SparkFun MPU-9250 IMU Breakout 9軸感測模組 陀螺儀 / 加速度計 / 磁力計

描述

SparkFun MPU-9250 IMU Breakout 9軸感測模組 陀螺儀 / 加速度計 / 磁力計

SparkFun MPU-9250 IMU Breakout 採用InvenSense最新的9軸 MEMS 感測器模組。這些 9DoF 突破中的每一個都具有帶有系統級封裝（SiP）的MPU-9250，該系統包含兩個晶片：包含3軸陀螺儀和3軸加速度計的MPU-6500以及AK8963，一個3軸磁力計。這次突破的設計比我們其他一些產品更小，以適應較小的項目。但是，如果您打算使用麵包板，或者將IMU板固定到類似環氧樹脂的項目上，則安裝孔可以很容易地折斷。

為了實現其更小的尺寸，MPU-9250 Breakout 的特點是PTH引腳已經繞在PCB的邊界上，排成三排或四排。頂行（J1）是需要從IMU獲得最多功能的全部產品。這些包括I ² C和電源接口。第二種最有可能被使用的PTH集合在底部（J3）。這包括地址引腳，中斷引腳和IO電壓電源，以便於與更現代的1.8V處理器進行接口連接。第三種是非麵包板兼容行（J2），用於將其他I ² C設備作為從屬設備運行至此設備。對於使用這些連接進行原型設計，可以像使用Arduino Pro Mini 或類似產品一樣將連接置於頂部。

MPU-9250取代了流行的EOL MPU-9150，功耗降低了44％。根據 InvenSense 的說法，“陀螺儀的噪聲性能提高了3倍，羅盤的滿量程範圍比同類產品的性能提高了4倍以上。”MPU-9250使用16位模數轉換器（ADC）對9個軸進行數字化處理，使它成為一個非常穩定的9軸自由度感測模組。

特色:

• 具有±250，±500，±1,000和±2,000°/秒的用戶可編程滿量程範圍和集成式16位ADC的數字輸出X，Y和Z軸角速度傳感器（陀螺儀）
• 具有±2g，±4g，±8g和±16g的可編程滿量程範圍的數字輸出三軸加速計以及集成的16位ADC
• 帶集磁器的3軸矽單片霍爾效應磁性傳感器
• 數字可編程低通陀螺儀濾波器
• 陀螺儀工作電流：3.2mA
• 加速度計正常工作電流：450μA
• 磁力計正常工作電流：重複頻率8Hz時為280μA
• VDD電源電壓範圍為2.4 – 3.6V
• 小板設計
• 可拆卸的安裝孔

技術支援與文件

• 硬體概要
• Eagle 文件
• 連接指南
• DataSheet 數據表（MPU-9250）
• 註冊地圖（MPU-9250）
• Arduino 函數庫
• GitHub

SparkFun IMU Breakout – MPU-9250

The SparkFun MPU-9250 IMU Breakout features the latest 9-axis MEMS sensor from InvenSense. Each of these 9DoF breakouts feature an MPU-9250 with a System in Package (SiP) that combines two chips: the MPU-6500, which contains a 3-axis gyroscope as well as a 3-axis accelerometer, and the AK8963, which features a 3-axis magnetometer. This breakout has been designed to be smaller than some of our other offerings to fit in smaller projects. However, if you plan to use a breadboard, or secure the IMU board to a project with something like epoxy, the mounting holes can be easily snapped off.

IMU Breakout – MPU-9250

To achieve its smaller size, the MPU-9250 Breakout features PTH pins that have been wrapped around the border of the PCB in three rows of three or four. The top row (J1) is all one needs to get the most functionality out of the IMU. These include the I²C and power interface. The second most likely to be used set of PTHs are found along the bottom (J3). This includes the address pin, the interrupt pin, and the IO voltage supply for easy interface with a more modern 1.8V processor. The third, a non-breadboard-compatible row (J2), is used for features like running other I²C devices as slaves to this one. For prototyping with these connections, throw your connections on top as you would with an Arduino Pro Mini or similar product.

SparkFun MPU-9250

The MPU-9250 replaces the popular EOL MPU-9150 and decreases power consumption by 44 percent. According to InvenSense, “Gyro noise performance is 3x better, and compass full-scale range is over 4x better than competitive offerings.” The MPU-9250 uses 16-bit Analog-to-Digital Converters (ADCs) for digitizing all nine axes, making it a very stable 9 Degrees of Freedom board.

• Digital-output X-, Y-, and Z-axis angular rate sensors (gyroscopes) with a user-programmable full-scale range of ±250, ±500, ±1,000 and ±2,000°/sec and integrated 16-bit ADCs
• Digital-output triple-axis accelerometer with a programmable full-scale range of ±2g, ±4g, ±8g and ±16g and integrated 16-bit ADCs
• 3-axis silicon monolithic Hall-effect magnetic sensor with magnetic concentrator
• Digitally programmable low-pass Gyroscope filter
• Gyroscope operating current: 3.2mA
• Accelerometer normal operating current: 450µA
• Magnetometer normal operating current: 280µA at 8Hz repetition rate
• VDD supply voltage range of 2.4 – 3.6V
• Small board design
• Detachable mounting holes