Because the switches are analog, they are bidirectional. That is, it isn’t really connecting one output to 32 inputs. It is more like a 32-position switch that connects a single pin out of 32 to ...

[hamblin.joe] wanted to do a simple project for kids along these lines, so whipped up a neat design using analog meters to display the time. The build relies on that old stalwart, the Arduino Uno ...