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An Arduino Pro mini handles the selection between outputs by driving a selection of relays with appropriate timing. An interesting detail here is what [Lajt] calls a ‘sacrificial relay’ in the ...
Arduino is a company that’s best known for making small, programmable microcontroller boards. But the new Arduino Pro Portenta X8 ... features an NXP i.MX 8M Mini 1.8 GHz quad-core ARM Cortex ...
Everything is driven by an Arduino Pro Mini. The lights are APA106 LEDs; a 4-pin through-hole package version of the WS2812 pixels. You could easily substitute these for the surface mount ...