SmartMotion® MEMS Motion Sensors

Hello!

I have read the documentation of the ICM-20948 IMU and done some tests, but I would like to confirm the following two points:

- The accelerometer in the ICM-20948 IMU returns values in units of g, but are these units of g-force or is it the g of free-fall acceleration? My tests and reading articles in the internet indicate it is g-force, but I wanted to confirm.

- The reference frame of the accelerometer is the same as the orientation coordinate system? That is, Y is forward, Z is up, and X is to the right for acceleration (i.e., linear translation)?

I recently purchased an EV_ICM-42688-P board from Mouser but it arrived without any technical documentation.
Please provide a link to an accurate and readable PDF schematic. Also any applicable Appnote if available.

I'm having trouble getting freefall detection to work on an ICM-42670-P, so I have several questions --- mostly related to the information in AN-000271 https://invensense.tdk.com/wp-content/uploads/2023/05/an-000271-icm-42607x-icm-42670x-apex-motion-functions-description-and-usage.pdf

We are using DK-40609-D SmartMotion eMD version 2.0.0 dated 2023-05-11. We see compilation error and prebuilt binaries are not working. Looking forward to support to make sure the eMD package is compiled in Atmel Studio and Algo visualiser works fine.

We also see the PCB is different from User Guide of DK-40609-D. We dont see ICM-40609-D in the User Guide list of supported device. Kindly clarify if this device is supported by the SmartMotion eMD package?

Hello, I am now working on an embeded device that uses icm42866 as imu. How ever, as i use it as the way of mpu6050(changed the reg address already), it didn't send the right data, as it's showed -2^15 or 0.So where can i get an example to initialize the icm42866 on stm32? At least i want you to show me the procedure for the init and communication with I2C

Hello! I would like to ask what is the difference between ICM-42670-P and ICM-42670-S?

The equipment is used in ships. There is a motor at the bottom of the equipment to drive the propeller to work, so it has a certain vibration. The number of equipment trial runs is about 500. After the equipment has been running for a period of time, two abnormalities occur. 1. About 10 devices are abnormal. The inspection found that the ICM-42688 communication is normal, the acceleration value is normal, and the data of some gyro axes are abnormal. Some are X-axis, some are Y-axis and Z-axis. The data are all the original register values ​​of the sensor read in a static state.

Hi TDK Team,

I am currently using the ICM-42688-P in our IoT devices and am considering switching to the following parts. Will these work without any code modifications? If changes are necessary, please advise on what they would be.

ICM-42670-P
ICM-42605

Thanks in advance.

We are using the MPU6050 chips on our custom PCBs.
We are facing some issues while testing MPU6050 chip and wanted too reach out to see if there were any known solutions/directions. 30% of the PCB's are showing 0(zero) values upon initialization, and we know initilaization is not an issue because other pcbs are working as expected. 30% of other pcbs are showing major offsets. Is there any way to calibrate 6050 chips on our pcbs? Please see attached images for reference.

Is there anyone who have reported the same issue.

The datasheet doesn't include the register map, so how can I figure out how to use it?
Also, are there any libraries available for Arduino or other MCU?