Learn IoT Components

Learn how the 7-Segment Display works with Arduino. This guide covers pinout, wiring, segment mapping, and code to show numbers and decimal points on common cathode or anode displays.

Learn how the Analog Joystick works with Arduino. This guide explains how to read X and Y analog values, detect button presses, and use dead zones for smooth directional control in your projects.

Learn how the Arduino Mega works with its 54 I/O pins, 16 analog inputs, and 4 hardware serial ports. This guide covers the board layout, pinout, and wiring for larger projects that need more connections than a standard Uno.

Learn how the Arduino Nano works as a compact breadboard-friendly board. This guide covers the pinout, power options, and wiring for building small projects that still use the full Arduino workflow.

Learn how the Arduino Uno works as the most popular starter board for electronics. This guide covers the ATmega328P pinout, power options, digital and analog I/O, and wiring for sensors, LEDs, and other beginner-friendly components.

Learn how the Biaxial Stepper works with Arduino. This guide covers the two-shaft layout, coil pin mapping, and code to control the outer and inner shafts independently using the Stepper library.

Learn how the Big Sound Sensor works with Arduino. This guide covers analog audio level detection, digital threshold output, and wiring for clap triggers, noise monitors, and sound-reactive projects.

Learn how a Buzzer works with Arduino. This guide covers tone generation, melodies, PWM control, and wiring for alerts, timers, and sound-based feedback in your projects.

Learn how the DHT22 temperature and humidity sensor works with Arduino. This guide covers the single-wire digital protocol, wiring, library setup, and reading accurate environment data for weather stations and room monitors.

Learn how the DIP Switch 8 works with Arduino. This guide covers binary input reading, pull-up resistor configuration, and using multiple switches for address selection and mode control.

Learn how the DS1307 real-time clock works with Arduino. This guide covers I2C communication, setting and reading time, battery backup, and wiring for clocks, data loggers, and scheduled events.

Learn how the ESP32-C3 DevKit works with Arduino and ESP. This guide covers the RISC-V processor, Wi-Fi and Bluetooth LE features, pinout, and wiring for IoT projects that need wireless connectivity.

Learn how the Flame Sensor works with Arduino. This guide covers infrared flame detection, analog and digital output modes, sensitivity adjustment, and wiring for fire alert and safety monitoring projects.

Learn how the MQ2 Gas Sensor works with Arduino. This guide covers combustible gas detection, analog concentration readings, digital threshold output, and wiring for air quality and leak alert projects.

Learn how the HC-SR04 ultrasonic sensor works with Arduino. This guide covers trigger and echo timing, distance calculation, wiring, and using sound pulses to measure object distance for parking sensors and obstacle avoidance.

Learn how the Heart Monitor pulse sensor works with Arduino. This guide covers photoplethysmography, analog signal reading, heartbeat detection, and wiring for health and biometric monitoring projects.

Learn how the HX711 load cell amplifier works with Arduino. This guide covers the 24-bit ADC interface, wiring for weight sensors, calibration, and reading mass measurements for scales and force detection projects.

Learn how the ILI9341 TFT display works with Arduino. This guide covers SPI wiring, color graphics, Adafruit GFX library setup, and drawing text, shapes, and images for dashboards and menu interfaces.

Learn how the IR Receiver works with Arduino. This guide covers 38 kHz infrared signal decoding, NEC protocol, remote control library setup, and wiring for wireless command input in your projects.

Learn how the IR Remote works with Arduino. This guide covers 38 kHz infrared signal transmission, NEC protocol encoding, and pairing with an IR receiver for wireless control of your Arduino projects.

Learn how the KS2E-M-DC5 relay works with Arduino. This guide covers electromagnetic switching, coil driving with a transistor, wiring for high-load control, and safe isolation for home automation projects.

Learn how the KY-040 rotary encoder works with Arduino. This guide covers quadrature signal reading, direction detection, built-in pushbutton input, and wiring for menu navigation and value adjustment controls.

Learn how the LCD1602 display works with Arduino. This guide covers the HD44780 controller, 4-bit and I2C wiring, printing text and numbers, and creating custom characters for status displays and menus.

