IMU not working on Oak-D Lite

blank

I'm trying to access the IMU on my Oak-D Lite. According to the hardware documentation, the early Lite cameras didn't come with an IMU, but the newer ones are equipped with an BMI270 sensor. I bought my cameras about half a year ago, so I assume, they are properly equipped …or aren't they? Is there any way to make sure?

When I run the IMU example, I get the following error:

RuntimeError: IMU(0) - IMU invalid settings!: IMU not detected. Your board doesn't have IMU or requires firmware update (Set imu.enableFirmwareUpdate(True) explicitly.). 1, 321

Running the IMU update script, however, yields the following:

(venv_mission) pi@drone-pi:~ $ python update.py

IMU type: NONE, firmware version: 0.0.0, embedded firmware version: 0.0.0

Warning! Flashing IMU firmware can potentially soft brick your device and should be done with caution.

Do not unplug your device while the IMU firmware is flashing.

Type 'y' and press enter to proceed, otherwise exits:

y

IMU FW update status: 0.0%

Firmware update failed!

My camera is connected via a working USB3 cable (one that came with an Oak-D Pro) and works fine otherwise.

Best regards.

jakaskerl

Hi blank
Looks like a hardware issue (eg. missing IMU). Similar post here. Please write to support@luxonis.com for a replacement and link this thread.

Sorry for the inconvenience.

Regards,
Jaka

Ghada

I have the same exact problem, do you have any suggestions on how to do imu synchronization? because I will be adding this camera to my drone which has its own imu so I thought about synchronizing the drone's imu with the camera examples

jakaskerl

Hi Ghada
If you have a way of retrieving the timestamp at which the IMU measurement was taken on the drone, you can compare it to the timestamp at which the OAK frame was taken. This can be done using getTimestampDevice()
(https://docs.luxonis.com/projects/api/en/latest/references/python/#depthai.ImgFrame.getTimestampDevice)
You will need to synchronize the drone's clock to dai.Clock (time since host bootup).

Thanks,
Jaka

blank

A quick update: I followed @jakaskerl 's advice and contacted the support. It seems that batches without IMU are still being sold and that I was lucky enough to get one. This should really be made more clear, as the shop page gives the impression that all Lite cameras have an IMU.

The support offered to exchange my camera for one with IMU and autofocus. However just as @Ghada 's camera, mine will go under a drone, thus autofocus should be avoided. I hope there are any FF cameras with IMU at all. I'll report back if there is any interesting change.

noname333

I have the same issue, Oak-D Lite Fixed Focus and no IMU, just bought this month. Did you ever got a FF with IMU? @blank

erik

@noname333 best to send email to support@luxonis.com and we'll replace your device.

noname333

Customer support was helpful but unfortunately after one week without the product I paid for, the replacement I got was used (had scratches, came without protective plastic) and doesn't seem to have a IMU neither. I will try to return it through the retailer (although because of trusting the manufacturer now I am outside the deadline for a return and it probably won't be possible). Really bad experience, won't buy anything else from Luxonis and cannot recommend.