after we were done.

Low.Life.Society.

**PM ME FOR AIR RIDE INSTALLS**

you can play with my wii anytime

no homo.

LSinLV & jkrew... both victims of the VMG shenanigans. We you

Secondly, what's with everyone saying that he needs to get a social life and what not. I'm pretty sure I read every word he wrote, and I don't recall seeing anything that hints towards him not having an active social life. He took a class on physics and he applied some of the knowledge to a real-life situation. If you've read about the Wii, you'd have an idea of how it works. He put 2 and 2 together.

I'm not talking down on his work, just saying that the dude doesn't have to be a total nerd to do what he has done.

I guess I kind of formed a pet peeve regarding this type of slander because people tend to call me a nerd as a result of some of the things I say/do. The most annoying saying is, "Man, you must have a lot of free time."

-Emron

My Buildthread

Quote, originally posted by Curtis »

i want sex.

i swear if no one gets this reference i'm gonna have to choke a bitch!

Cars: 1992 Jetta GL -> 2003 GTI 1.8t

Quote, originally posted by Ubergolf2003 »

That is F*****G awesome

Seriously! I'm too ghetto for Wii, how can I do this with a Super Nintendo?

The mk4 forum ultimate chillers club squad society coalition stylz... for people who chill mad hard OG ChillAr

Any help would be appreciated

TIA, Doug

AZ .:R Crew

Canon EOS 10D

it'll append the info to output.txt in the glovepie install directory.

//Glovepie v0.29 script

var.t=time*86400

//Writes motion data to file
OutputToFile(RemoveUnits(var.t)+","+Wiimote.gx + ", " + Wiimote.gy + ", " + Wiimote.gz)

debug = var.t+', '+wiimote.gx+', '+wiimote.gy+', '+wiimote.gz

Quote, originally posted by Ubergolf2003 »

That is F*****G awesome

coolest thing of the day on the tex that ive seen...but it is 2:44 AM for me so there is still 21 hours for somethign cooler to come up

GO WINGS!