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Three Dollar EC - PPM Meter For Arduino - Calibration

Description:
A really cheap way to measure the ppm of fluids for arduino.Change the R1 Resistor and you can use it for a wide range of applications:-Aquaponics -Hydroponics-Drinking Water Contamination For Arduino Code go to:www.MichaelRatcliffe.comFor more Information see:-HackaDay-Element14

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