Category Archives: Tests

I kept this sensor for last, as I think ORP is the most complicated concept to grasp. In a few words, the meter measures the potential for oxidation in a solution in millivolts. In general, when pH is low, ORP is high, and when pH is high, ORP is low. Here is the setup: ThisContinue reading “[TESTS] ORP Sensor Understood – 09/06/2021”

The other sensor needing a calibration is the EC meter. It’s the same exact method as for the pH sensor. Here is the setup: Once again, just like with the pH sensor, DFRobot has coded some sample scripts [1] to calibrate the EC meter, but they are designed for AVR boards, so we can’t useContinue reading “[TESTS] EC Sensor Calibration – 08/06/2021”

The first sensor I decided to calibrate is the pH meter, since I figured that pH is a relatively easier concept to grasp than the others. Here is the setup: DFRobot, the open source creator of these sensors, provides sample code [1] designed to calibrate the pH sensor but it only works on AVR boards,Continue reading “[TESTS] pH Sensor Calibration – 06/06/2021”

Today I tested the temperature and turbidity sensors simultaneously, here is how I set them up: On the MKR1000, black and red wires are connected to GND and VCC (3.3V output) respectively. Each sensor has three wires, two for the current (+ and -) and one for sending data, which is expressed in voltage. TheContinue reading “[TESTS] Temperature and Turbidity – 05/06/2021”