The ultra-compact Pico-pH is a fiber-optic pH meter intended for OEM applications based on the proven high-precision Redflash technology from PyroScience. Among its stand-out features are low power ...

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 ...

Connect the pH sensor module to the Arduino: VCC to 5V GND to GND AO (Analog Output) to A0 (Analog Pin 0) If using an LCD display, connect it according to its datasheet or use an I2C LCD for easier ...

Optional Connections (if you need to control the PH4502C module features): PH4502C T1/T2: These are used for calibrating the pH sensor and might require additional wiring depending on your calibration ...

We'll show you the exact wiring connections, provide working arduino soil moisture sensor code, and guide you through common troubleshooting scenarios that every maker encounters. In this article, we ...