DFRobot
DFRobot Ultra-Compact ToF Laser Ranging Sensor - 7.8m
· MPN: SEN0646
This ultra-compact dToF laser ranging sensor uses 940nm laser pulses to measure distance up to 7.8 metres with typical ±4cm accuracy. It is designed for prec...
This ultra-compact dToF laser ranging sensor uses 940nm laser pulses to measure distance up to 7.8 metres with typical ±4cm accuracy. It is designed for precise, real-time ranging in compact robotics, drone, IoT and automation projects.
The module supports UART, I2C and IO communication, making it suitable for use with Raspberry Pi, Arduino and ESP32 platforms. Its narrow 2–3° field of view and 50Hz refresh rate help provide fast, stable readings for obstacle avoidance, navigation, object counting and level detection.
With dimensions of just 19.0×12.0×10.3mm and a sensor weight of 1g, it can fit into space- and payload-sensitive builds such as micro-drones, wearable devices or robotic joints. The package includes 1× ToF laser ranging sensor-7.8m and 2× wiring leads.
Note: The included cable colours are unusual: RED->GND, Black->VCC. Carefully check the power connections before use.
Features:
- dToF laser ranging: Uses Direct Time of Flight technology with 940nm laser pulses.
- Long-range measurement: Measures up to 7.8 metres.
- High-speed updates: 50Hz refresh rate for real-time distance data.
- Anti-interference performance: Operates under 100,000 lux ambient light.
- Narrow field of view: 2–3° field of view helps reduce background interference.
- Multi-protocol support: Compatible with UART, I2C and IO interfaces.
- Compact and lightweight: 19.0×12.0×10.3mm module with 1g sensor weight.
Specifications:
- 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
Useful applications include drone navigation, robot path planning, smart traffic monitoring, parking status detection, material level detection and production line object counting.
Jargon buster
Plain-language definitions for the technical terms used above.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- lux
- Lux is the standard unit for measuring how much light falls on a surface, similar to how a light meter reports brightness. A sensor that outputs lux gives readings that are easier to compare between rooms, outdoor conditions, and different projects.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
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Sensors & Input
Supplier page — dfrobot.com
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