So a Turbidity Meter holds one light source that is directed through a water sample ... sensor lifted from a defunct washing machine, the ordered Gravity Arduino Turbidity Sensor from DFRobot arrived ...

Because his blinkenlight shield can be used as a light sensor, all that ... with the Arduino running at 16 MHz, a photon will travel 19 meters in one clock cycle. Even with some very clever ...

Now we can stepped into the light with our favorite microcontroller Arduino! Since a vast number of analog/digital ambient light sensors/light sensor modules are now available at reasonable price, ...

[Richard’s] DIY air quality meter ... direct light, but only light reflected by the passing by dust particles, to reach the photodiode. An accurately trimmed amplifier within the sensor package ...