Portsdown 4 Transmit screen with web cam not showing

Discussion about this major DATV Project. See https://wiki.batc.org.uk/The_Portsdown_Transmitter
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G1BVI
Posts: 282
Joined: Wed Aug 02, 2017 7:32 am

Portsdown 4 Transmit screen with web cam not showing

Post by G1BVI » Sat Feb 13, 2021 4:16 pm

Hi All
Some free time and so to test my Portsdown 4

It is a RPi 4 and a lime mini
A powered USB hub with a pi camera and a logitec C920.

If I select any source other than the web cam it is displayed on the 7 inch touch screen

Looking on the analyser the lime is transmittng.

Is this a feature because of the processing requirements or is there a setting somewhere I missed.


Thanks all
73

Nick

G8GKQ
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Re: Portsdown 4 Transmit screen with web cam not showing

Post by G8GKQ » Sun Feb 14, 2021 3:43 pm

Nick

The only camera image displayed on the screen during transmit is the Pi Cam. This is because it hardly uses any extra processing power to do it.

Webcams and video capture devices cannot be displayed on the screen during transmit. A design decision.

Dave

G1BVI
Posts: 282
Joined: Wed Aug 02, 2017 7:32 am

Re: Portsdown 4 Transmit screen with web cam not showing

Post by G1BVI » Sun Feb 14, 2021 5:29 pm

Thanks for that Dave
tried to transmit today
I saw my signal on the web sdr but it looks like my dish has moved
I can work SSB but cannot even reveive the beacon on my Mini Tuner !!
just checking reception of BADR on a sat receiver which also failed !!!!

Looks like a job for next weekend !!

73

Nick

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