Summary of BU03 and BU04

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II. UWB Introduction

UWB stands for Ultra Wideband, which is a wireless communication technology. It uses nanosecond to microsecond non-sinusoidal narrow pulses to transmit data, hence occupying a very wide spectrum.

UWB does not use a carrier wave but instead employs a series of short energy pulses. These pulses are transmitted over a certain spectrum using orthogonal or direct-sequence methods. The pulses can be generated and modulated in various ways and can carry information through different pulse methods.

III. Purchase Links

BU03 Module: Click to Purchase

BU03-Kit Development Board: Click to Purchase

BU04 Module: Click to Purchase

BU04-Kit Development Board: Click to Purchase

IV. Module Introduction

(1) BU03

The BU03 is a UWB module designed by Ai-Thinker, based on the DW3000 series chip from Decawave. The BU03 integrates an onboard ceramic antenna, RF circuitry, and power management.

It can be used in two-way ranging, TDOA, or PDOA positioning systems, achieving a positioning accuracy of up to 10 cm and supporting a data rate as high as 6.8 Mbps.

Specifications

• Communication Interface: SPI

• Power Supply: 2.5V~3.6V

• Positioning Accuracy: 10 cm

• Dimensions: 23.0 x 13.0 x 2.5 mm (±0.2 mm)

• Minimum Transmit Power Consumption: 18.77 mA

• Supports Two-Way Ranging

• Supports TWR or PDOA Positioning Systems

• Can be Used as a UWB Base Station or UWB Tag

• Antenna Type: Onboard Ceramic Antenna

• Provides STM32 SDK Development Package

Know more: https://www.youtube.com/watch?v=g7bNjMSLttw

(2) BU03-Kit

Interface Description

1. POWER: Power indicator light, red when powered on.

2. RUN: Running indicator light, stays on when running successfully.

3. UWBTX: Communication indicator light 1, blinks when data is sent.

4. UWBRX: Communication indicator light 2, blinks when data is received.

5. SFD: LED with undefined function.

6. RXOK: LED with undefined function.

7. Header: STM32 serial port for bootloading.

8. BOOT: Bootloading control button.

9. RESET: Reset button.

10. Positioning and Ranging Data Interface.

11. UART: Supports burning and AT command interaction.

GPIO Schematic

(3) BU04

The BU04 is a dual-antenna UWB module designed by Ai-Thinker, based on the DW3000 series chip from Decawave. The BU04 integrates a DW3000 + STM32F103 MCU and supports dual onboard antennas or dual IPEX connectors for external antennas.

It can be used in two-way ranging, TDOA, or PDOA positioning systems, achieving a positioning accuracy of up to 10 cm and supporting a data rate as high as 6.8 Mbps.

Specifications

• Communication Interface: UART

• Power Supply: 2.5V~3.6V

• Positioning Accuracy: 10 cm

• Integrated STM32F103 MCU

• Dimensions: 35.5 x 33.5 x 3.4 mm (±0.2 mm)

• Minimum Transmit Power Consumption: 43.19 mA

• Supports Two-Way Ranging

• Supports TWR or PDOA Positioning Systems

• Can be Used as a UWB Base Station or UWB Tag

• Antenna Type: Onboard Antenna with External Antenna Support

• Provides STM32 SDK Development Package

(4)BU04-Kit

Interface Description

① External Antenna Connector

② Communication Indicator Light

③ Power Indicator Light

④ Running Indicator Light

⑤ Reset Button

⑥ Bootloading Control Button: Pressing this button pulls the B00T0 pin high, allowing serial port burning.

⑦ USB Communication Interface for Ranging Data Interaction with Host Computer

⑧ AT Command + Program Burning Interface

GPIO Schematic