How to Use Camera Caddx Ratel 2 1200TVL with OSD: Examples, Pinouts, and Specs

The Caddx Ratel 2 1200TVL is a high-performance FPV (First Person View) camera designed for drone racing, freestyle flying, and other applications requiring high-resolution video. With its 1200TVL resolution, the camera delivers sharp and clear video quality, even in low-light conditions. It also features an integrated On-Screen Display (OSD) for overlaying real-time telemetry data, making it a versatile choice for FPV enthusiasts.

• FPV drone racing and freestyle flying
• Aerial photography and videography
• Robotics and remote-controlled vehicles
• Security and surveillance systems
• Applications requiring low-light performance and high-resolution video

Below are the key technical details of the Caddx Ratel 2 1200TVL camera:

The camera has a 4-pin connector for power, video output, and OSD control. The pinout is as follows:

1. Power Connection: Connect the VCC pin to a power source within the range of 5V to 40V. Ensure the power supply is stable to avoid damage to the camera.
2. Ground Connection: Connect the GND pin to the ground of your power source.
3. Video Output: Connect the VIDEO pin to the video input of your FPV transmitter or display device.
4. OSD Configuration: Use the OSD Control pin to connect to a UART interface for configuring the OSD settings. This can be done using a flight controller or a dedicated OSD configuration tool.

• Voltage Range: Ensure the input voltage is within the specified range (5V - 40V). Exceeding this range may damage the camera.
• Signal System: Switch between PAL and NTSC modes as needed for compatibility with your display or FPV system.
• Lens Protection: Avoid touching the lens directly to prevent smudges or scratches. Use a lens cap when the camera is not in use.
• Low-Light Performance: The camera is optimized for low-light conditions, making it ideal for night flying or dim environments.
• OSD Configuration: Use the UART interface to customize the OSD layout and telemetry data displayed on the screen.

Below is an example of how to connect the camera to an Arduino UNO for basic UART communication to configure the OSD:

• Camera OSD Control Pin → Arduino Digital Pin 10 (RX)
• Camera GND Pin → Arduino GND
• Camera VCC Pin → Arduino 5V (or external power supply)

#include <SoftwareSerial.h>

// Define RX and TX pins for SoftwareSerial
SoftwareSerial cameraOSD(10, 11); // RX = Pin 10, TX = Pin 11

void setup() {
  // Initialize serial communication with the camera
  cameraOSD.begin(9600); // Baud rate for OSD communication
  Serial.begin(9600);    // Serial monitor for debugging

  Serial.println("Camera OSD Configuration Started");
}

void loop() {
  // Example: Send a command to the camera (replace with actual commands)
  cameraOSD.println("SET_OSD:ON"); // Turn on OSD (example command)
  
  // Check for responses from the camera
  if (cameraOSD.available()) {
    String response = cameraOSD.readString();
    Serial.println("Camera Response: " + response);
  }

  delay(1000); // Wait 1 second before sending the next command
}

• Replace "SET_OSD:ON" with actual OSD configuration commands as per the camera's protocol.
• Ensure the baud rate matches the camera's UART communication settings.

1. No Video Output

   • Cause: Incorrect wiring or power supply issues.
   • Solution: Verify the connections to the VIDEO, VCC, and GND pins. Ensure the power supply is within the specified range.

2. OSD Not Displaying

   • Cause: OSD is disabled or improperly configured.
   • Solution: Use the UART interface to enable and configure the OSD. Check the camera's OSD settings.

3. Poor Video Quality

   • Cause: Dirty lens or interference in the video signal.
   • Solution: Clean the lens with a microfiber cloth. Check for loose connections or sources of interference.

4. Camera Overheating

   • Cause: Prolonged use in high-temperature environments.
   • Solution: Ensure proper ventilation and avoid operating the camera in temperatures exceeding 60°C.

Q1: Can the camera be powered directly from a 4S LiPo battery?
A1: Yes, the camera supports an input voltage range of 5V to 40V, making it compatible with 4S LiPo batteries (14.8V nominal).

Q2: How do I switch between PAL and NTSC modes?
A2: The camera has a built-in switch or menu option to toggle between PAL and NTSC. Refer to the user manual for detailed instructions.

Q3: Is the camera waterproof?
A3: No, the camera is not waterproof. Avoid exposing it to water or moisture.

Q4: Can I use this camera with a DVR for recording?
A4: Yes, the camera's analog video output can be connected to a DVR for recording purposes.

By following this documentation, users can effectively integrate and operate the Caddx Ratel 2 1200TVL camera in their projects.