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SparkFun 原廠 VR IMU Breakout - BNO086 (Qwiic) (SEN-22857)

DESCRIPTION

　　Virtual reality is in, but you shouldn't have to drop hundreds of dollars to gain access to the technology behind it. Luckily, that's where the SparkFun VR IMU Breakout comes in. At its heart is CEVA’s BNO086, a combination triple-axis accelerometer/gyro/magnetometer System in Package (SiP) with a 32-bit ARM© Cortex™ M0+. The BNO086 Inertial Measurement Unit (IMU) produces accurate rotation vector headings, excellently suited for VR and other heading applications, with a two-degree or less static rotation error. The VR IMU is exactly what we’ve been waiting for; all the sensor data is combined and drift-corrected into meaningful, accurate IMU information. It’s perfect for any project that needs to sense orientation or motion.

　　This IMU breakout board has also been equipped with two I2C Qwiic connectors to make interfacing with the tiny QFN package a bit easier. It’s part of SparkFun’s Qwiic connect system, so you won’t have to do any soldering to figure out how things are oriented. However, we still have broken out 0.1"-spaced pins if you prefer to use a breadboard.

　　The BNO080 was designed to be implemented in Android-based cellular phones to handle all the computations necessary for virtual reality goggles using only your phone. With the BNO080 EOL, CEVA offers the drop-in replacement BNO086 with enhanced features (14-bit accelerometer fusion, reduced idle state power, and Interactive Calibration). The sensor is quite powerful, and with power comes a complex interface. Thanks to the solder jumpers on the board, you can select between two different I2C addresses. Still, if I2C is not your first communication choice, the sensor can communicate over SPI and UART! We’ve also written an I2C-based library that provides the rotation vector (the reading most folks want from an IMU), acceleration, gyro and magnetometer readings, step counting, and activity classifier (such as riding a bike).

　　The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.／是一個由 I 2 C 傳感器、執行器、屏蔽層和電纜組成的生態系統，可加快原型設計速度並不易出錯。所有支持 Qwiic 的板均使用常見的 1 毫米間距、4 針 JST 連接器。這減少了所需的 PCB 空間，並且極化連接意味著您不會錯誤地連接它。

FEATURES

• Operating Voltage　工作電壓
  
  1. 2.4V - 3.6V
     
  2. Typically 3.3V via Qwiic cable
     
• I2C (Default): Up to 400kHz
  
• SPI: Up to 3MHz
  
• UART: 3Mbps
  
• Rotation Vector
  
  1. Dynamic Error: 3.5°
     
  2. Static Error: 2.0°
     
• Gaming Rotation Vector
  
  1. Dynamic Error: 2.5°
     
  2. Static Error: 1.5°
     
  3. Dynamic Heading Drift: 0.5° / min
     
• Geomagnetic Rotation Vector
  
  1. Dynamic Rotation Error: 4.5°
     
  2. Static Rotation Error: 3.0°
     
• Gravity Angle Error: 1.5°　重力
  
• Linear Acceleration Accuracy: 0.35m/s2　線加速度
  
• Accelerometer Accuracy: 0.3m/s2　　　　加速度
  
• Gyroscope Accuracy: 3.1° / sec　　　陀螺儀
  
• Magnetometer Accuracy: 1.4µT　　　磁力
  
• 2x Qwiic Connection Ports　　接口
  
• I2C Address: 0x4B (default), 0x4A
  
• I2C Pull-Up Resistors (2.2kΩ)　電阻
  
• Power LED　指示燈
  
• Jumpers
  
  1. Power LED
     
  2. I2C Pull-up Resistors
     
  3. Address Select
     
  4. Protocol Selection 0
     
  5. Protocol Selection 1
     
• Board Dimensions: 1.0in. x 1.2in. (25.4mm x 30.48mm)
  
• Weight: 3g

【示意圖】：

 

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