Wireless Video Broadcast?
Posted 05 April 2016 - 04:59 PM
I just don't know what i would do without you guys........... well i do, i would just add to my already huge collection wrongly ordered electrical bits. but this way is much easier
Posted 05 April 2016 - 06:52 PM
Here's a photo of my modified CCTV camera, with the quadcopter 5.8GHz video transmitter fitted inside the housing. Most of the space inside the alloy camera housing is just empty, the camera and IR lights are on a small circuit board on the front, that comes out when you under the two screws either side. I drilled a hole to take the antenna connector on the transmitter module fitted a plastic grommet and then screwed the antenna on from outside and it fixed the transmitter in place. The transmitter has several wires, but you can ignore some. There's a red for +12V and black for ground that can go to the camera supply and yellow for the composite video input that can connect directly to the video lead coming from the camera. I simplified the camera lead coming out of the back, it originally had a 12V power connector and a BNC video connector. I just removed the video cable completely and left the power cable (you can see the connector wrapped with self-amalgamating tape to weatherproof it).
On the other end, inside the house, I have a small compact flash DVR (around £20 or so on ebay) fitted to a plastic box with a 12V power supply in it. Behind the little 7" monitor there is an RC305 5.8GHz receiver, set to the same channel as the transmitter. The picture below has a very blue tint, something to do with the photo, as the picture on the monitor is very clear and the colours look normal. I have the video out from the receiver plugged into the video in phono on the DVR (you need a gender change adapter, with male phonos at each end, as the receiver is female as is the DVR). You may need to a lead to adapt the female phono from the receiver to a BNC for your DVR. I fed the video out from the DVR to the monitor, as the DVR does the date time stamp thing and also allows the motion sensing zones to be defined. The receiver has a second video output and I have fed that to a video to USB converter, so I can also record video on the PC, or send it to my web server when I get it set up.
Posted 05 April 2016 - 08:07 PM
right now all i need it for is so i can "at a glance" see who just stopped at the end of the drive. but now i have bought the box and 4 cameras i wouldn't mind the ability to check if i hear someone pull up "round the back" hence the box being in the workshop and me sending the DVR video out back instead of just sending the one camera back.
on your own web server it will probably be very useful but giving a live feed of my house to a company just seems crazy to me..
Edited by ConstructionChannel, 05 April 2016 - 08:08 PM.
Posted 06 April 2016 - 04:58 PM
iv tried almost all combinations of wiring and the monitor just said no signal unless it is connected to its original camera....
currently i have a BNC to Phono adaptor in the V-out socket on the back of the DVR from that i have a yellow phono lead i cut off a PS2. the core of that is attached to the yellow wire that goes into the little silver box (the transmitter)
and i have tried connecting the black lead from the transmitter to both the outer wire of the yellow phono lead and to its original cable and however i try it the screen just says no signal,
change it back to the original camera and it works fine
Posted 06 April 2016 - 05:04 PM
Posted 06 April 2016 - 05:20 PM
IMG_1279.JPG 30.46K 6 downloads
and this is the leads i have cut on the transmitter, I'm powering the whole circuit board with a 7.4v Li-Po battery that i use in the drone.
IMG_1280.JPG 49.28K 8 downloads
i have tried connecting them all ways and its just not working
the only thing i haven't tried is cutting the red wire???
Edit: I'm powering the CCTV with the lead it came with, and the transmitter with the battery
Edited by ConstructionChannel, 06 April 2016 - 05:23 PM.
Posted 06 April 2016 - 05:27 PM
Do you have the black wire from the transmitter connected to the ground on the video camera output, as well as the yellow wire connected to the video out?
Edited by jsharris, 06 April 2016 - 05:27 PM.
Posted 06 April 2016 - 05:31 PM
if so yes, well i tried it on both and even with all 3 connected but no luck.
Posted 06 April 2016 - 05:48 PM
Posted 06 April 2016 - 06:21 PM
If so, then the video out should be standard composite video, I've yet to find any of these cameras (except the IP ones) that don't put out a 1V p-p composite video signal, even cat reversing cameras and the little board spy cameras use composite video.
Similarly, the transmitter module should also just accept composite video in on the yellow lead, I've played with a few and they have all been the same. I can't believe that this budget quad used non-standard parts, as standard composite video out board cameras are only a few pounds each.
Posted 06 April 2016 - 08:56 PM
IR color CMOS camera
Power DC: 12v
I'm going to try and think of a way to check it is outputting, HDMI works as i have has it on my tv, but i want to make sure the V-out doesnt need to be selected in a setting somewhere
Posted 06 April 2016 - 09:13 PM
as in the yellow lead has got a picture in it, it just doesnt seem to transmit.....?
Edited by ConstructionChannel, 06 April 2016 - 09:14 PM.
Posted 06 April 2016 - 09:21 PM
Posted 06 April 2016 - 09:28 PM
Posted 06 April 2016 - 09:41 PM
Posted 07 April 2016 - 06:34 AM
Edited by jsharris, 07 April 2016 - 06:35 AM.
Posted 07 April 2016 - 05:09 PM
next question is where do you think it is setting the frequency/channel?
after i have charged this monitor a bit i am going to try to feed the video from the phono lead somewhere further back on the drones circuit board as its the only thing i can think of. when i change from the original camera to the phono lead there isn't even a blip it just goes to "no signal" which makes me think the channel is getting set before the silver box.......... any other thoughts as this is all i can think of to try... by all rights it should already work
Posted 07 April 2016 - 05:13 PM
When I get home later I'll see if I can do a sketch of how the wiring should be.