The most interesting and important part of the hardware design is the EEPROM (electrically erasable programmable read-only memory). I added three slots for attaching I 2C sensors to the primary I 2C bus on physical pins 3 and 5. While the gamepad's primary purpose is to play retro games, the add-on board is large enough to include home-automation features, such as monitoring temperature, humidity, light, or barometric pressure, that you can use when you're not playing games.
I used through-hole tact switches: six 6圆x4.3mm switches for movement and the A and B buttons, and two 3圆x4.3mm switches for the Start and Select buttons. The gamepad uses eight "momentary" buttons (i.e., switches that are active only while they're pushed): four tactile (tact) switches for movement (Up, Down, Left, Right), two tact buttons for A and B, and two smaller tact buttons for Select and Start. However, it's not hard to make a gamepad similar to the iconic NES controller using the design I created. There are a huge variety of gamepads available for purchase, and some of them are really complex.
I designed it as an add-on board for Raspberry Pi using an EEPROM and a devicetree binary overlay I created for mapping the keys. So, I made my own simple open source hardware gamepad, which I named the ANAVI Play pHAT. There are a lot of options on the market for USB gamepads and joysticks, but as an open source enthusiast, maker, and engineer, I prefer doing it the hard way. I enjoy the simple games included in Raspbian, and the open source RetroPie project helped me turn my Raspberry Pi into an advanced retro-gaming machine.īut, for a more authentic experience, like back in the "old days," I needed a gamepad. Although most of my old computers and game consoles are long gone, my Raspberry Pi can fulfill my retro-gaming fix. Welcome to the communityįrom time to time, I get nostalgic about the video games I played during my childhood in the late '80s and the '90s.Running Kubernetes on your Raspberry Pi.A practical guide to home automation using open source tools.6 open source tools for staying organized.An introduction to programming with Bash.A guide to building a video game with Python.
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