* according to the signal sending by your own pH probe if you don't use the DFRobot pH sensor kit probe * same circuit with different probe return different voltage value for buffer4.0 or buffer 7.0 ...

This project utilizes the DFRobot SEN0249 pH Sensor with an ESP32 microcontroller to measure pH levels. The code is written in C++ using the PlatformIO framework within the Arduino environment. The ...

The pH of a solution can be determined using a pH meter or a pH indicator solution. The module utilises Hydrogen-ion activity also known as the “proton activity” for measuring pH of the liquid. This ...

Testing Arduino pH Tester. We have tried this Arduino pH meter by dipping it into pure water and Lemon water, you can see the result below. Pure Water: Lemon Water: This is how we can build a pH ...

We connected $\\mathbf{p H}$ sensor and solar cell into Arduino Board to control data transmission via red laser communication or popular known as visible light communication (VLC). The sensor was ...