Learn how the LCD2004 display works with Arduino. This guide covers the 20x4 HD44780 controller, I2C adapter wiring, printing longer messages, and building multi-line menu interfaces for dashboards and data displays.

Learn how the LED works with Arduino. This guide covers polarity, forward voltage, current-limiting resistors, and wiring for status indicators, blink patterns, and visual feedback in beginner electronics projects.

Learn how the LED Bar Graph works with Arduino. This guide covers driving multiple LED segments, PWM brightness control, and using the display as a level meter, progress bar, or analog sensor readout.

Learn how the LED Ring works with Arduino. This guide covers WS2812 NeoPixel control, color mixing, animation effects, and wiring for circular displays, status rings, and decorative lighting projects.

Learn how the Membrane Keypad works with Arduino. This guide covers matrix scanning, row and column wiring, key detection, and building numeric input pads for passcode entry and menu navigation.

Learn how the MicroSD Card module works with Arduino. This guide covers SPI communication, file reading and writing, data logging, and wiring for storing sensor data, configuration files, and large datasets on removable flash storage.

Learn how the MPU6050 motion sensor works with Arduino. This guide covers I2C communication, accelerometer and gyroscope data reading, temperature sensing, and wiring for orientation and movement tracking projects.

Learn how the NeoPixel Matrix works with Arduino. This guide covers WS2812 addressable LED control, 2D coordinate mapping, animations, and wiring for colorful displays, icon panels, and scrolling text effects.

Learn how the NTC Temperature Sensor works with Arduino. This guide covers thermistor resistance-to-temperature conversion, voltage divider circuit, analog reading, and wiring for temperature monitoring and environment sensing.

Learn how the Photoresistor Sensor works with Arduino. This guide covers LDR light detection, analog brightness readings, digital threshold output, and wiring for automatic lights, daylight sensors, and light-triggered projects.

Learn how the PIR Motion Sensor works with Arduino. This guide covers passive infrared detection, sensitivity and time delay adjustment, wiring for motion-triggered lights, alarms, and automatic room monitoring.

Learn how a Potentiometer works with Arduino. This guide covers voltage divider circuits, analog reading with analogRead(), and wiring for knob controls, dimmers, volume adjustment, and sensor calibration inputs.

Learn how a Pushbutton works with Arduino. This guide covers pull-up and pull-down resistors, debouncing, state detection, and wiring for triggers, buttons, and user input in beginner electronics projects.

Learn how Resistors work with Arduino. This guide covers Ohm's Law, current limiting for LEDs, pull-up and pull-down configurations, voltage dividers, and choosing the right resistor value for your circuits.

Learn how an RGB LED works with Arduino. This guide covers common cathode and anode wiring, PWM color mixing, producing millions of colors, and creating smooth gradient and color cycle effects.

Learn how the Rotary Dialer works with Arduino. This guide covers pulse counting, rotary signal decoding, and wiring for vintage-style numeric input, interactive art, and retro project controls.

Learn how a Servo motor works with Arduino. This guide covers PWM signal control, the Servo library, angle positioning, and wiring for robotic arms, pan-tilt mounts, door locks, and motion projects.

Learn how a Slide Potentiometer works with Arduino. This guide covers linear voltage division, analog reading, and wiring for slider controls, audio mixing, brightness adjustment, and position-sensing input.

Learn how a Slide Switch works with Arduino. This guide covers SPDT switch wiring, digital state reading, pull-up configuration, and using switches for on-off control, mode selection, and user input.

Learn how the SSD1306 OLED display works with Arduino. This guide covers I2C and SPI wiring, the Adafruit SSD1306 library, drawing text and shapes, and creating compact status displays for your projects.

Learn how a Stepper Motor works with Arduino. This guide covers bipolar coil control, step sequencing, the Stepper library, and wiring for precise positioning, rotation control, and motion projects.

Learn how a Tilt Switch works with Arduino. This guide covers orientation detection, digital state reading, debouncing, and wiring for tilt-activated alerts, motion-triggered effects, and game controllers.

Learn how to use a breadboard for Arduino prototyping. This guide covers the internal row connections, power rail layout, and best practices for building circuits without soldering.