Introduction The HC-SR501 PIR (Passive Infrared) Motion Sensor is one of the most widely used sensors for detecting human and animal movement. It works by detecting changes in infrared radiation
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Introduction A trimmer potentiometer is a small adjustable resistor used to vary voltage levels in a circuit. The ESP8266 has an ADC pin (A0) that can read the voltage from
Introduction A potentiometer is a variable resistor that allows you to adjust resistance manually. A trimmer potentiometer (or trimpot) is a small, adjustable version usually used on PCBs for fine-tuning
Introduction A relay module is an electrically operated switch that allows the ESP8266 to control high-voltage devices like lamps, fans, and home appliances using its low-voltage GPIO pins. Since ESP8266
Introduction The MQ-2 gas sensor is one of the most popular sensors used in embedded systems and IoT projects for detecting harmful gases in the air. It can detect gases
Introduction The DHT11 and DHT22 are widely used sensors to measure temperature and humidity. In this tutorial, you’ll learn how to: Introduction The DHT11 and DHT22 are widely used sensors
Introduction A push button is a simple switch that connects or disconnects a circuit when pressed. With ESP8266, push buttons are used for: In this tutorial, we’ll learn how to:
Introduction Buzzers are small devices that produce sound. They are often used in alarms, timers, and notification systems. With ESP8266, you can control buzzers to create beeps, tones, and even
Introduction The ESP8266 does not have a true analog output, but it uses PWM (Pulse Width Modulation) to simulate it. With PWM, you can adjust the LED brightness smoothly instead
Introduction RGB LEDs are special LEDs that combine Red, Green, and Blue in one package. By adjusting the brightness of each color, you can create millions of colors 🌈. In
