A rotary encoder converts the angular position and rotation speed of a shaft into electrical signals that Arduino can count... Continue reading
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Category: Sensors & Modules
Sensor tutorials, module guides, and comparison reviews.
Infrared obstacle sensors are the building blocks of line-following robots, edge detection systems, and proximity triggers. These tiny modules emit... Continue reading
A rain sensor module detects the presence of water droplets on its surface, giving Arduino a simple signal to trigger... Continue reading
When ultrasonic sensors hit their limits — range too short, accuracy too coarse, outdoor sunlight causing interference — LiDAR sensors... Continue reading
The BMP280 barometric pressure sensor by Bosch measures atmospheric pressure with ±1 hPa accuracy and temperature with ±1°C precision. These... Continue reading
The TCS3200 colour sensor detects the colour of objects by shining white LEDs onto a surface and measuring the reflected... Continue reading
A pH sensor connected to Arduino lets you measure the acidity or alkalinity of water, soil extracts, and nutrient solutions... Continue reading
The ACS712 current sensor measures both AC and DC current flowing through a wire and outputs a proportional analogue voltage... Continue reading
An IMU (Inertial Measurement Unit) sensor measures acceleration, rotation, and sometimes magnetic heading — the fundamental data needed for drones,... Continue reading
Picking the right temperature sensor for your Arduino project means understanding how DS18B20, DHT22, BME280, and LM35 differ in accuracy,... Continue reading
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