SmartMotion® MEMS Motion Sensors

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By eben , 3 February 2015

Hello.
Many gyroscope specifications, including noise density for both devices seem identical.
I see that temperature range is extended with the "industrial" MPU-3300. Bias stability is not given for MPU-6500.

Can you please elaborate on the differences between the two devices? My budget allows for the MPU-3300, however currently I'm not seeing major advantages for the much more expensive MPU-3300.

Thank you,
Igor.

By maxchips , 30 January 2015

Hey guys,

It's the first time I'm using this MPU-9150 chip.

I'm using a PIC24 to communicate with it. Right now I can initialize the sensor and get RAW data out of it.

My project requires this sensor to detect motion/no-motion. The PIC chip will do something after certain time of no-motion.

What's the best way achieve this goal?

There is a DMP inside the chip, is the firmware for the DMP customizable for my own purpose, or I have to implement a algorithm inside the PIC firmware to process the raw data?

By tpgillam , 29 January 2015

Figured this might be a good place for this..my apologies if not.

I have a "different use" concept for a simplified fitness tracker that I believe a 6 axis chip could handle.

I'm not an engineer or technically inclined so it's my hope to partner with someone who is to bring this concept to market.

Not looking to re-create the wheel..just want to carve out an aspect of already existing fitness trackers(like the Moov) and alter it slightly so as to be best suited for the intended market.

By nameless911 , 29 January 2015

Hello everybody -

I have problems with initialization of ITG-3200. First init after power up works fine for me. When I then try to re-init the device (same register values), it stops responding to I2C commands. Rebooting the device solves the problem. I this a known issue?

Here are my register values:

By freeagent , 28 January 2015

Hi,

I am porting sensor HAL library(libsensors_iio) to android based platform.
I have got following error during sensor HAL init.

V/Sensors ( 443): Entering function 'int MPLSensor::inv_constructor_init()'
V/Sensors ( 443): Entering function 'int MPLSensor::inv_constructor_default_enable()'
V/Sensors ( 443): HAL:Invensense vector compass cal enabled
E/MPL-storeload( 443): Cannot open file "/data/inv_cal_data.bin" for read
E/MPL-storeload( 443): Could not load cal file - aborting

By bfj , 25 January 2015

Hello all,

My name is Dylan and I am from South Africa. I'm new to the forum and thank you for having me! :)

I am a mechanical engineer and I am busy on a project. My understanding of sensors is rudimentary at best and lets just say that I am venturing down a new garden path. I am using an MPU-6050 in my project that has the on-board DMP and I am interfacing it with an Arduino, or Teensy 3.0 to be more exact. Now I am able to extract raw values from the device, but to me this seems a waste considering the existence of the DMP.