OV767X support with Arduino Nano

mjrovai · August 4, 2021, 2:04pm

I just tried the new example “nano_ble_sense_camera” that was generated using TL (MobileNetV1 0.2 (final layer: 16 neurons, 0.1 dropout). Doing the inference, the photo is captured only once and the code is frozen on Arduino.

Sometimes, after reset, an error occurred, regarding TFLite arena allocation

I run the same model on a modified static_buffer example code and it worked well.

Here is possible to see one of the images:

The code that I used was developed based on Jeremi Ellis (@rocksetta) example).
Here is the code:

jenny · August 4, 2021, 4:07pm

Hi @mjrovai

Thank you for the bug report! Our tech team is currently working through the bug associated with the memory alloc/dealloc, I will post when we push the fix.

Thank you!

Arjan · August 13, 2021, 1:48pm

Hi @mjrovai,

We’ve fixed the memory bug for the Arduino camera. This will go into production right after the weekend.

Regards,
Arjan

mjrovai · August 24, 2021, 1:53pm

Thanks a lot.
I tried for the first time, collect image data with TinyML kit (Nano33 + OV7675). I used the latest Arduino CLI (for Mac) but the Camera did not appear as one of the sensors. I tried the connection using both, the WebUSB and EI CLI.

janjongboom · August 24, 2021, 2:13pm

So @Arjan is only holiday and I don’t have an OV7675 laying around, but did you load the latest firmware listed in https://docs.edgeimpulse.com/docs/arduino-nano-33-ble-sense ?

mjrovai · August 24, 2021, 2:29pm

Hi @janjongboom, Yes I downloaded the version available yesterday:

janjongboom · August 24, 2021, 6:01pm

Let me check w/ the firmware team that CDN has the latest firmware!

janjongboom · August 24, 2021, 8:32pm

Hi @mjrovai pushed the latest to CDN now, you can download the new version from https://docs.edgeimpulse.com/docs/arduino-nano-33-ble-sense and it should have the camera present!

mjrovai · August 24, 2021, 9:01pm

Great @janjongboom. It is working using edge-impulse-daemon. Only as a comment, WebUSB still does not recognize the camera. Thanks a lot!
Marcelo
(I rest my case

janjongboom · August 24, 2021, 9:18pm

Love it! Will check with the team on the WebUSB support (it’s a shared codebase with the daemon, so interesting!).