The SparkFun MPU-9250 IMU Breakout contains the latest 9-axis MEMS sensor from InvenSense. Each of the 9DoF breakouts contains an MPU-9250 with a System in Package (SiP) that combines two chips: the MPU-6500, which features 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 with smaller projects in mind, hence the reduced size, helping you install it in previously impossible areas. , if If you want to use a breadboard, or secure the IMU board to a project using something like epoxy, it is possible to easily remove the mounting holes.
In order to obtain its smaller size, the MPU-0250 breakout has been outfitted with PTH pins which have been placed around the permiter of the PCB in three rows of three or four. The top row (J1) is all you need to get the most functionality out of the IMU. Including the I2C and power interface. Along the bottom are the second most likely to be used PTH pins (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.
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