I first heard about and took a look at Relay, a screenless phone for kids back in 2018. The small walkie-talkie device is incredibly simple and easy to use and made it easy to communicate with my own ...
What’s one to do with some nice little relays of questionable pinout, and prototyping board? How about a quietly clicky 4-bit counter using relay logic with tons of buttons? [Agatha Mallett] ...
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