![Atmega usb gamepad](https://kumkoniak.com/102.jpg)
You will need the small shoulder button PCBs connected to the main PCB so don't throw anything away just yet. Unscrew the five screws of the gamepad to open it and remove all the parts. Note that if you buy the Atmega preprogrammed from me you don't necessarily need this but I might release updates to the firmware later. For this you also need Dupont jumper wires (Female-Female). Search for "usbasp" and you should find them for less than 2€. These are very cheap and available readily on eBay. To program the Atmega you will a USBAsp programmer. The "KTRL 64" logo and cheat sheet stickers are included when you buy the PCBs in the thread. Here is the list of other components if you want to get them from somewhere else: 0805 SMD components I also sell the other electronic components needed in the same thread as a set. You can buy this from eBay, electronic component retailers or buy them preprogrammed from me on. The microprocessor used by the KTRL 64 is the Atmega328P-AU (TQFP-32 package). I sell the main PCB plus the PCB for the two button adapter as a package. Search for "sega genesis extension" on eBay and you should find several. These can also be found on eBay of course (and other places). I have been using Sega Mega Drive gamepad extension cables for this, those have all 9 pins connected (all 9 are needed for this gamepad). Search for "innext snes" on eBay and you should find several sellers selling these, usually in packs of two for about 7€ and up plus shipping. There are a few different models out there but the best ones I have found for this are the iNNEXT branded ones. I have designed the PCB to fit the cheap SNES style USB gamepads available on eBay and elsewhere. *) or get the microprosessor preprogrammed from me. It all comes down to these steps: Get the needed parts, prepare the gamepad case, solder the components, program the microprocessor* and finally, put it all together. Below should be everything you need to know in order to make a KTRL 64 gamepad.
![Atmega usb gamepad](https://kumkoniak.com/102.jpg)