SmartMotion® MEMS Motion Sensors

Hi,

I'm looking for the exact position of the gyro's reference point (for MPU6500 and the likes).
My naive first guess is that it's at the centre (three dimensional) of the chip, but would appreciate official confirmation.

Regards.

Hi everybody,

I am working with ICM-20649, configured in FIFO mode.
From reading the datasheet (v0.2) I understand the device is capable of issuing an interrupt when the FIFO count register is above a watermark threshold level.
I have been unable however to find whether the threshold level is configurable or not, what its value is or the register(s) used to configure it.

Hi
I'm new for MPU9250. I want to use it to do some applications about the attitude angle. I found there are a lot of noise in the gryscrope ouput when the MPU9250 is in stationary, about ±2dps (see attached figure). I have measured the vcc ripple wave amplitude. It is in the range 20mv.
Here are my settings:
PWR_MGMT_1 : 0x03
INT_PIN_CFG: 0x10
INT_ENABLE: 0x00
PWR_MGMT_2: gyroscope & accel
SMPLRT_DIV: 0
Gyroscope Full scale is 2000 dps
Accel Full scale is 8G
DLPFs(41Hz) are enabled for both gyroscope and accel.
SPI interface.

HW: MPU9250 with I2C interface, using IAR EWARM 7.80, using motion driver 6.12 and
unsigned char *mpl_key = (unsigned char*)"eMPL 5.1";

Hello Friends,

I am working on designing a drone . i am using gyroscope present in mpu 6050. i configured gyro with 500dps (register 0x1B is loaded with value 0x08 ) and power management register 0x6B is loaded with 0x00(for bringing gyro to on state).

I measured the values of gyro x, y and z (16bit values) . How can i convert these values into yaw,pitch ,roll angles ??

My gyro values(after subtracting the gyro offset values)

New Gyro Values Xnew=1472 Ynew=-19 Znew=299 values

New Gyro Values Xnew=1466 Ynew=-2 Znew=480 values

Hi,
I am new to SPI programming nad MPU. I am using a ARM controller to interface with MPU6500. Any help to program in spi bus would be helpful.
Thank you
Bharath

hi

we are using mpu9250 and nrf51 to develope a ble device. We need to use 9 axis mode to measure a, g and m. But the current consumption when the chip is in sleep mode is too high. I set MPU_REG_PWR_MGMT_1 to 0x40 and set magnetometer mode to 0 to make the whole chip to sleep. Is this method right?
I get 1.2mA after set the chip to sleep. It's still too high and the specification says it will only be 8µA. Is there any thing I do wrong? Thank you !

We are using the MPU-9250. The Embedded Motion Driver 6.12 describes support for the Cortex-Mx series of processors. We were able to get this up and running on a Cortex-M4 processor. We are migrating to a Cortex-A9 processor now. Is there any support for the MPU-9250 on the Cortex-A9 processors?

Thanks,
Chris

Hi,

I am trying to use the library libmpllib_Keil_M3 on a STM32F103 MCU, unfortunately the MCU is reseting, it seems that this library uses hardware floating point instructions. Can some one confirm this behavior? If not, an example of the library usage will be great.
PS: Is the source for library available for download?

Thank you in advance.

Anyone know how to program the range of the accelerometer on the 30630?