Pypilot in OpenPlotter 4 released

[PaddyB]

Is the IMU detected if you press "Refresh" in openplotter-pypilot?

Seems to stay the same >

[seandepagnier]

I am not sure what hardware setup you have, but likely it wont detect the pypilot hat unless there is an i2c eeprom that it can read which is typically only on the pypilot hat's I make.

Otherwise, the detected IMU should (in theory) say something if pypilot itself is getting data from the IMU so not completely sure what is going on there.

[Lazzz]

I'm having trouble with my IMU detection as well!!

When I start up no IMU detected, hit refresh it is sometimes detected.

I have had no luck with any calibration - it's like there is nothing there to calibrate either with IMU only or Autopilot enabled.

When the IMU is detected & I try to calibrate it disappears & won't be detected again until a re-boot.

Pi5 8GB, NVME SSD 512GB, MacArthur hat, OP4, ICM-20948.

[Sully]

I am having the same problem. My IMU is not detected. I thought it was because I didn't solder a few pins properly. Will retry soon.

I'm using this one: https://www.aliexpress.com/item/4000910277147.html

[seandepagnier]

I am having the same problem. My IMU is not detected. I thought it was because I didn't solder a few pins properly. Will retry soon.

I'm using this one: https://www.aliexpress.com/item/4000910277147.html

If you can't see it using "i2c-detect -y 1"  it has nothing to do with pypilot at that stage and is wired wrong or not a good sensor.


I am not sure but guessing you didnt use level translators?  That chip uses 1v8 levels and the pi is 3v3.  For this to work you need mosfets and resistors and without these you might have damaged the part.

[Sully]

I am having the same problem. My IMU is not detected. I thought it was because I didn't solder a few pins properly. Will retry soon.

I'm using this one: https://www.aliexpress.com/item/4000910277147.html

If you can't see it using "i2c-detect -y 1"  it has nothing to do with pypilot at that stage and is wired wrong or not a good sensor.


I am not sure but guessing you didnt use level translators?  That chip uses 1v8 levels and the pi is 3v3.  For this to work you need mosfets and resistors and without these you might have damaged the part.

I definitely didn't use mosfets nor resistors. I'm connecting it directly to the socket of the MacArthur Hat.

Did I burn the IMU? I'm surely learning a lot with these projects haha! 

Anyways I'm going to try to detect it using the method you mentioned.

Edit: didn't work.

[Lazzz]

I definitely didn't use mosfets nor resistors. I'm connecting it directly to the socket of the MacArthur Hat.

Did I burn the IMU? I'm surely learning a lot with these projects haha! 

Anyways I'm going to try to detect it using the method you mentioned.

Edit: didn't work.

I'm in the same boat. I bought the ICM-20948 Sensor Module 9 Axis MEMS Motion Tracking Device Sensor CJMCU-20948 because it was the recommended one and I have it connected to the MacArthur hat via the IMU header.

It is randomly detected but nothing happens when I try to calibrate it & then it has "disappeared" until the next re-boot.

I tried i2c-detect -y 1 but got the following???

   

If this IMU is no good what is the recommendation??

TIA

Pi5 8GB, NVME SSD 512GB, MacArthur hat, OP4

[Opie91]

i2cdetect -y -1 (no dash after i2c)

If not try "sudo apt-get install i2c-tools"

then "i2cdetect -y -1"

[Lazzz]

Thanks Opie,

Still doesn't make much sense to me!!

   

[seandepagnier]

-y 1

not -y -1
not -y -l

also, does the macarthur hat have level translators? If not you will damage that part