Using WiiChuck Adapter with Arduino

The Nunchuk is a very versatile tool. Contained in it are a 3-axis accelerometer, a two-axis joystick, and two pushbuttons for around $20. And you can even buy a wireless nunchuck to use as a controller! But many don't want to cut off their nunchuck connector. So here is an alternative.
In this Instructable I am going to show you how to connect the Nunchuk to the Arduino via the WiiChuck adapter. There are a couple of steps to this, first, we will hook it up, then we'll download the library and then download the code.

MATERIALS:

1 WiiChuck Adapter

4 Jumper Wires

1 Arduino Board (with USB Cable)

1 Nunchuck

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Step 1: Plugging in the WiiChuck

First, open up the WiiChuck and solder 4 wires into the board. If you look closely you will see that the board is labeled, so follow these instructions:

GND to GND (obviuosly
+ to +5V
C to Analog Input pin 5
D to Analog Input pin 4

Then plug in the board with the labels facing the groove on the nunckuck, as shown in the picture.
I soldered the wires going away from the labels, so just make it so the wires are point in the same direction as the groove.

sanosuke_kursch says: May 1, 2011. 11:16 PM

Now the link is there ;)
BTW, the nunchuck works with 3.3V signals, and the arduino with 5V signals, what do you to convert the levels?

maixy in reply to sanosuke_kurschMar 9, 2012. 1:10 AM

maybe you can use the IC MAX232

sanosuke_kursch in reply to maixyMar 9, 2012. 7:59 AM

I don't think the MAx232 would work with that, this chip is intended for RS232 signals, i2c uses a bidirectional bus on the same wire if I'm not mistaken.

maixy in reply to sanosuke_kurschMar 9, 2012. 8:55 AM

is not the max232 fit to rs232 signals?
i used it to carry message from MCU to my laptop.

sanosuke_kursch in reply to maixyMar 9, 2012. 9:07 AM

It's intended for that use, but it won't work to convert the level of the i2c signals.

crocboy (author) in reply to sanosuke_kurschMay 9, 2011. 5:07 PM

Ha I didn't know that! I believe that the nunchuk uses I2C and whether its good for your arduino or not, this thing works for me. The adapter that I used has been used by many and works so I guess I cant really answer your question. Sorry!

maixy in reply to crocboyMar 9, 2012. 1:22 AM

excuse me
does the nunchuck can work with stc89c52?
because in our county ,few of people use arduino

sanosuke_kursch in reply to maixyMar 9, 2012. 8:01 AM

If this chip has a i2c bus, I think so.
Otherwise I guess you'll have to write some code to make it work, but don't ask me how, I have no idea how to do that =B