This article presents the calibration and the analysis of the data being gathered by the proposed alternative low-cost Microcontroller-based Sensor Device that is capable of measuring several ...

// Define WiFi module pins const int espTxPin = 2; // Connect ESP TX to Arduino pin 2 const int espRxPin = 3; // Connect ESP RX to Arduino pin 3 // Create SoftwareSerial object for communication with ...

When light passes through a certain amount of water, the amount of light penetration depends on the amount of dirt in the water. As the amount of dirt increases, the light that penetrates the water ...

Note that with the “DFR” sensor, we get a signal output very close to VCC (in digital mode) when the sensor is not submerged or is in clear water (and a bit lower than that in analog mode). Here’s one ...