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Where did you get the camera module(s)?
https://www.devicemart.co.kr/main/index -
Model number of the product(s)?
B0197 -
What hardware/platform were you working on?
RPi4
Linux version 5.10.17-v8+ (dom@buildbot) (aarch64-linux-gnu-gcc-8 (Ubuntu/Linaro 8.4.0-3ubuntu1) 8.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #1421 SMP PREEMPT Thu May 27 14:01:37 BST 2021
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Instructions you have followed. (link/manual/etc.)
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Problems you were having?
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The dmesg log from your hardware?
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Troubleshooting attempts you’ve made?
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What help do you need?
I installed B0197 on about 400 raspberry pi 4s in remote locations.
And I am taking snapshots every 10 minutes using fswebcam.
However, there is a problem with about 40 devices.
Problem 1. If the USB is not found and a reboot is attempted, the problem is solved, but it reoccurs after 1-2 days,
Problem 2. USB is found, but recording is not taken with the response /dev/video0: No such file or directory, so turning the service off and on or attempting a reboot improves it, but it reoccurs after 1-2 days.
I visited the site and replaced the Raspberry Pi, but it happened again,
We are testing for 2 days by replacing the camera module and cable.
What kind of tests can I do to isolate the cause?
HW ?
SW ?