Years ago, after running out of breadboard space yet again, I reimplemented the ZM1 6502 computer in a Xilinx Spartan-3AN FPGA on a Spartan-3 Starter Kit board.
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Now that I’ve reversed engineered the Rako protocol, I decided to redesign my touch switch controller so that it transmits Rako commands directly, rather than going via a bank of relays and an official Rako radio module. As the picture above shows, this results in a much smaller and simpler device, and also gives me a lot more flexibility in how the controller can interact with the lights.
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