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.

Arduino library for working with the DFRobot 24GHz millimeter-wave Human Presence Detection sensor (SEN0395). - MaffooClock/DFR_Radar ...

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 ...