Python Example Put Oak-D-Lite into low-power state?

cycob

Is there a Python example script showing how to put the Oak-D-Lite into the low power consumption standby state?

jakaskerl

Hi cycob
There is no low power consumption state. The device has two states, X_link_unbooted - which is when device is plugged in but not running (consuming about a W), and state when device is running (consuming upwards of 5W on oak-d-lite).

Thanks,
Jaka

cycob

Interesting - Here are my results running a console spatial tiny yolo (console output of x,y,z class and fps only)

**Oak-D-Lite POWER CONSUMPTON With Console Only Spatial Tiny Yolo**
(Wali is a set of ROS 2 Humble robot nodes over Ubuntu 22.04 in a Docker container)

- Base Pi5 running Wali 3.3W (Oak-D-Lite unplugged)
- Pi5 running Wali plus Oak-D-Lite first plugged in: 3.85W
- Pi5 running Wali plus console spatial tiny yolo.py 28fps: 7.95W (0.7W for Oak-D-Lite processing)
- Pi5 running Wali after console spatial tiny yolo.py shutdown: 3.98W (0.7W for Oak-D-Lite)

jakaskerl

cycob 7.95W (0.7W for Oak-D-Lite processing)

Typo? That would confirm my rough estimations. Seems the Oak is consuming a little less then I anticipated.

Thanks,
Jaka

cycob

jakaskerl Typo?

Good catch. Corrected:

**Oak-D-Lite POWER CONSUMPTON With Console Only Spatial Tiny Yolo**
(Wali is a set of ROS 2 Humble robot nodes over Ubuntu 22.04 in a Docker container)

- Base Pi5 running Wali 3.3W (Oak-D-Lite unplugged)
- Pi5 running Wali plus Oak-D-Lite first plugged in: 3.85W
- Pi5 running Wali plus console spatial tiny yolo.py 28fps: 3.95W (0.7W for Oak-D-Lite processing)
- Pi5 running Wali after console spatial tiny yolo.py shutdown: 3.98W (0.7W for Oak-D-Lite)

jakaskerl

Hi cycob
How are you measuring this? Unless you are running everything on the Pi, there is no way you would get such low power consumption.

Thanks,
Jaka

cycob

jakaskerl Unless you are running everything on the Pi, there is no way you would get such low power consumption.

Ah, the typo was not the total power - that was correct - rechecked and finally correct:

**Oak-D-Lite POWER CONSUMPTON With Console Only Spatial Tiny Yolo**
(Wali is a set of ROS 2 Humble robot nodes over Ubuntu 22.04 in a Docker container)

- Base Pi5 running Wali 3.3W (Oak-D-Lite unplugged)
- Pi5 running Wali plus Oak-D-Lite first plugged in: 3.95W (0.65W for Oak-D-Lite powered, non-running state)
- Pi5 running Wali plus console spatial tiny yolo.py 28fps: 8.05W (4.75W for Oak-D-Lite processing)
- Pi5 running Wali after console spatial tiny yolo.py shutdown: 4.18W (0.9W for Oak-D-Lite powered, non-running)

(vdepthai)pi@WaLiPi5:~/wali_pi5/systests/Oak-D-Lite/vdepthai/spatial_tiny_yolo $./console_spatial_tiny_yolo.py

NN fps: 28.3
person conf:2 % at X:17 Y:27 Z:628 mm

NN fps: 28.3
person conf:7 % at X:11 Y:35 Z:628 mm

NN fps: 28.3
person conf:8 % at X:11 Y:68 Z:628 mm
tie conf:3 % at X:23 Y:50 Z:628 mm

Holding a framed picture of me in a tuxedo (bow tie) in the FOV of Oak-D-Lite.

tonya

How do you boot the camera?