Basic

How to blink an LED

How to fade an LED

How to use an RGB LED

How to use a Potentiometer

How to use a Photoresistor

How to use a Buzzer

How to use the Passive buzzer module

How to use an LCD

Learn Arduino with Ardumotive Shield

Arduino UNO Learning Shield by Ardumotive

Video Presentation

Seeed Studio - Grove Shield Tutorials

LED Socket Kit

Buzzer

Button with buzzer

Rotary Angle Sensor

LCD RGB Backlight and Temp Sensor

Touch Sensor

Sound Sensor

Barometer Sensor (BME 280) with LCD RGB Backlight

Light Sensor with LCD RGB Backlight

Displays

How to use a 7 Segment Display

I2C LCD

8 Digit 7 Seg Display with MAX7219 IC Module

4-Digit 7 Segment Display 74HC595 module

2-Digit 7 Segment Display 74HC595 module

Sensors

How to use the DS18B20 temp sensor

How to use the TMP36 temp sensor

How to use the MQ2 Gas Sensor

How to use the DHT-22 Temp & Humidity

How to use the DHT-11 Temp & Humidity

How to use the HMC5883L Compass

How to use the HC-SR04 Ultrasonic Sensor

How to use a flex sensor

How to use a Force Sensitive Resistor

How to use a Vibration Sensor - Shake Switch

BMP 280 Pressure and Temperature Sensor

Water Flow Sensor

Soil hygrometer module

Sharp IR (GP2Y0A41SK0F)

TSL2561 LUX Sensor

Magnetic contact switch (door sensor)

DHT21 Temp/Hum Sensor

Real Time Clock DS1307 (i2c)

MFRC-522 NFC/RFID Module - Tag/Card Reader

Piezo Vibration Sensor

PIR Motion Sensor

Raindrop Sensor Module

Flame Sensor

RGB LED WS2812 5050

​Circuit simulator and PCB design and Production

EasyEDA Introduction - Tutorial (+video)

Introduction of PCB Manufacturer - JLCPCB

Arduino IDE

Motors & Motor Drivers

How to use a Servo Motor

How to drive a DC motor with Transistor

How to use the L293D DC motor driver

How to use the L298 module motor driver

Shields - soon online

How to use Breadboard Shield

How to use WizFi 210 WiFi Shield

How to use 2G SIM900 GSM Shield

How to use Can-Bus Shield

How to use Wiz550 Ethernet Shield

Other stuff

How to use a Numpad/Keypad

Multiple Buttons on 1 Analog Pin

How to use a Shift Register 74HC595

How to use the TEA5767 FM Radio Module

How to use the Si4703 FM Radio Module + RDS

Arduino Voice Recognition Serial Module

xBee S1 as a transmitter and receiver