Ai-Thinker BU03 UWB Technology Indoor Positioning Module The Ai-Thinker BU03 is an advanced Ultra-Wideband (UWB) module 🚀 developed by Ai-Thinker Co., Ltd. and based on the Decawave DW3000 series chip. The BU03 integrates an onboard ceramic antenna, RF circuit, and power management. It supports bidirectional ranging, TDOA, and PDOA positioning systems, achieving 10 cm accuracy 📏 and data rates up to 6.8 Mbps. It is widely applicable in precision positioning, coal mine positioning, hospital personnel tracking, storage positioning, and various indoor positioning scenarios. ✨ Technical Advantages 10 cm High Accuracy: Achieves industry-leading precision, ideal for robotics control, inventory verification, and critical personnel tracking. Support for TDOA/PDOA: Beyond traditional Two-Way Ranging (TWR), the BU03 supports Time Difference of Arrival (TDOA) and Phase Difference of Arrival (PDOA), enabling scalable and secure RTLS. FiRa™ Compliance: Adheres to FiRa™ Consortium specifications, ensuring interoperability with modern UWB devices including consumer electronics. Dual-Channel Support: Operates on CH5 (6.4895 GHz) and CH9 (7.9872 GHz), maximizing performance and improving interference immunity. High Data Rate: Supports speeds up to 6.8 Mbps, enabling precise location updates and secure data transfer simultaneously. Power Efficiency: Optimized for ultra-low-power operation, ideal for battery-powered tags and smart wearables (sleep current < 1 µA). 📊 Main Parameters Model BU03 Package SMD-24 Size 23.0 × 13.0 × 2.5 (±0.2) mm Antenna Onboard ceramic antenna Center Frequency CH5 (6489.5 MHz), CH9 (7987.2 MHz) Operating Temperature -40℃ ~ 85℃ Storage Temperature -40℃ ~ 125℃, < 90% RH Power Supply 2.5V ~ 3.6V (typical 3.3V), current ≥200mA Interface SPI I/O 9 📌 Additional Information The BU03 module has a total of 24 pins, including pin schematic and functions. Products sealed in moisture-proof bags should be stored in a non-condensing atmosphere of
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