By counting the pulses from the output of the sensor, we can easily calculate the water flow rate (in litre/hour – L/hr) using a suitable conversion formula. The Arduino Sketch (code) uses the ...

But probably the most interesting part of the project is a design for a non-invasive flow sensor that you can simply ... thanks to a power-efficient Arduino Pro Mini and a BlueTooth Low Energy ...

He has a very nice $290 laser particle counter, but was really curious how the $12 sharp sensor he found would stack up. To find out, he plugged it into an arduino ... the smoke flow into the ...