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  #171  
Old 12-15-2018, 03:13 PM
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Quote:
Originally Posted by Overboost View Post
I guess maybe I am approaching this a little differently than just a back up camera. I want to have that rear image and front image recording whenever the ignition or radio is on through the DVR app in the android system.
So you ARE going to do something like what I was planning on doing. I want the cameras powered up all the time with ACC. Rear recording to the head unit, and front will record to onboard internal storage.

With my Avin 2 it required an analog reverse trigger. You've seen my method of providing it. I plan on modifying that schematic to have the NO pin of the relay have constant ACC 12v to the camera. Then keep NC with the reverse trigger and power to the camera. This way I retain PDC button trigger to display, reverse trigger by shifting, and the camera is powered all the time and feeding the head unit an image.

What I have not looked into yet is whether or not I will have to split the video signal from the camera into both the reverse cam input (RCA) and a Video In input (RCA) in order to have full time recording. Will have to see if an android DVR app will capture from the reverse cam input at all, let alone if it only does it during reverse triggers. We shall see.

It does not surprise me that Avin was not helpful in your specific use-case. What you (and I) are trying to accomplish is very edge case and probably not something they've been asked before, if ever. I'm sure they provide the analog reverse trigger so they don't have to worry about Canbus triggers and the like.

You're blazing a new trail. I hope to follow you soon.
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  #172  
Old 12-15-2018, 03:17 PM
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Technical help will be limited to the built in functions. Techs seldom go outside of that box.

Unless you find someone who has the exact same unit and the exact existing system and likely the same year vehicle input many not be correct. The risk of plowing new ground that damages the unit is even greater. I suggest separate equipment wired independent of the unit to achieve what you would like to do.
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Last edited by bcredliner; 12-15-2018 at 03:23 PM.
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  #173  
Old 12-15-2018, 03:21 PM
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Kind of sad they don't trigger the reverse thru the canbus decoder like the Seicane does. Even my eonons do that.
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  #174  
Old 12-15-2018, 05:16 PM
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Quote:
Originally Posted by crystalworks View Post
So you ARE going to do something like what I was planning on doing. I want the cameras powered up all the time with ACC. Rear recording to the head unit, and front will record to onboard internal storage.

With my Avin 2 it required an analog reverse trigger. You've seen my method of providing it. I plan on modifying that schematic to have the NO pin of the relay have constant ACC 12v to the camera. Then keep NC with the reverse trigger and power to the camera. This way I retain PDC button trigger to display, reverse trigger by shifting, and the camera is powered all the time and feeding the head unit an image.

What I have not looked into yet is whether or not I will have to split the video signal from the camera into both the reverse cam input (RCA) and a Video In input (RCA) in order to have full time recording. Will have to see if an android DVR app will capture from the reverse cam input at all, let alone if it only does it during reverse triggers. We shall see.

It does not surprise me that Avin was not helpful in your specific use-case. What you (and I) are trying to accomplish is very edge case and probably not something they've been asked before, if ever. I'm sure they provide the analog reverse trigger so they don't have to worry about Canbus triggers and the like.

You're blazing a new trail. I hope to follow you soon.
The DVR app within the Avant-3 is one of the nicer features of their unit. I offers a lane departure alert that I really would like to have. Having a feature like that on a 2004 brings the car more into 2015 technology. This video at 11:38 explains that feature.

https://youtu.be/x90ED5zboro

How the recording is processed I don't know and can't find these answers anywhere. It does create separate videos (front/rear) as seen in the video at 13:40. I know the front camera has the MicroSD slot for recording to it but no idea where the rear camera is recorded. Maybe the rear does get recorded through the head unit as you suggest.

Even the guy on the video claims his camera is powered from the reverse lights at 14:50 but the PIP view shows his rear camera clearly working in his video out of reverse.

These types of conflicting answers send my OCD into overdrive...


