PinLab › Components
ESP32 components — pins and wiring
Every component for ESP32 projects: LEDs, sensors, motors, displays. For each one: how it works, every pin and where it connects.
ESP32 DevKit V1
microcontroller with WiFi and Bluetooth
15 pins explained →
Breadboard
wiring without soldering
4 pins explained →
Jumper wires
M–M, M–F, F–F
3 pins explained →
LED
light-emitting diode 5 mm
2 pins explained →
Resistor
220 Ω, 1 kΩ, 10 kΩ…
2 pins explained →
Capacitor
ceramic and electrolytic
3 pins explained →
RGB LED
three colours in one, common cathode
4 pins explained →
Push button
tactile switch 6×6 mm
2 pins explained →
Potentiometer
10 kΩ variable resistor
3 pins explained →
Passive buzzer
piezo speaker
2 pins explained →
DHT22 / AM2302
temperature and humidity sensor
4 pins explained →
HC-SR04
ultrasonic distance sensor
4 pins explained →
Servo motor SG90
motor with angle control 0–180°
3 pins explained →
Relay module 5 V
switch for big loads
6 pins explained →
OLED display 0.96″ (SSD1306)
128×64 pixels, I2C
4 pins explained →
PIR sensor HC-SR501
motion detector
3 pins explained →
Photoresistor (LDR)
light sensor
2 pins explained →
L298N dual H-bridge
DC motor driver
8 pins explained →