If you have a car that is getting on in years, it may be missing some of the latest frills and features that the latest models sport. Muris has a slightly dated Audi A3 8P which did not have an AUTO setting for the headlights. In the newer models, this feature turns on the headlights when the ambient light falls below a threshold level (overcast conditions or when going through a tunnel), or when the windshield wipers are turned on. The light sensor is integrated behind the rear view mirror in a special mount, requiring an expensive windshield upgrade if he were to opt for the factory retrofit. Instead, he decided to build his own.
His local regulations require the car headlights to be on all the time when the vehicle is in motion. So adding this feature may seem moot at first sight.
Cele 50 de umbre ale lui grey online subtitrat. But Muris programmed the headlights to be powered at 70% during daytime conditions and switch to 100% when his sensor detects low ambient light conditions. In the power save mode, all of the other non-essential lights (number plate, tail light) are also turned off to hopefully extend their life. He achieved this by using the VCDS – a widely used aftermarket diagnostics tool for VW-Audi Group vehicles. His tiny circuit switches the lights between the two power settings. His plan was to install the device without disturbing the original wiring or light switch assembly in any way. The low-powered device consists of a PIC micro-controller, an LDR (light dependent resistor) for light sensing and a low current relay which switches between the two modes.
For those of you (like me) who have had the SDS High module installed/activated by Hazzydayz recently, you might like to know that Sean informs me that the software update is now completed so that you can use the 2013 maps.
Setting the threshold at which the circuit switches the output is adjusted by a variable trimpot acting as a voltage divider with the LDR. Muris wired up a short custom harness which let him install this circuit between the default light switch and the car electronics.
After switching on power, he has 15 seconds to enable or disable his unit by toggling the light switch five times, and that status gets stored in memory. The tiny board is assembled using SMD parts and is protected with a heatshrink sleeve. The circuit would work equally well with a lot of other cars, so If you’ve got one which could do with this feature upgrade, then Muris has the Eagle CAD files and code available for download on his blog.
Check out the video below where he runs a demo, describes his circuit in detail and then proceeds to assemble the PCB without using a vise or a third hand to hold the PCB. That’s a fancy watch he’s sporting at 00:50 s down the video. Posted in Tagged, Post navigation. “If you have a car that is getting on in years, it may be missing some of the latest frills and features that the latest models sport. “Muris has a slightly dated Audi A3.” Slightly dated is a 2007 vehicle? Roughly 11 years old is only slightly dated?
What do you consider actually dated? Doesn’t have OBD? Cannot find many parts for it? It’s interesting how complicated cars actually produced in the last 3 or so years are, even compared to ones from 8 years ago or so. Interestingly, the A3 was made for 9 years before being refreshed to the Typ 8V in 2013. Are the cycles of vehicle refreshes slowing down or speeding up here? Or is this just an Audi thing?
“That’s a fancy watch he’s sporting at 00:50 s down the video.”? Audi’s here in Sweden can have more basic features then even normal VW’s. I can’t understand the concept at all because in the US Audi is a luxury brand with all the luxury features.
I was just car shopping recently and the A4’s at the same price range as the Passat’s were definitely missing the nicer features. That being said my 2008 A3 8p has auto headlights, Xenon headlights and the nicer rear view mirror with auto dimming. Undoubtedly this was a package that he is missing and would be an expensive retrofit. An interesting addon. But I have the headlights on all the time when driving anyway. A better mod is to have headlights auto off when you turn the car off and open the drivers door.
Then you can leave the light switch on all the time. Headlight in the day time assist others to see you, particularly if you are approaching from the sun-ward direction. I often see folks driving their cars with just the parkers on when it is getting dark. They can see ok so they think that is ok. Headlights on all the time while driving is safer. I have daylight running lights (DRL) in my 2009 car.
We had the strange situation, that headlights-on or DRL was mandatory for some years, but luckily this was ended again. DRLs are OK, but I find headlights on in the day (especially in bright sunlight) quite annoying. Reflections of the sun are enough blinding light, we do not need more.
Particularly if somebody approaches from sun-ward. Another consequence of this annoying headlight-on at all times is, that people do not switch on the other (rear) lights in a tunnel, because the headlights are on anyway. This is as annoying as “parkers-only”. Anybody who is not able to see a car during daylight without extra illumination shall get his vision checked. So if you want to use light during the day, please get proper DRLs or at least dim the headlights down like the author of this article. Strongly disagree with the sentement of your post.
Most vehicles with LED DRL’s are absolutely blinding at night, however dip beams (which I drive with on 100% of the time) are perfectly fine at night. DRL’s are as dazzling as full beam headlights at night. But no manufacturer (or person) woudl drive around with full bam headlights on during the day. Dip beam headlights are designed to be used at night, and are barely visible during the day. I got into the habit of running them during the day as when driving a small or low car like an original MINI, or triumph spitfire, it did help other road users notice you in wet or foggy conditions, as are common here in the UK.indeed even in mormal size cars in the wet, if they are silver or grey, running lights helps a lot.