Description Mini ToF Unit is an ultra-compact Time of Flight ranging module based on the VL53L0X laser ranging sensor. Its laser emission module is rotated by 90 degrees, enabling horizontal forward detection with a 25 degree field of view in a small 24.0 x 24.0 x 8.0mm unit. The Mini ToF Unit measures targets from 3 to 200cm with plus/minus 3% typical accuracy, 1mm resolution, a 940nm Class 1 VCSEL laser source, and fast response through I2C communication at address 0x29. The standard HY2.0-4P Grove connector makes it easy to integrate with M5Stack controllers and sensor projects. With Arduino, UiFlow1, and UiFlow2 support, this Mini ToF Unit is suitable for robot obstacle detection, smart home sensing, short-range presence detection, security monitoring, and intelligent transportation experiments that require compact forward distance sensing. Note: Under normal conditions, the maximum measurable distance is 120cm. To reach the maximum 200cm range, enable Long Range Mode and use the sensor in a dark environment with minimal infrared interference. Features Mini ToF Unit sensing: VL53L0X Time of Flight laser ranging in an ultra-compact M5Stack Unit form factor. 90 degree detection: rotated laser emission module supports horizontal forward measurement. Distance range: 3-200cm measurement range with 1mm resolution and plus/minus 3% typical accuracy. Optical field: 25 degree field of view with 940nm Class 1 VCSEL laser source. Fast response: 23ms measurement speed, with a minimum speed of 8ms. Simple interface: HY2.0-4P Grove connector using I2C communication at 0x29. Programming support: Arduino, UiFlow1, and UiFlow2 workflows are provided in the documentation. Specifications Sensor VL53L0X Measurement range 3-200cm Resolution 1mm Measurement speed 23ms, minimum 8ms Field of view 25 degree Light source type Laser Time of Flight Laser wavelength 940nm VCSEL, Class 1 safety level Communication interface I2C at 0x29 Operating temperature 0 to 40 C Power consumption Standby without LED: DC 5.03V at 15.01uA; standby with LED: DC 5.02V at 1.92mA; working mode: DC 5.02V at 10.99mA Unit size 24.0 x 24.0 x 8.0mm Unit weight 1.7g Package size 138.0 x 93.0 x 9.0mm Gross weight 3.5g Applications Mini ToF Unit forward distance sensing for mobile robots and obstacle detection. Short-range object detection for smart home devices and compact automation projects. Security monitoring and presence detection where fast, small-format ToF ranging is useful. Intelligent transportation experiments and classroom projects using I2C distance data. Product List 1 x Unit Mini ToF-90 1 x HY2.0-4P Grove connection cable, 5cm Other Content The module is built for forward-facing distance measurement. Compared with a standard straight-facing ToF module, the 90 degree optical arrangement lets the Mini ToF Unit detect objects in front of a mounted device while keeping the unit body flat against the project surface. The documentation provides a schematic PDF, VL53L0X datasheet, Arduino driver library, Arduino test program, and UiFlow1 and UiFlow2 references for integrating the sensor into M5Stack projects. For stable measurements near the upper end of the range, keep strong infrared interference away from the sensor and use Long Range Mode when the project needs to approach 200cm detection. Resources Unit Mini ToF-90 product document Unit Mini ToF-90 schematic PDF VL53L0X laser ranging sensor datasheet Unit Mini ToF-90 Arduino driver library Unit Mini ToF-90 Arduino test program Unit Mini ToF-90 UiFlow1 documentation Unit Mini ToF-90 UiFlow2 documentation FAQ What is included in the package? The Mini ToF Unit package includes one Unit Mini ToF-90 and one 5cm HY2.0-4P Grove connection cable. What distance can the sensor measure? It supports a 3-200cm measurement range. Under normal conditions, the maximum measurable distance is 120cm; Long Range Mode and a darker environment help reach 200cm. What interface does it use? The unit uses I2C communication at address 0x29 through the HY2.0-4P Grove interface. Which platforms are supported? The documentation provides Arduino, UiFlow1, and UiFlow2 resources for the Mini ToF Unit.
