🚀 HDD/SSD Switch Controller with ESP32

🎯 Project Overview

This project is an advanced HDD switch controller designed to seamlessly toggle between multiple hard drives (SSDs/HDDs) connected to a PC. It leverages the ESP32 microcontroller to manage power, data connections, and cooling, providing a versatile solution for multi-boot setups.

🛠️ Key Features

• Multi-Drive Switching: Supports two or more HDDs/SSDs with quick, reliable switching.
• ESP32 Control: Manages GPIOs for power and data line control.
• Reset Trigger Integration: Automatically resets the PC after switching drives.
• Temperature Sensor: Uses the DS18B20 sensor for real-time temperature monitoring.
• Fan Control: Adjusts fan speed based on temperature readings to prevent overheating.
• Power Regulation: Built-in LM2576 DC-DC step-down module ensures stable power delivery.
• Voltage Spike Protection: Includes a TVS diode to safeguard sensitive electronics.

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🔧 Components Used

• ESP32 Microcontroller - Brain of the system
• NMOS Transistors - Power switching
• SN74LVC1G19DC - Logic control for data line switching
• DS18B20 Temperature Sensor - Real-time temperature monitoring
• LM2576 DC-DC Converter - Stable power regulation
• SATA Connectors - Interface with HDD/SSD
• LEDs - Status indicators
• TVS Diode - Protection from voltage surges

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🖥️ How It Works

1. Power Control: The ESP32 controls NMOS transistors to toggle power to the selected drive.
2. Data Line Switching: The SN74LVC1G19DC chip ensures only one drive remains active.
3. Reset Pulse: A low pulse is sent to the PC’s reset pin, forcing a reboot to recognize the newly selected drive.
4. Temperature Monitoring: DS18B20 reads temperatures, and the fan adjusts speed accordingly.
5. Voltage Protection: TVS diode shields the system from sudden voltage spikes.

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🚀 Planned Future Improvements

• Web Control Panel: Control drive switching from a smartphone or computer.
• OLED Display: Display real-time drive status and temperatures.
• Automatic Drive Detection: Smarter detection and initialization of connected drives.
• Power Efficiency Mode: Reduce power consumption when idle.
• Error Handling: Advanced diagnostics and error reporting.

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🛠️ Setup Instructions

1. Clone this repo to your local machine:

   git clone https://github.com/yourusername/hdd-switch-controller.git

2. Flash the ESP32 with the provided code:

   esptool.py --port /dev/ttyUSB0 write_flash 0x1000 firmware.bin

3. Wire the components according to the schematic provided.
4. Power on, and start switching drives effortlessly!

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📚 What I’ve Learned

This project helped me master:

• ESP32 microcontroller programming and GPIO control
• MOSFET transistors for power switching
• SATA data line manipulation
• Temperature monitoring and fan control
• Power regulation and circuit protection

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🔥 Project Status

✅ Current Progress: The project is 85% complete — core functionalities are operational, but features like web control, dynamic drive detection, and OLED display integration are still in progress.

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🎯 My Goal with This Project

I’m building this project as a showcase of my advanced electronics and programming skills. It’s part of my portfolio to demonstrate expertise in microcontroller systems and embedded design — aiming to strengthen my application for engineering scholarships and embedded systems programs.

If you’re a recruiter or a professor looking for passionate, hands-on problem solvers — this is what I can do! 💪

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✨ Stay tuned for updates and enhancements as I push this project to 100%!