Product Description:
The BU-03 Ultra-Wide-Band (UWB) Positioning Development Kit from AI Thinker brings professional-grade indoor positioning and distance measurement technology to makers, researchers, and engineers. Utilizing advanced UWB ranging technology, the BU-03 module delivers high-precision distance and position data between nodes — ideal for robotics, IoT localization, and autonomous navigation applications.
With onboard DW3220 UWB transceiver and STM32F103 microcontroller, the BU-03 enables serial AT command-based communication for easy integration with Arduino, STM32, ESP32, or other microcontrollers supporting UART interfaces. It can measure distances up to 25 meters line-of-sight with typical accuracy around 10 cm, offering reliable and real-time spatial positioning even in indoor environments.
By deploying multiple modules, users can build a complete UWB positioning system:
2 modules → Point-to-point distance measurement
3 modules → 2D positioning
4+ modules → 3D positioning and tracking
Originally an industrial-level technology, the BU-03 now makes precise local positioning accessible for makers, education, and R&D projects.
Key Features:
High-precision UWB distance and positioning module
Based on DW3220 Ultra-Wide-Band transceiver + STM32F103 MCU
Positioning accuracy: ±10 cm typical
Operating range: Up to 25 meters (line of sight)
Communication interface: Serial UART (AT command set)
Power supply: 5V DC (peak current 500mA)
Logic level: 3.3V UART
Compact and lightweight, ideal for integration into robots and IoT devices
Supports point-to-point, 2D, and 3D positioning setups
Compatible with Arduino, ESP32, STM32, and other 3.3V logic boards
Expandable system – add more reference nodes for higher accuracy
Easy configuration through simple AT commands
Technical Specifications:
| Parameter | Specification |
|---|
| Model | BU-03 (AI Thinker) |
| Transceiver Chip | DW3220 |
| Microcontroller | STM32F103 |
| Communication Interface | UART (AT Command) |
| Power Supply | 5V DC (500mA peak) |
| Logic Level | 3.3V |
| Operating Range | Up to 25m (line-of-sight) |
| Positioning Accuracy | ±10 cm (typical) |
| Operating Mode | Tag / Anchor / Base station configurable |
| Data Output | Distance / Position via Serial AT commands |
Applications:
Robotics Navigation and Obstacle Avoidance
Indoor Localization and Asset Tracking
Smart Warehouse or Factory Automation
Autonomous Drones and Vehicles
IoT Distance and Position Sensing
Education and Research Projects
Package Includes:
(Note: Positioning requires at least 2 modules; for full 3D positioning, 5 modules are recommended.)
Resources & Documentation:
BU-03 Module Specification PDF
AT Command Set Documentation
Getting Started Guide available online
Why Choose This Module?
The AI Thinker BU-03 UWB Kit combines industrial-level positioning accuracy, open development capability, and maker-friendly serial control, making it the perfect choice for anyone looking to explore precise distance measurement and real-time localization in indoor environments.
Bring spatial intelligence to your projects — achieve centimeter-level positioning accuracy with the BU-03 UWB Development Kit!
