📡 8-Channel Transmitter and Receiver with Trims using NRF24L01 and Arduino

This project demonstrates a wireless 8-channel transmitter and receiver system using the NRF24L01 module and Arduino Nano. The system is designed for remote control applications such as robotics, drones, and RC vehicles, providing trim functionality for fine adjustments.

🚀 Features

• 8-Channel Wireless Transmission using NRF24L01 at 2.4 GHz.
• Trim Functionality for fine control adjustments.
• EEPROM Storage to retain trim values after power cycles.
• Low-Latency Communication using SPI protocol.
• Customizable and Expandable for various remote control applications.

🛠 Components Used

Transmitter (TX)

• Arduino Nano – Main controller.
• NRF24L01 – Wireless transceiver.
• Joysticks & Potentiometers – Control inputs.
• Trim Buttons – Adjusts channel sensitivity.
• EEPROM Storage – Stores trim values.
• Power Supply – 3.3V regulator for NRF24L01.

Receiver (RX)

• Arduino Nano – Receives and processes signals.
• NRF24L01 – Wireless transceiver module.
• PWM Output Channels – Control servos, motors, or peripherals.
• Voltage Regulator (LD1117 3.3V) – Ensures stable power for NRF24L01.
• Capacitors & Resistors – For signal stability and power filtering.

🔧 Working Principle

1. Transmitter Side:

   • Reads joystick/potentiometer inputs.
   • Allows real-time trim adjustments.
   • Transmits control signals via NRF24L01 (2.4 GHz).

2. Receiver Side:

   • Receives signals from the transmitter.
   • Processes the signals and outputs PWM to control servos/motors.
   • Maintains stored trim settings using EEPROM.

📌 Applications

• Remote-Controlled Vehicles & Drones 🚁
• Robotic Arm Control 🤖
• Wireless Servo & Motor Control 🔧
• Customizable Game Controllers 🎮

⚙️ Installation & Setup

1️⃣ Wiring Connections

• NRF24L01 (Transmitter & Receiver)

• Joysticks & Trim Buttons (TX)

• PWM Output Channels (RX)

2️⃣ Code Upload

1. Install required Arduino libraries:

   Arduino IDE → Library Manager → Install "RF24" & "SPI"
   

🎯 Future Improvements

• 📺 LCD Display for real-time feedback.
• 🔋 Battery Optimization for longer runtime.
• 📶 Longer Range Modules like NRF24L01+ PA/LNA.

📜 License

This project is open-source under the MIT License