DFRobot Fermion TMF8701 Time-of-Flight Distance Ranging Sensor Board

The DFRobot Fermion TMF8701 Distance Ranging Sensor Board is a compact time-of-flight breakout board with a total range of 10 to 600 mm.

The board uses a 940nm VCSEL (Vertical-Cavity Surface-Emitting Laser) to emit light pulses. It calculates the time difference for each reflection to return, providing precise object detection regardless of colour, reflectivity, or surface texture.

Operating Modes

Two distinct operating modes are available. Proximity mode detects objects from 1 to 10 cm, while ranging mode extends sensing between 10 and 60 cm. Measurements are specified within a ±5% tolerance, making the board suitable for applications where precision is critical.

Performance in Challenging Lighting

On-chip sunlight rejection filters minimise background light noise, allowing the sensor to operate reliably in dark environments and in the presence of direct sunlight. Built-in algorithms handle dynamic cover glass calibration and crosstalk compensation, which simplifies integration and supports consistent results.

Key Features

• Accuracy: Measures distance within a ±5% tolerance.
• Dual Operating Modes: Switches between proximity (1 to 10 cm) and ranging (10 to 60 cm) sensing.
• Ambient Light Immunity: Sunlight rejection for stable operation indoors and outdoors.
• Object Agnostic: Single-zone detection works on any colour, reflectivity, or texture.
• Eye Safe: Features a Class 1 eye-safe 940nm VCSEL laser.
• Low Power: Designed for energy-efficient applications.
• Compact Design: Small form factor for space-constrained projects.
• Integrated Intelligence: All necessary algorithms are on-chip, requiring no external optics.

Specifications

• Weight: 7 g
• Total Range: 10 to 600 mm

The DFRobot Fermion TMF8701 Distance Ranging Sensor Board suits projects that need a compact, low-power distance sensing solution with consistent results across varied lighting and surface conditions.