ST INEMO-M1 system on board

[haley0918]

ST just sent me an email regarding this system on board.

INEMO_M1: http://www.st.com/internet/analog/product/253162.jsp
Data brief: http://www.st.com/internet/com/TECHNICA ... 046903.pdf

A 9DOF IMU with a 32bit ARM MCU on board. Though there's no normal I/O pins available. Possible use for advanced IMU in future Multiwii implementation.

[gompf-2]

Hi

Though there's no normal I/O pins available.

?It has all needed for a basic Quad, hardware timers are broken out, ADCs/I2C/USARTs also, check page 3 of DM00046903.pdf.
Looks like the smallest complete flightcontrol if someone brings baseflight to it.

Regards,
gompf

[timecop]

Not much in terms of I/O. You probably *could* carefully repurpose it for DSM2/spektrum sat and 4 motors, but beyond that, you'll want it in some kinda carrier with another processor for more I/O and just send attitude data over say uart or SPI.

Only 4 timer i/o by default, and all might not be usable depending on how its hooked up.

[haley0918]

Have to admit that I had only glance through the data brief and didn't look much in the I/Os.

Yes, it's possible for a basic quad without any extra stuff but I envision to offload filters of the sensors to this board, reducing load on the main controller.

[timecop]

Not too much of a problem, at least with current impl, software is barely using 10% of the cpu

[haley0918]

Not too much of a problem, at least with current impl, software is barely using 10% of the cpu

If you mean on 32bit flight controller, yes.
But what about the current 8bit arduino controllers?

[timecop]

Where's the benefit?

* no hardware 16bit PWM input/output on arduino
* removing I2C sensors and replacing with IMU doesn't solve any problems
* no cost benefit as the NEMO-M1 is not likely going to be cheaper than say arudino due, especially depending on calibration of sensors.