When integrating the TF03 LiDAR into your system, correct wiring is critical. A simple mistake—such as swapping power lines or misconnecting communication pins—can lead to communication failure or even permanent device damage.
This guide walks you through the TF03 connector pinout and best practices to ensure safe and reliable installation.
Connector Specifications
The TF03 utilizes a high-quality 7-pin male connector. The cable consists of six 26 AWG wires. Note that while the connector has 7 slots, only 6 wires are used (Pin 4 is vacant).
Detailed Pin Assignment Table
To avoid errors, always refer to the wire color and its corresponding function before applying power.
| Pin | Signal | Wire Color | Function |
| 1 | VCC | Red | Power Voltage (DC 5V ~ 24V) |
| 2 | RS-485-B / RS-232-RXD / CAN_L | White | Rx / CAN-BUS Low |
| 3 | RS-485-A / RS-232-TXD / CAN_H | Green | Tx / CAN-BUS High |
| 4 | N/A | N/A | None (Vacant) |
| 5 | UART_RXD | Blue | UART Receive |
| 6 | UART_TXD | Brown | UART Transmit |
| 7 | GND | Black | Ground |
Critical Wiring Safeguards
To ensure a successful integration and protect your device, keep the following "Golden Rules" in mind:
- Check the Voltage Range: The TF03 supports a wide voltage range from 5V to 24V DC. Ensure your power source is stable within this range before connecting the Red (VCC) and Black (GND) wires.
- Identify Communication Protocols: The TF03 is versatile, supporting UART, CAN, and RS-485/RS-232.
- If using UART, focus on the Blue (RXD) and Brown (TXD) wires.
- If using CAN-BUS, use the White (Low) and Green (High) wires.
- Warning: Never connect a high-voltage signal to the data pins (Pins 2, 3, 5, 6).
- The "Pin 4" Gap: Be aware that Pin 4 is empty. When looking at the connector, do not mistake the 5th wire for the 4th. Counting from the Red wire (Pin 1) is the safest way to verify positions.
- Secure the Connection: The Molex 1.25mm pitch connector is designed for a snug fit. Ensure it "clicks" into place to avoid intermittent data loss caused by vibrations, especially in UAV or robotics applications.
- If the tail cable is stripped, the stripped area must be sealed with glue to prevent moisture from traveling through the cable’s internal insulation paper into the LiDAR, which could cause damage.
Summary
By following this color-coded wiring scheme, you can ensure your TF03 LiDAR operates at peak performance with reliable data output. Always double-check the GND (Black) and VCC (Red) connections first, as these are the most common points of failure during manual wiring.
Pro-Tip: For industrial or outdoor deployments, ensure that the junction where the wires are soldered or connected to your controller is well-insulated and protected from moisture to maintain the TF03's integrity.
For more information about Benewake LiDAR TF03, see https://benewake.short.gy/tf03-lidar-diy.
