DFRobot - Ultra-Compact ToF Laser Ranging Sensor (7.8m, 1 gram)

The ToF Laser Ranging Sensor leverages dToF (Direct Time of Flight) technology with 940nm laser pulses to deliver precise distance measurements up to 7.8 meters (±4cm accuracy), even in high-interference environments (ambient light resistance: 100,000 lux). Compatible with Raspberry Pi, Arduino, and ESP32 via UART/I2C interfaces, its ultra-compact design (19×12×10.3mm, 1 gram) and multi-protocol support make it ideal for robot and drone obstacle avoidance and navigation, robotics, IoT, and industrial automation.

Ultra-Lightweight & Miniaturized Design

Weighing 1g with dimensions of 19×12×10.3mm, the sensor is one of the smallest and lightest dToF solutions on the market. Its 19mm³ footprint allows direct integration into micro-drones, wearable devices, or robotic joints without compromising payload capacity or mobility. The design eliminates traditional bulky optics, enabling deployment in space-critical applications like micro-drone obstacle avoidance or smartwatch gesture control.

Figure: Lightweight and Coin-Sized ToF Laser Ranging Sensor

High-Speed Dynamic Ranging

With a 50Hz refresh rate, the sensor delivers real-time distance updates, critical for applications requiring rapid response, such as drone obstacle avoidance or industrial conveyor belt monitoring. The narrow 2-3° field of view minimizes interference from ambient light and background noise, ensuring stable performance in both indoor and outdoor settings.

Robust Anti-Interference Capability

The sensor operates reliably under 100,000 lux ambient light (equivalent to direct sunlight), making it suitable for outdoor traffic monitoring or construction sites. Advanced algorithms filter out environmental noise, enabling consistent accuracy in dynamic scenarios like vehicle speed detection or material level measurement.

Note: The cable colors included with this product correspond to the power supply as follows: RED->GND, Black->VCC. Please carefully check the power connections before proceeding.

• Drone Navigation: Real-time altitude hold and obstacle avoidance in confined indoor spaces.
• Robotics: Dynamic path planning for AGVs (Automated Guided Vehicles) or service robots.
• Smart Traffic Systems: Vehicle flow monitoring and parking status detection.
• Industrial Automation: Material level detection and production line object counting.

Figure: Applications of the ToF Laser Ranging Sensor

• Ranging Range: 0.02–7.8m
• Accuracy: ±4cm (typical)
• Refresh Rate: 50Hz
• Ambient Light Resistance: 100,000 lux
• Field of View: 2–3°
• Power Supply: 4.3–5.2V DC
• Communication Interfaces: UART/I2C/IO
• Dimensions: 19.0×12.0×10.3mm
• Sensor Weight: 1g

• ToF laser ranging sensor-7.8m x1
• Wiring x2