Gravity: 8x8 Matrix ToF 3D Distance Sensor (I2C&UART, 3.5m Range, 60° FOV)
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Description
The Gravity 8x8 Matrix ToF 3D Distance Sensor is a 64-pixel depth-sensing module powered by an onboard RP2040 microcontroller and the VL53L7CX sensor. Delivering real-time continuous distance mapping up to 3.5 metres across a 60-degree field of view, it bridges the gap between single-point rangefinders and high-power depth cameras. It is ideal for makers, students, and developers building autonomous robotics, contactless gesture interfaces, and interactive installations.
Spatial awareness across 64 pixels
Rather than measuring a single point, the sensor generates an 8x8 multi-zone depth map at 15Hz to 60Hz across a 60-degree field of view. This enables mobile robots to identify floor edges, obstacles, and clear paths up to 3.5 metres away without heavy computational overhead.
Broad platform and software integration
The module connects via standard Gravity I2C, UART, or USB-C interfaces and operates from 3.3V to 5V. It offers native compatibility with Arduino, micro:bit, ESP32, Raspberry Pi, and LattePanda, supported by graphical blocks in Mind+ and MakeCode as well as standard C++ libraries.
Programmable RP2040 edge computing
An onboard Raspberry Pi RP2040 microcontroller processes sensor algorithms and supports custom firmware or TinyML models directly on the board. Developers can update code via USB-C flash drive mode to perform on-device gesture recognition and motion analysis.
Multi-sensor cascading over I2C
With four selectable I2C addresses from 0x30 to 0x33, up to four matrix sensors can be daisy-chained on a single bus. This allows projects to combine multiple units to expand total spatial coverage and multi-directional sensing.
Eco-friendly hardware and updated firmware
The module includes lead-reduced black aluminium standoffs and thumb screws compliant with EN71 safety standards. It also features updated V1.3 firmware to maintain responsive readings when targets exceed the maximum 3.5-metre range.
Downloads & documentation
Specifications
| Sensor Model | VL53L7CX |
| Algorithm Processing MCU | RP2040 |
| Number of Matrices | 8×8, totaling 64 ranging points |
| Ranging Mode | Continuous Ranging |
| Ranging Speed | 15Hz - 60Hz |
| Ranging Range | 20mm - 3500mm |
| Within the range of 20 - 200mm | ±11mm for white targets, ±12mm for light gray targets, and ±12mm for gray targets; |
| Within the range of 200 - 3500mm | ±5% for white targets, ±6% for light gray targets, and ±6% for gray targets. |
| Ranging Angle | 60° horizontal, 60° vertical, 90° diagonal |
| Laser Safety Class | Compliant with Class 1 laser safety standards |
| Operating Voltage | 3.3V - 5V |
| Operating Current | Less than 80mA |
| Data Interface | I2C/UART/USB |
| Interface Type | PH2.0-4P (Gravity Pinout) |
| I2C Address | 4 adjustable options: 0x30/0x31/0x32/0x33 |
| UART Baud Rate | 115200bps (fixed value, non-modifiable) |
| Firmware Update | TYPE-C, USB flash drive mode |
In the box
| Gravity: Matrix Laser Ranging Sensor ×1 | 1 |
| PH2.0-4P Connection Cable ×1 | 1 |
| Aluminum Alloy Mounting Bracket ×1 | 1 |
| Aluminum Alloy Support Bracket ×1 | 1 |
| M3 Thumb Screw ×4 | 1 |
| M3 Sensor Fixing Screw ×2 | 1 |
| M3×35 Mounting Copper Spacer ×2 | 1 |
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