Ir controller

✋ Gesture-Based IR Controller

This project is a compact, SMD-based gesture-controlled infrared (IR) transmitter, powered by the RP2040 microcontroller and the APDS-9960 gesture sensor. It enables hands-free control of IR-enabled devices like TVs, LED strips, or home automation receivers, all without needing Bluetooth, Wi-Fi, or pairing.

📦 Features

• 🔌 Powered via USB-C (Power-only 6P connector)
• 🧠 Built on the RP2040 dual-core microcontroller
• 👋 Integrated APDS-9960 gesture/proximity sensor
• 📤 High-speed IR LED transmission using PWM (38kHz)
• 🔘 Manual Bootsel and Reset buttons for development
• 🌈 Optional status LED for gesture response indication
• 🔧 Fully SMD design, suitable for hand or reflow soldering

🔧 Hardware Overview

🧠 Core MCU

• RP2040 with external QSPI Flash (if required)
• Powered via onboard AMS1117-3.3 LDO

👋 Gesture Input

• APDS-9960 optical sensor (I2C)
• INT pin routed to GPIO for real-time gesture notifications
• Pull-up resistors (10kΩ) on SDA and SCL
• Decoupling capacitor (0.1uF) for power stability

📤 Infrared Output

• High-efficiency IR LED
• Current-limiting resistor (100Ω)
• Driven directly from a GPIO at 38kHz using PWM

🧪 Debug / Control

• SW1: Bootsel button → GPIO0 (active-low)
• SW2: Reset button → RP2040 RUN pin (active-low)
• D1: Optional status LED (330Ω resistor)

🔋 Power Regulation

• USB-C (Power Only) input
• AMS1117-3.3 LDO regulator
• 10uF output capacitor (C2)
• Pull-downs (5.1kΩ) on CC1 and CC2 for proper USB-C sink negotiation

📐 GPIO Assignments

🛠️ Component Footprints (SMD)

🧠 Logic Flow

// Pseudocode overview
setup() {
    configure_i2c();
    configure_pwm(38kHz);  // for IR LED
    attach_interrupt(GESTURE_INT);
}

loop() {
    if (gesture == RIGHT_SWIPE) {
        send_ir_code(POWER);
    }
    else if (gesture == UP_SWIPE) {
        send_ir_code(VOLUME_UP);
    }
    // etc.
}

📝 Bill of Materials (Simplified)

📁 Folder Structure

/Gesture-IR-Controller/
├── schematic.kicad_sch
├── pcb.kicad_pcb
├── symbols/
├── footprints/
├── firmware/  (optional)
└── README.md

Preview

📜 License

This project is released under the MIT License.
Use it freely, improve it, deploy it — just give credit where it’s due.

Built with love by Akmal Nazir