Thingy91: Problem with motion detection using ADXL362

RE: Thingy91: Problem with motion detection using ADXL362

WaStefan — Fri, 16 Apr 2021 07:45:08 GMT

I also have a Thingy91 with v1.4.0.

I was able to achieve the same results as you did. It really seems that a connected USB cable affects the accelerometer data!

When I connect the cable it doesn't work properly as described in the original post. But when I remove the cable it works fine... strange ^^

But thank you for your help and your tip with the USB connection!

RE: Thingy91: Problem with motion detection using ADXL362

JONATHAN LL — Thu, 15 Apr 2021 07:39:10 GMT

Was able to build and successfully flash a Thingy91(v1.4.0) with your code and your code seems to work perfectly fine, when not connected to a USB to see what comes out on the terminal everything seems to work as you described. The device turns green when i move it and once placed regardless of orientation it turns blue within some seconds. If i do have it connected via USB it seems to be a bit finicky and does not seem as reliable, it takes a couple of tries but it turns blue when left alone eventually.

You can check the version of your Thingy91 by looking at the sticker, underneath the PCA number.

Regards,
Jonathan

RE: Thingy91: Problem with motion detection using ADXL362

WaStefan — Wed, 14 Apr 2021 14:52:42 GMT

I use 1.5.

Here are two .hex files, I don't know which one you need, so here you have both ^^

devzone.nordicsemi.com/.../2677.merged.hex

devzone.nordicsemi.com/.../0523.zephyr.hex

RE: Thingy91: Problem with motion detection using ADXL362

JONATHAN LL — Wed, 14 Apr 2021 14:31:50 GMT

Pardon for taking so long to get back,

What NCS version did you use for this project? Hawing some trouble getting it to run properly. Do you have a hex file i could test ?

Regards,
Jonathan

RE: Thingy91: Problem with motion detection using ADXL362

WaStefan — Wed, 07 Apr 2021 12:32:12 GMT

Sure, here you go.

devzone.nordicsemi.com/.../MotionDetection.zip

It is a simple application that sets the LEDs according to the motion state.

- Red: Unknown state (should never happen)
- Green: Moving
- Blue: Still, not moving

RE: Thingy91: Problem with motion detection using ADXL362

JONATHAN LL — Wed, 07 Apr 2021 11:34:30 GMT

Hi,

Could you share your code, I can test it out on a couple of thingy91 to see if the problem persist on different HW versions.

Regards,
Jonathan