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Today's Topics:
1. Re: Gray glitching but only one of of two identical cameras
(Barry Martin)
----------------------------------------------------------------------
Message: 1
Date: Thu, 20 May 2021 14:06:07 -0500
From: Barry Martin <[email protected]>
To: [email protected]
Subject: Re: [Motion-user] Gray glitching but only one of of two
identical cameras
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hi Mark!
On 5/20/21 8:08 AM, Mark Cooke wrote:
> Hi Barry,
>
> Possible to swap over the cameras?
>
> Possible to swap over the power supplies?
>
> Possible to swap over the SD cards?
>
> Possible to swap over the PIs themselves?
>
> Each one eliminates / narrows down the scope of where the issue might be.
Hi Mark!
?Noise? is good! Sometimes one comment will change the track and open to
another idea. :) I had switched Pi?s (both Pi 4?s @ 4 GB) because I had
noticed the CPU temperature was a little high (per vcgencmd) so created
one with a fan. Same glitching but new runs cooler.
Not overly convenient to swap cameras ? the current cameras are an
upgrade from the old ones ? both sets ELP (brand); current ones have a
much lower lux so much better for night monitoring. I think the old
cameras had a glitch problem too. One of the old cameras is being used
elsewhere and no problem.
What I did think of this morning was try separating the two cameras: run
on two Pi?s instead of one. Seems where I have used just one camera I
don?t have a glitch problem.
Power supply should OK: is the official Pi wall wart, so 5.1v @ 3A.
Direct wired into the wall wart (no USB plug other than into the Pi
itself), which is powered via a small UPS.
Swapping the SD card is an idea. Off-hand don?t know which brand card I
have in there. ...Running the Pi Speed Test: gave a ?pass? and
concurrently monitored with Task Manager ? noted a CPU Usage at 74% at
one point but nothing unusual with the videos.
Well: checked the RW Test Log and see this:
Raspberry Pi Diagnostics - version 0.6
Thu May 20 12:45:08 2021
Test : SD Card Speed Test
Run 1
prepare-file;0;0;12053;23
seq-write;0;0;12777;24
rand-4k-write;0;0;373;93
rand-4k-read;12775;3193;0;0
Sequential write speed 12777 KB/sec (target 10000) - PASS
Random write speed 93 IOPS (target 500) - FAIL
Random read speed 3193 IOPS (target 1500) - PASS
Run 2
prepare-file;0;0;13026;25
seq-write;0;0;13186;25
rand-4k-write;0;0;481;120
rand-4k-read;12454;3113;0;0
Sequential write speed 13186 KB/sec (target 10000) - PASS
Random write speed 120 IOPS (target 500) - FAIL
Random read speed 3113 IOPS (target 1500) - PASS
Run 3
prepare-file;0;0;17138;33
seq-write;0;0;25148;49
rand-4k-write;0;0;3774;943
rand-4k-read;12270;3067;0;0
Sequential write speed 25148 KB/sec (target 10000) - PASS
Random write speed 943 IOPS (target 500) - PASS
Random read speed 3067 IOPS (target 1500) - PASS
Test PASS
There are some fails in there. The card has been in use for some time
(at least two months) and the test indicates using on a fresh card. FWIW
the videos are saved to a remote drive via 5G WiFi.
...OK, here?s something odd: the glitching switched cameras. I had made
a copy of the original SD card (unknown brand) to San Disk Ultra. Intent
was to change the IP address on the newly-created card, put it in a
second RPi, move the glitching camera from the current RPi to the
new/test RPi. While inserting the card adapter cable loosened a camera
cable, getting the gray screen with ?Unable to detect camera? message,
so unplugged, replugged, rebooted ? now the glitching is on the other
physical camera but the configuration is still ?Camera1?.
So that seems to mean the physical cameras are OK and there?s something
about camera1.conf. Though camera2.conf is a essentially a copy of
camera1.conf. You confused as I am yet?!
Thanks for the help! :)
Barry
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