Sensor Turbidity

Turbidity

Turbidity is a basic measurement of water quality. It measures the particles that block light, whether organic (algae) or inorganic (sediment).

Hardware

We are currently using the DF Frost turbidity sensor. This gives an analog readout and is designed for use with Arduino, however by connecting it to a ADC (Analog to Digital converter) it will convert the voltage output to a long number.

The DF Frost sensor is cheap and easy to get started with, though extracting the output and converting it to NTU units may be a challenge. Long term we may need to look at a better DIY solution (see below), or more commercial solutions.

Software

Follow the Adafruit instructions for ADC software, or use their software as a starting point.

Resources

• DIY Sensor
• Good technical read and design
• Another solid design