Spike prime IMU power profiles

[techcatgato]

Hey, I've read a bit about the power profiles of the IMU Spike uses, And looking at the pybricks source code, I found in lsm6ds3tr_c_reg.c that it is forced to low power mode. Is this intentional? By forcing it to high power mode It seemed I got it to be more accurate, Should this be possible or a placebo?

[dlech]

I don't think this is intentional. But I'm also not seeing where this is set. The datasheet says that high power mode is enabled by default and to change it, lsm6ds3tr_c_gy_power_mode_set() and lsm6ds3tr_c_xl_power_mode_set() would have to be called, but it doesn't look like that is the case. I didn't look very hard though, so maybe I missed something.

If you want to make a pull request with the change and include some data to back up the claim that is making it more accurate, we will certainly have a look at it.

[techcatgato]

I can't find direct evidence of it being set to low power mode, but I can observe better performance after forcing it to any other mode

[laurensvalk]

Can you describe what you mean with better performance? What did you measure and what has changed?

Here is an example of how you can log data: https://pybricks.com/learn/sensors/measuring-values/