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Step 3Hardware time
Ok, once you have the software uploaded to the chip you can put the arduino on the side for a little while, and get rid of that pesky computer keyboard
We will test the controller connected to the arduino In a little bit, but first we need to make some changes to the controller itself
Flip your controller face down on the table, using your small + screwdriver remove the 6 screws, the back and the controller board
... Apparently I am missing a picture, but place the controller shell / screws / buttons / pads in a safe place, and desolder the controller cable and its shift register IC
Once you have those 2 items out of the way (keep the shift register, its fun) clean and (re)tin all the pads
Most designs use the shift register to talk to the controller, as its a simple 3 wire device, but I had a rather large chip with (still) a lot of I/O pins, and a rather hard time finding a place for it AND another 16 pin dip chip, So I said ok and we are going to wire each button directly to a pin of the microcontroller
In order for this to work we need to know which pads go to what parts of the controller
We will test the controller connected to the arduino In a little bit, but first we need to make some changes to the controller itself
Flip your controller face down on the table, using your small + screwdriver remove the 6 screws, the back and the controller board
... Apparently I am missing a picture, but place the controller shell / screws / buttons / pads in a safe place, and desolder the controller cable and its shift register IC
Once you have those 2 items out of the way (keep the shift register, its fun) clean and (re)tin all the pads
Most designs use the shift register to talk to the controller, as its a simple 3 wire device, but I had a rather large chip with (still) a lot of I/O pins, and a rather hard time finding a place for it AND another 16 pin dip chip, So I said ok and we are going to wire each button directly to a pin of the microcontroller
In order for this to work we need to know which pads go to what parts of the controller
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