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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] ...

It may be the last gasp of summer here in the Northern Hemisphere, but it’s always cold somewhere, whether it’s outdoors or inside. If you suffer from cold, stiff hands, you know how difficult it can ...

// Reads the shield's five-button keypad via the A0 analog resistor ladder and displays which button is currently pressed on the LCD. // Buy this module: https ...

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