STMicroelectronics X-NUCLEO-6180A1

Overview

X-NUCLEO-6180A1 from STMicroelectronics is an STM32 Nucleo-compatible expansion board featuring the VL6180 Time-of-Flight proximity sensor, enabling absolute distance measurement up to 62 cm with reflectance-independent accuracy, integrated 4-digit LED display, and Arduino UNO R3 pinout for rapid prototyping in industrial sensing and human-machine interface applications.

For engineers reviewing the X-NUCLEO-6180A1 datasheet, X-NUCLEO-6180A1 pinout, X-NUCLEO-6180A1 application, or X-NUCLEO-6180A1 equivalent, this board supports multi-sensor stacking via Arduino connectors, includes level-shifted I²C (SCL/SDA at 2.8 V), GPIO interrupt routing, and laser-compliant FlightSense technology for Class 1 safety-critical proximity evaluation.

Technical Context

The board implements ST's FlightSense ToF architecture, measuring round-trip time of 940 nm VCSEL pulses to compute absolute distance without calibration against target albedo. It integrates a 3.3 V regulator, bidirectional logic-level shifter for 2.8 V I²C signaling, and GPIO expander to route VL6180 interrupts (GPIO0_B/L/R, GPIO1_B/L/R) to Nucleo headers.

It supports daisy-chaining up to three external VL6180-SATEL satellite boards via dedicated connectors, enabling multi-zone ranging. The on-board 4-digit display drives numeric distance output directly from VL6180 register reads, eliminating host MCU display processing overhead.

Key Specifications

Availability

X-NUCLEO-6180A1 is available at Aetrix Electronics and suitable for industrial HMI development, embedded proximity sensing validation, and STM32-based IoT node prototyping requiring stable component supply and rapid evaluation capability.

Supply support for X-NUCLEO-6180A1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, sensors, power ICs, and development tools for industrial, automotive, and consumer applications.

This board belongs to ST's X-NUCLEO ecosystem - a family of Arduino-form-factor expansion boards engineered to accelerate STM32 Nucleo-based prototyping with plug-and-play sensor, connectivity, and actuator functionality.

FAQ

Does X-NUCLEO-6180A1 require external firmware to operate?

No. The board ships with fully functional firmware preloaded on its onboard microcontroller. Users can immediately read distance data via the 4-digit display or access raw sensor registers over I²C using ST's provided STM32Cube expansion package and X-CUBE-TOF1 middleware, available free from st.com.

Can multiple X-NUCLEO-6180A1 boards be stacked on one Nucleo board?

No - only one X-NUCLEO-6180A1 may be directly mounted on a Nucleo board due to I²C address conflict and physical header overlap. However, up to three VL6180-SATEL satellite breakout boards can be connected to its dedicated satellite headers while sharing the same I²C bus via configurable slave addresses.

What is the purpose of the 2.8 V level shifter on this board?

The VL6180 sensor operates its I²C interface at 2.8 V, while most STM32 Nucleo boards provide 3.3 V I/O. The onboard level shifter ensures reliable bidirectional communication between the 3.3 V Nucleo MCU and the 2.8 V VL6180, preventing signal integrity issues and device stress during read/write cycles.

Is the laser emitter user-configurable or adjustable?

No. The 940 nm VCSEL laser driver is factory-calibrated and locked to maintain Class 1 compliance. ST explicitly prohibits modification of laser drive current, pulse duration, or optical path - doing so voids safety certification and risks regulatory noncompliance per IEC 60825-1 and 21 CFR 1040.10/1040.11.