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This repository was archived by the owner on Oct 27, 2020. It is now read-only.
Configuration not detecting external webcam Serial #638
Description
We are trying to use an external camera for mineral detection. The configuration file detects the webcam, however, most of the time, the identified serial number is 0.0 which causes the program to error. We are able to resolve the issue by scanning for usb devices repeatedly, but haven't been able to identify a root cause. Any suggestions would be a great help.
Activity
gearsincorg commentedon Nov 12, 2018
Several questions:
What Webcam are you using?
What phone are you using?
Are you using a powered hub? (What kind)
How have you configured the USB connection?
webcamqn commentedon Nov 12, 2018
Thanks for the quick followup
Phone: Moto G4
Camera: ELP 170 Degree Wide Angle USB 5 Megapixel Webcam for Portable Video System : Link
USB Hub: TUSITA Micro USB HUB Adaptor with Power: Link
Configuration:: See attached picture.
kev626 commentedon Dec 27, 2018
My team is having this exact problem as well
Phone: Moto E4
Camera Logitech C170
USB Hub: Recommended Anker hub with backpowering setup
Configuration is identical
gearsincorg commentedon Dec 29, 2018
@kev626 mentioned "back powering".
Exactly how are you both feeding power into the hub? Are you sending power into the charger port? from where?
kev626 commentedon Dec 29, 2018
I'm taking power from the +5V port on the rev hub and sending it to the charge port on the USB hub according to this guide: https://github.com/ftctechnh/ftc_app/wiki/Using-an-External-UVC-Camera-and-a-Powered-USB-Hub#usb-hub
ftctechnh commentedon Jul 20, 2020
Fixed with a pull request that has been tested and merged into the private ftc_sdk repository.