The ESP32 Expansion Board is designed to make prototyping and development easier by expanding the pins of an ESP32 Dev Module or ESP32-WROOM-32 board. Here’s a detailed overview:
ESP32 Expansion Board Features
This board is often called a 38-pin ESP32 breakout board, and here's what it includes:
Main Features:
Compatible with ESP32 DevKit V1 38-pin
Color-coded pin rows:
🔴 Red: 3.3V power
⚫ Black: GND (Ground)
🟡 Yellow: GPIO signal pins
Two USB ports:
Micro USB and USB-C for power input (do not use both at the same time)
Barrel Jack Input: Accepts DC 5V–12V input via the power jack
Voltage Regulation:
Has onboard regulators like AMS1117 to supply 3.3V and 5V to the ESP32
BOOT and EN (RESET) buttons: Used for uploading and restarting programs
How to Use It
Insert ESP32 DevKit Board into the center 38-pin female header.
Connect components (sensors, relays, displays, etc.) to the side headers:
Use jumper wires to access GPIOs, GND, or 3.3V.
Power Options:
USB-C or Micro USB (5V)
Barrel Jack (DC 5V–12V)
Upload code via USB: Connect USB to PC, open Arduino IDE or PlatformIO, and program your ESP32.
Example Applications
Smart home automation
IoT sensors and actuators
Robotics control
Real-time monitoring projects
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