virtvic Posted August 25, 2022 Share Posted August 25, 2022 Hi there, I'm working on making some arcade joysticks for the PC Engine / Turbo Grafx. They will be the same form factor as a bunch of my other sticks - I already have a working circuit to interface the PC Engine cable to the stick & buttons, but I'd like to add the 2 speed autofire to both buttons, like the original joypads. Trouble is, I'm no electronics expert at all (I found the circuit online and made some on perfboard) Can anyone help me out with a circuit (or better still a pcb design) to incorporate the controls and turbo fires into one? This is my circuit so far, an LS157 and 4 resistors. I think the original pads use a 74HC163 for the autofire pulses. Quote Link to comment Share on other sites More sharing options...
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