M5Stack Mini ToF Unit in 90 Degree (VL53L0CXV0DH)

M5Stack ToF Sensor with 90-Degree Forward Detection

The M5Stack ToF sensor Mini ToF-90° Unit integrates a VL53L0X time-of-flight ranging module in a compact 24 × 24 × 8mm body. The sensor is installed at a 90° angle, creating horizontal forward detection instead of the straight-ahead orientation used by standard ToF units. This layout is useful when the controller board or enclosure faces upward but distance must be measured toward the front.

The specified measurement range is 3–200cm with typical accuracy of ±3%, a 25° field of view, and a 940nm VCSEL light source at Class 1 laser safety level. Under normal conditions, the practical maximum is typically about 120cm. Reaching 200cm requires Long Range Mode and a dark environment with minimal infrared interference, so range must be validated under actual target reflectivity and ambient light.

I2C Distance Measurement at Address 0x29

The unit communicates through Grove I2C at address 0x29. Measurement speed is specified at 23ms with a minimum of 8ms, and response time is under 30ms. This makes the sensor suitable for obstacle detection, short-range position checks, edge detection, object presence, robot navigation experiments, smart-home mechanisms, and compact security-monitoring prototypes.

Plan Around Field of View and Target Conditions

The 25° field of view means the sensor observes an expanding cone rather than a single point. At longer distances, more of the scene contributes to the measurement. Small objects, dark surfaces, angled targets, strong sunlight, and infrared sources can reduce usable range or stability. Mount the sensor so nearby enclosure walls and mechanical parts stay outside the measurement cone.

Choose the Correct M5Stack ToF Unit

Choose Mini ToF-90° when side-facing or forward horizontal detection is required in a compact assembly. Choose ToF4M for longer range and adjustable FoV. Choose the standard Unit-TOF when a 0° sensor orientation fits the enclosure.

Technical setup details are available in the M5Stack Mini ToF-90° documentation.