🔥 BLE Jammer using ESP32 and NRF24 🔥

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![🚀 BLE Jammer]

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🌟 Overview

This project is an educational-only BLE jammer that disrupts Bluetooth Low Energy (BLE) communication using the ESP32 microcontroller and NRF24L01 modules. It employs multiple SPI buses (VSPI and HSPI) to enhance jamming efficiency by simultaneously transmitting on different channels.

🚨 Disclaimer: This project is for educational purposes only. It is intended to demonstrate the vulnerabilities of wireless communication systems. Any misuse or application in unauthorized environments is strictly prohibited.

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✨ Features

• 🔄 Dual SPI Operation: Uses both HSPI and VSPI buses for simultaneous transmission.
• ⚡ Channel Hopping: Random or incrementally shifting channels to improve effectiveness.
• 🖥️ OLED Display: Displays status messages and operational feedback.
• 🕹️ Debounced Toggle Switch: Controls between fixed and random channel modes.
• 🔋 Efficient Power Handling: Reduces power usage by disabling unused peripherals.

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🛠️ Components

• 🧠 ESP32 Development Board
• 📡 NRF24L01+ Radio Modules (x2)
• 📺 SSD1306 OLED Display (128x32)
• 🔘 Push Button / Toggle Switch

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🔗 Wiring

OLED Connection

Pin	Function	ESP32 Pin
SDA	I2C Data	D21
SCL	I2C Clock	D22

NRF24L01 SPI Pin Configuration

SPI Bus	Function	NRF24 Pin	ESP32 Pin
HSPI	CE	26
	CS	15
	SCK	14
	MISO	12
	MOSI	13
VSPI	CE	4
	CS	5
	SCK	18
	MISO	19
	MOSI	23

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📦 Software Dependencies

• Arduino IDE
• Libraries:
  • RF24 by TMRh20
  • ezButton
  • U8x8lib for OLED

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🚀 Installation and Setup

1. Install Required Libraries:
   • In Arduino IDE, go to Sketch > Include Library > Manage Libraries and search for the listed libraries.
2. Connect Components as per the wiring table.
3. Upload the Code:
   • Copy the provided code into the Arduino IDE.
   • Select the correct board (ESP32 Dev Module) and COM port.
   • Click on Upload.

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🎮 Usage

1. Power On the device.
2. The OLED displays:
   • Initialization Messages
   • Status of VSPI and HSPI Jammers
3. Toggle Switch Modes:
   • Fixed Channel Mode: Increments and decrements channels within set limits.
   • Random Channel Mode: Randomizes channel selection and delay.
4. Monitor Serial Output for additional status messages and debug logs.

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🖥️ OLED Interface Example

BLE JAMMER 
...............
EducationalOnly

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⚙️ Functions

one()

• Randomly selects a channel for both SPI buses and introduces a randomized delay.

two()

• Increments and decrements the channel numbers, flipping direction at predefined limits.

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🛠️ Customizations

• Channel Range: Adjust ch and ch1 limits.
• SPI Speed: Modify RF24 initialization to change SPI clock speed.
• Display Text: Modify OLED messages for personalized feedback.

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🛑 Troubleshooting

🛑 Issue	💡 Solution
No OLED Output	Check I2C connections and ensure the correct address.
Jammer Not Starting	Verify SPI wiring for NRF24 modules.
WiFi/Bluetooth Not Disabled	Ensure esp_wifi_stop() and esp_bt_controller_deinit() are called.

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🏷️ License

This project is licensed under the MIT License.

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🌍 Contributing

Pull requests are welcome! Please open an issue first to discuss any changes.

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✨ Enjoy Exploring Wireless Security with Responsibility!