Hall effect sensors are used to detect the magnetic field. A simple application example is presented with the A3144 example and Arduino integration.

Arduino Pro Mini 3.3V - 8 MHz - Atmega328 is a small-sized microcontroller board with low power consumption. It features 14 digital GPIO pins, 8 analog input pins, and operates at a 3.3V logic level. Ideal for projects requiring compactness and low power requirements, the Pro Mini requires an external USB-TTL converter for programming.

Wi-Fi? ESP32. 5 V shields? Arduino. Clear 2025 guide with table: pick the perfect board for IoT, cameras, low-power, DSP

Technical information and usage areas about HC-05 and HC-06 Bluetooth modules.

Designing an Air Quality Measurement System - Measurement with MQ-135 and DHT-11.