Quote:
Originally Posted by Crowz View Post
Kind of sad they don't trigger the reverse thru the canbus decoder like the Seicane does. Even my eonons do that.
In the end, one extra wire connection is not a game-changer but come on... Really?

Maybe some of the Fords, Nissans and Toyotas do not indicate reverse over the CAN bus decoder but the BMW does so why not use it.
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Last edited by Overboost; 12-15-2018 at 05:23 PM.
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  #175  
Old 12-15-2018, 09:14 PM
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Quote:
Originally Posted by Crowz View Post
Kind of sad they don't trigger the reverse thru the canbus decoder like the Seicane does. Even my eonons do that.
I'm pretty sure that's how both the Eonon in the E46 and the Xtrons work in my E53. Even the previous Eonon would trigger a blank screen- would have been an image if I'd ever connected a camera.

But you'd still have to power the camera. And that wire needs tapped. Since it's a reverse only camera (normally) tapping the reverse lights makes sense. Or am I not smelling what you guys are steppin in?

Seems to me that if you want full time recording, just power the camera on when the A/C is on. The trick is that these units only have the single line input for front- labeled DVR, IIRC. But, if you power both cameras and get something that'll send a split signal to the DVR input, you should get what you want using the radio.

Of course, if none of that is what you guys want, then I'll just read some more and stay quiet.
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  #176  
Old 12-15-2018, 10:01 PM
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Quote:
Originally Posted by PropellerHead View Post
I'm pretty sure that's how both the Eonon in the E46 and the Xtrons work in my E53. Even the previous Eonon would trigger a blank screen- would have been an image if I'd ever connected a camera.

But you'd still have to power the camera. And that wire needs tapped. Since it's a reverse only camera (normally) tapping the reverse lights makes sense. Or am I not smelling what you guys are steppin in?

Seems to me that if you want full time recording, just power the camera on when the A/C is on. The trick is that these units only have the single line input for front- labeled DVR, IIRC. But, if you power both cameras and get something that'll send a split signal to the DVR input, you should get what you want using the radio.

Of course, if none of that is what you guys want, then I'll just read some more and stay quiet.
Yes sir. In a normal scenario powering the camera only in reverse would work even with the 1 to 2 second boot time. What I am trying to achieve is full time front and rear recording whenever the car or radio power is on so the cameras will need that ignition switch position 1 or 2 power source. Easy enough.

Where I am struggling is the triggering event and wiring of 2 separate cameras. When I asked the rep for a wiring schematic or even pictures or the camera wiring harness I might have just as well been speaking in a foreign language. LOL he even told me the head unit powers the rear camera. I asked him how the **** do you power a camera from a video RCA jack ...

These Avin support guys are just keyboard warriors. I need to speak with someone with at least my level of comprehension...
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  #177  
Old 12-15-2018, 10:19 PM
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Quote:
Originally Posted by Overboost View Post
I asked him how the **** do you power a camera from a video RCA jack ...
Truth
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  #178  
Old 12-15-2018, 10:41 PM
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Quote:
Originally Posted by PropellerHead View Post
Truth
Actually, technically speaking, this is actually possible. But it's not the case in any of these car cameras...

DC power over the signal coax is a common way of feeding power up an aerial mast to an aerial booster (for TV reception)...
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  #179  
Old 12-15-2018, 11:10 PM
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Quote:
Originally Posted by wpoll View Post
Actually, technically speaking, this is actually possible. But it's not the case in any of these car cameras...

DC power over the signal coax is a common way of feeding power up an aerial mast to an aerial booster (for TV reception)...

BNC POC coaxial connector yes, RCA RF coaxial not so much...
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  #180  
Old 12-15-2018, 11:42 PM
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Power it off the radios power antenna wire antenna wire. That's what I do when I want the camera to have power when the radios on. I normally do this on trucks with trailer hitches since I want to see the hitch constantly even when going from drive to reverse.
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