Sensors act as "electronic senses" that connect a controller to its surrounding world, converting a physical property like light, heat, or motion into an electrical signal the Arduino can understand. This guide opens our series on getting to know them with four fundamental types.
LDR Light-Dependent Resistor
A resistor whose value changes inversely with the intensity of light falling on it, making it useful for automatic lighting systems and sun tracking — we detailed its use in a standalone article.
PIR Motion Sensor
Relies on infrared light to detect changes in heat given off by warm objects, sensing motion by monitoring fluctuations in the surrounding thermal radiation — we built more than one security project on it in earlier articles.
Infrared Receiver
Used in remote-control applications, receiving signals from infrared transmitters, and it's the component usually found inside TV remote receivers — we detailed its use for controlling an RGB lamp in a standalone article.
Tilt Sensor
Detects angular changes and shifts in an object's orientation, used by gaming devices and smartphones for motion-responsive features — we detailed its simple mechanical version in a standalone article.
You can find all of these sensors at Juthour Tech.
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