Camera

Discussion about this major DATV Project. See also https://wiki.batc.org.uk/The_Portsdown_Transmitter
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G4NRT
Posts: 62
Joined: Thu May 09, 2019 2:59 pm

Camera

Post by G4NRT » Sun Jul 14, 2019 12:24 pm

I have now built my Portsdown 2019 to the extent that I am able to see a testcard in ugly mode on both my Minitiouner v2 and on my Minitiouner-Express.

My Raspberry Pi is attached to the back of the 7" display and, as such is in a case such that I cannot easily gain access to it to attach the RPi camera flat cable.

What other options are recommended - preferably USB attached - that will also work for me? Is the Logitech C920 Webcam the best (supported) option? There seem to be a number of options and derivatives for this device. Which one should I go for?

My grateful thanks to all involved in this exciting project. Just seeing a test card across the shack was quite a thrill!

David G4NRT
Last edited by G4NRT on Sun Jul 14, 2019 8:56 pm, edited 1 time in total.

radiogareth
Posts: 317
Joined: Wed Jan 06, 2016 9:46 am

Re: Camera

Post by radiogareth » Sun Jul 14, 2019 12:58 pm

I'd persevere with the picam TBH, its such a compact performer and seems to work as a feed for most (all??) modulations. Longer ribbon cables can be had which will definitely help. If I recall I have two 45 flat folds in mine to get it where I wanted.
Gareth G4XAT

g4eml
Posts: 40
Joined: Thu Apr 26, 2018 9:36 am

Re: Camera

Post by g4eml » Sun Jul 14, 2019 6:27 pm

There is a guy in France that sells an adaptor kit that allows you to use a standard HDMI cable to connect the Pi camera. You can find it on Tindie.com, search for Pi HDMI.

It doesn’t make the camera HDMI compatible it just allows you to use a HDMI cable which is much more robust than the flat ribbons.

G8GKQ
Site Admin
Posts: 1288
Joined: Sun Mar 22, 2009 1:21 pm

Re: Camera

Post by G8GKQ » Sun Jul 14, 2019 8:51 pm

David

I recommend a RPi Camera with the HDMI cable adapters described by Colin. If you modify them as described here: https://wiki.batc.org.uk/CSI-2_to_HDMI they will work with most HDMI cables up to 2 metres in length.

I use them on 3 Portsdowns, and also on a Jetson Nano (which uses the RPI camera as well).

The long Ribbon Cables (available from https://coolcomponents.co.uk/) are very useful so that you can position the HDMI sockets on the front/back panel.

If you are going to try a webcam, then I recommend the C920. Excellent quality and it is the only one that I test Portsdown releases with (there are still some issues, but it's getting better).

Dave, G8GKQ

G4NRT
Posts: 62
Joined: Thu May 09, 2019 2:59 pm

Re: Camera

Post by G4NRT » Mon Jul 15, 2019 8:12 pm

Well the decision was made for me ... Amazon have one of their 'Prime Days' today and I was able to buy the C920 for £25 ... it was delivered this evening and works a treat! I really do need to sort out a powered USB hub though and a power supply for the cooling fan on my LimeSDR Mini!

I may well go for a Pi Cam later on as well but right now I am happy enough with the C920 ... I did find, however, that I had to specify it as Webcam rather than as C920 in the Portsdown 'source' menu otherwise it didn't come on. I am still only using Ugly mode so that may be the reason.

David G4NRT

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