Dave S

Wanted to post an update - Got the Joystick pretty much taken care of. I am still working on the paddles, I found I can actually use a 500Kohm Potentiometer and the 2600 only really operates in the 0 ohm - 300 Kohm range. I am thinking about Rybags idea of useing a few different resisters and run them off extra digital outputs on the microcontroller (resisters are extreemly cheap on the internet). I did actually make it emulate a paddle useing a hobby Servo connected to a 500Kohm Pot, but this method costs too much (both money and energy) and is a bit too loud (servos are not quiet at all). I thought about the suggestion of useing a digital pot (thanks GroovyBee) but I have very little experience with them and they do not come in DIP packages. I have looked at the driveing controller schematic and It is very do-able but I currently have no Driveing controller games to test it on. As of now I have been powering the nunchuck adapter off of a plug in power supply, but I was wondering if anyone knows the actual max power output of the paddle supply (pin 7). It would be excellent to eliminate the extra power supply and run everything off of the 2600.

Getting the Nunchuck to emulate a 2600 Paddle is becomeing a real challenge. I remember reading that the 2600 uses a 1Mohm Potentiometer to charge a capacitor and the time it takes to fully charge corresponds to paddle position. I have tryed a few ways I believed would work but have come up empty handed (so far). As for steering control, I already have the wireing figured out for the Joystick and it should be just a few changes in codeing for that to work, unfortunately I have no games for a driveing controller (yet). I was wondering if anyone could suggest one? Also thanks for the input, I am happy to see soo many people reading this (keeps me motivated):-)

According to Windmeadow Labs (where I found the nunchuck hack) It is only suppose to get 3.3V but they have not had any problems useing it with 5V. My goal was to make the nunchuck act as standard stick controller so I could use it on games already made. I did not know the 2600 could handle I2C but knowing that opens up even more potential for this project ( Like digital converted analog inputs and savescore )

I have been working on useing a microcontroller board (Arduino) to take information from a wii nunchuck and use it to control an ATARI 2600. So far I have the joystick working and the Z button working (as fire) and the C button is being used to calibrate nunchuck and switch between joystick and accelerometer. Since nunchuck gives analog values (in i2c format) and the atari joystick works off of digital, the Arduino board converts analog value (i2c) to a digital output. I still have a little tweaking to do on the accelerometer data conversion. I originally decided to do this becuase I wanted to just see if I could and I wanted a wireless controller (I use a wireless nunchuck) so I would not have to sit soo close to the TV. After I got it working I started wondering if anyone else would be interested. I still need to get the accelerometer bugs worked out and I need to figure out a circut that I can use with the Arduino to emulate a paddle controller. Any ideas or suggestions about anything with my little project will be greatly appreciated. Thanks.