As seen in the picture above, you’ll sacrifice 2 analog pins ... could be used with many Arduino’s in parallel if the situation called for it. The code for this simple hack is included ...

[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 ...

Most Arduino boards have an ADC chip with a 10-bit resolution that ... is that they can span a wide range of complexity, from simple applications like an automatic watering system to more ...