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Eric Page
Joined: 15 Feb 2017
Posts: 245
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 Posted: Tue Dec 05, 2017 12:14 pm Post subject: Constructing an automatic RCA video camera feed splitter |
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At 06:00 PM 12/4/2017, "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com> wrote:
| Quote: | | The optimum board size is 1.175 x 0.630 for the 15-pin�shells. Let me know what you find for 25-pin . . . if you need to go that big. |
Oh, I'll definitely need to use the 25-pin. I'll post a drawing of the max board outline for that size.
Eric
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Eric Page
Joined: 15 Feb 2017
Posts: 245
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| Posted: Tue Dec 12, 2017 8:24 pm Post subject: Re: Constructing an automatic RCA video camera feed splitter |
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Components for the video mux arrived today. The DB-25 backshell has four small plastic bosses inside each half to locate the included cable clamp; these are easily removed with a small flush cutter or X-Acto blade.
I made a CAD template for the PCB to fit this backshell and the DB-25 connector, then printed it at 100% and cut it out to verify fitment. Pads for the connector's solder cups align well and the PCB fills the shell nicely. Drawing is attached.
My PCB layout for the mux will need a little finessing to fit this board outline, which I'll do in the next couple of days. I expect to have boards ordered by Fri, then I'll assemble one and send it to Alec for firmware testing.
Eric
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DB-25 PCB Blank.pdf |
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Airdog77
Joined: 24 Nov 2013
Posts: 80
Location: Northern Virginia
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| Posted: Wed Dec 13, 2017 12:29 am Post subject: Re: Constructing an automatic RCA video camera feed splitte |
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Very cool to see all this come together!
Thanks again Eric, Alec and Bob.
Cheers,
Wade
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Airdog
Wade Parton
Building Long-EZ N916WP
www.longezpush.com |
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Eric Page
Joined: 15 Feb 2017
Posts: 245
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| Posted: Sat Dec 23, 2017 8:42 pm Post subject: Re: Constructing an automatic RCA video camera feed splitte |
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Project update: A prototype PCB for the video multiplexer is assembled and ready for programming. I'll mail it to Alec next week so he can test his firmware.
Eric
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Airdog77
Joined: 24 Nov 2013
Posts: 80
Location: Northern Virginia
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| Posted: Sat Dec 23, 2017 9:06 pm Post subject: Re: Constructing an automatic RCA video camera feed splitte |
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Eric,
Again, awesome.
I love it when (multiple) plans come together! 
Cheers,
Wade
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Airdog
Wade Parton
Building Long-EZ N916WP
www.longezpush.com |
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Eric Page
Joined: 15 Feb 2017
Posts: 245
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| Posted: Tue Jul 31, 2018 10:26 am Post subject: Re: Constructing an automatic RCA video camera feed splitte |
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Update on the video multiplexer project:
Alec developed and tested firmware for the multiplexer, then programmed the prototype board that I sent him. He then returned it to me and I finished the assembly by adding the switching IC. I then packaged it up with some ancillary parts and mailed it to Wade, so he can give it a test when he gets to that point in his build.
More to follow once Wade reports on how the device works with his cameras.
Once we have a solid solution, I'll forward all of the design files to Bob so that he can host them in his archive.
Eric
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Airdog77
Joined: 24 Nov 2013
Posts: 80
Location: Northern Virginia
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| Posted: Wed Aug 01, 2018 2:29 pm Post subject: Re: Constructing an automatic RCA video camera feed splitte |
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Eric,
Just wanted to say thanks to you, Alec and Bob for making this idea become a reality. Impressive, quality work on the device as per usual.
I'll test it out as soon as I am able and report back.
Thanks!
Wade
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Airdog
Wade Parton
Building Long-EZ N916WP
www.longezpush.com |
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