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 will host networking receptions, be featured in the keynote programming, and showcase the PRO line of industrial-grade hardware at Booth #1346. The full schedule of Arduino events at ...

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 ...