Safe, clean drinking water is a scarce resource that shouldn’t be wasted. But it’s not always easy to see how much you’re using when you turn on the tap: is it one liter a minute? Is it ten? How much ...

A peak flow meter is a user-friendly, portable device that helps measure the ability of the lungs to expel air. It estimates peak expiratory flow rate which is a measure of how rapidly air can be ...

Hackaday readers don’t need an introduction to the Arduino. But in industrial control applications, programmable logic controllers or PLCs are far more common. These are small rugged devices that can ...