Hardware Capabilities

5 Optocoupler Inputs: 12V-24V isolated inputs using PC817/PC827 optocouplers

4 SSR Outputs: 230V AC control via solid-state relays (up to 2A per channel)

Galvanic Isolation: Complete electrical isolation between inputs/outputs and MCU

Industrial Grade: Overcurrent protection and status monitoring

ESP32 WROOM-32D: Dual-core 32-bit processor with WiFi and Bluetooth capabilities

Software Features

Modern Web Interface: Responsive design with real-time control and status monitoring.

Easy Network Access: Access the web interface using the friendly address http://autoboard.local on your local network, thanks to mDNS support.

Robust WiFi Connectivity:

Station (STA) Mode: Connects to your existing Wi-Fi network for seamless integration.

Access Point (AP) Mode: Falls back to an access point (Auto_Board_Setup) if no saved credentials are found, allowing for easy initial configuration.

Automatic Reconnection: Persistently tries to connect to the configured Wi-Fi network.

Timer Control: Set automatic timers for each output (up to 24 hours).

Real-time Monitoring: Live I/O status updates every 2 seconds.

FreeRTOS Integration: Multi-tasking with proper resource management for stable, long-term operation.

Comprehensive Logging: Detailed debug information via the serial console for easy troubleshooting.

🏗️ Hardware Configuration

GPIO Pin Mapping

📥 Input Pins (12V-24V, Active LOW)

Input 1: GPIO 4

Input 2: GPIO 5

Input 3: GPIO 18

Input 4: GPIO 19

Input 5: GPIO 21

📤 Output Pins (230V SSR Control, Active HIGH)

Output 1: GPIO 12

Output 2: GPIO 13

Output 3: GPIO 14

Output 5: GPIO 26

💡 Status LED

Status LED: GPIO 2 (Built-in LED)