Send Oak-D Lite Data to Arduino

hudson

Hi, I'm trying to send the x,y,z coordinates of hand tracking from this demo (https://github.com/geaxgx/depthai_hand_tracker) over to an arduino so that I can control some servos based on my hand movements. Is there anyway I can send the coordinates over to the arduino or have the oak-d lite send it to my computer, which sends it to the arduino?

erik

Hello hudson , it would be possible to connect SPI lines, but would be difficult (small test pads on Lite PCB, soldering wires, drilling hole in enclosure for SPI wires...). So I would go for the second option that you mentioned (OAK -> host computer -> Arduino)
Thanks ,Erik

hudson

erik is there any documentation/tutorials you could point me to on how to do this? I found this online: https://create.arduino.cc/projecthub/ansh2919/serial-communication-between-python-and-arduino-e7cce0 which uses the pyserial library to facilitate communication however it slows down the fps on the camera from 30 to 5 frames which isn't ideal.
I think the slow down is because the camera is sending the realtime xyz coordinates to the Arduino which the pyserial library isn't suited for. I'll try and debug it though, maybe switch the band to something else higher, and see if I can get it to communicate without slowing the fps.

hudson

Okay, turns out that changing the baud rate helps tremendously, and the frames only drop from around 30 fps to 29.8 - 29.9, which is good.

erik

hudson great, awesome to hear that you got it working!