(Side Assist) / (Blind Spot Detection & Rear Cross Traffic Alert) retrofit

RTA or RCTA (rear cross traffic alert) gives 2 types of warring to the driver while reversing out of parking spot.
Acoustic and visual via infotainment unit & IC.
Should the driver fail to react to the warning, the system may apply the brakes to prevent collision with the crossing vehicle.

 
RTA or RCTA (rear cross traffic alert) gives 2 types of warring to the driver while reversing out of parking spot.
Acoustic via speakers, and visual via infotainment unit & IC.
Should the driver fail to react to the warning, the system may apply the brakes to prevent collision with the crossing vehicle.

We know that.... :) tell us more how it's done on your T6?
 
We saw that... tell us how to made it to work...
Mate, it is still not 100% finished.
As I said already I will share with all of my experience and "knowledge":)
My intension is to give everybody comprehensive guide that would cover all aspects of this additional system.
And again this system was designed for MQB platform so I am still not sure if all features are going to be available on PQ25 platform.
 
The concept is good but I really dont like this idea of the flashing warning signals being mounted in the side mirrors where they're visible to overtaking vehicles.
Turn-indicators on mirrors are quite common now so if you see a flashing mirror you assume the car is about to pull out.
Imagine if every time you began to pass a car, it indicated that it was about to pull out into your path. Why not have an internal warning instead?
For bikers with our heightened awareness when overtaking its even worse, with the flash prompting emergency braking...
Cheers
Phil
 
The concept is good but I really dont like this idea of the flashing warning signals being mounted in the side mirrors where they're visible to overtaking vehicles.
Turn-indicators on mirrors are quite common now so if you see a flashing mirror you assume the car is about to pull out.
Imagine if every time you began to pass a car, it indicated that it was about to pull out into your path. Why not have an internal warning instead?
For bikers with our heightened awareness when overtaking its even worse, with the flash prompting emergency braking...
Cheers
Phil
The warning light is on the inside edge of the mirror casing. It's only really visible from inside the van. Unlike other makes that are in the mirror glass.

4A321132-AF4A-42B2-91F9-A035005C692E.JPG
 
The upgrade from 7E0 radars
20190920_153613.jpg

to 5Q0 radars
0a74Sr.jpeg
adds extra RTA system onboard, obvious!

SIDE ASSIST system on MQB (5Q0 radars) produces 12V DC output to mirror indication LEDs
but on PQ25 (7E0 radars) the voltage output for LEDs is only 5.5V DC.
So in order to use original T6(7E1/7E2) mirror indication LEDs with 5Q0 radars
20190923_125533.jpg
some modification/addition is required.

Initially I was going to add simple power resistors (47Ω) in series but quickly realised that we are in the 21th century
and nowadays electronics can be much more sophisticated :sneaky:.
The voltage needs to be reduced from 12V DC to 5.5V DC so why not use a DC voltage converter:thumbsup:
I am experimenting with "buck converter", "linear voltage regulator" and few other similar "converters"
to see which one is going to replicate the voltage in the best way.
Basically I would like to keep that slow fade in and slow fade out effect on my existing LEDs with new 5Q0 radars:)

 
The voltage needs to be reduced from 12V DC to 5.5V DC so why not use a DC voltage converter:thumbsup:
I am experimenting with "buck converter", "linear voltage regulator" and few other similar converters
to see which one is going to replicate the voltage in the best way.
Basically I would like to keep that slow fade in and slow fade out effect on my new 5Q0 radars
Perhaps just using a zener-diode to create a constant voltage drop would do the trick.

I think e.g. a 8.2V/1Watt zener might suffice as the light is not continuosly lit. Is the current draw of T6 LED 0.10A - as on your picture? That would cause 0.8W momentary load on diode. Possibly a resistor in series to limit the current just in case...
upload_2020-3-28_10-17-36.png
 
Perhaps just using a zener-diode to create a constant voltage drop would do the trick.

I think e.g. a 8.2V/1Watt zener might suffice as the light is not continuosly lit. Is the current draw of T6 LED 0.10A - as on your picture? That would cause 0.8W momentary load on diode. Possibly a resistor in series to limit the current just in case...
View attachment 64138
This sounds like a good idea.
Obviously 2 sets would be required one for either side.
And yes, current consumption is just below 0.1A .

See below.
Screenshot_20200328-085529_Gallery.jpg

Screenshot_20200328-084950_Gallery.jpg
 
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The ingenuity at overcoming hurdles that vw have (maybe.. not..) inserted to cause a headache so they can segregate their prooducts, i commend.
I remember looking at stuff from the mk4 golf and thinking how lucky i was to have pretty much everything already there and some of the hurdles people had to jump through to get the same result where the option box at factory was so much cheaper than a retrofit(and no time consumed)...
Keep at it. nearly there it seems. :D
 
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