On the electronics and interfacing side of things, [John] utilises the Arduino pro micro for its copious analog inputs and USB functionality. A nice feature of this board is that it’s based on ...

As the Arduino Nano and Micro cost the same ($24.90), deciding ... such as those that use nine to twelve analog inputs and at most seven PWM outputs. If you're working with an SPI component ...

[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 ...