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Post by hobie411 on Aug 8, 2017 1:04:45 GMT
I have aftermarket LED fog lights. Is there a way to adjust the brightness of fog lights?
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Post by dv52 (Australia) on Aug 8, 2017 2:09:36 GMT
I have aftermarket LED fog lights. Is there a way to adjust the brightness of fog lights? Fog lights? Which ones-front, or rear?
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Post by hobie411 on Aug 8, 2017 2:12:14 GMT
Fog lights? Which ones-front, or rear? Front
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Post by dv52 (Australia) on Aug 8, 2017 13:25:23 GMT
Fog lights? Which ones-front, or rear? Front hobie: Nice car!!! So, the two Leuchte-sets for the front fogs are: - Leuchte12NL LB45 - left side
- Leuchte13NL RB5 - right side
For each of these Leuchte-sets, check that Lasttyp channel is 6 - LED LichtmodulTo adjust the illumination, change: Dimmwert AB channel >allowable range is 0-127Don
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Post by hobie411 on Aug 8, 2017 13:39:39 GMT
Thanks Don! I was literally in the car tinkering as you posted this. I found these dimmwert values and they worked perfectly.
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Post by robgti on Aug 8, 2017 22:49:42 GMT
Hobie411:
I've been interested in doing a similar install...Can you detail your install, pretty much, fogs did you go with and did you get the Euro headlight switch?
-Rob
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swag
New Member
Posts: 19
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Post by swag on Aug 9, 2017 3:33:35 GMT
This is interesting. I'll give this a try
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Post by hobie411 on Aug 9, 2017 13:23:40 GMT
Hobie411: I've been interested in doing a similar install...Can you detail your install, pretty much, fogs did you go with and did you get the Euro headlight switch? -Rob I have the deAutoLED bulbs. They came with in-line resistors, so coding the bulb type is optional. They're easy to install - direct replacement. The resistors have to be tucked away using tape, but it's not too hokey, I guess. I love that the LED light color now matches the drl's and headlights. They're really bright and I kept getting flashed by other drivers. Turning down the dimmwert level helped tremendously. I do have the euro switch. It allows for the fogs to turn on with the drl's in park light mode. I'm really happy with the setup. I'd be happy to answer any questions you'd have.
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Post by dv52 (Australia) on Aug 10, 2017 5:52:26 GMT
Hobie411: I've been interested in doing a similar install...Can you detail your install, pretty much, fogs did you go with and did you get the Euro headlight switch? -Rob I have the deAutoLED bulbs. They came with in-line resistors, so coding the bulb type is optional. They're easy to install - direct replacement. The resistors have to be tucked away using tape, but it's not too hokey, I guess. I love that the LED light color now matches the drl's and headlights. They're really bright and I kept getting flashed by other drivers. Turning down the dimmwert level helped tremendously. I do have the euro switch. It allows for the fogs to turn on with the drl's in park light mode. I'm really happy with the setup. I'd be happy to answer any questions you'd have. hobie: excuse my interference - but I need to make a correction regarding my earlier response. Your mentioned in your later post above that you retained the old incandescent setting for the lasttyp channels (which will be 10 - allgemeine Scheinwerfer). This means lots of things for the way that the module drives the lamps (ostensibly related to Pulse-Width-Modulation waveform for the lamp supply), but it also means that the maximum dimmwert value is now 100 (not 127 as I advised with the LED setting in the lasttyp channel) Don
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Post by hobie411 on Aug 10, 2017 12:03:11 GMT
hobie: excuse my interference - but I need to make a correction regarding my earlier response. Your mentioned in your later post above that you retained the old incandescent setting for the lasttyp channels (which will be 10 - allgemeine Scheinwerfer). This means lots of things for the way that the module drives the lamps (ostensibly related to Pulse-Width-Modulation waveform for the lamp supply), but it also means that the maximum dimmwert value is now 100 (not 127 as I advised with the LED setting in the lasttyp channel) Don Thanks Don! It's interesting that the max values would be different. In any case, I set the value down to 40 and didn't even consider going above 100. I've ran into similar situations where it states a max of 127, but simply wouldn't accept a value over 100. I don't lose any sleep over it 🙂
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Post by dv52 (Australia) on Aug 12, 2017 1:39:01 GMT
hobie: excuse my interference - but I need to make a correction regarding my earlier response. Your mentioned in your later post above that you retained the old incandescent setting for the lasttyp channels (which will be 10 - allgemeine Scheinwerfer). This means lots of things for the way that the module drives the lamps (ostensibly related to Pulse-Width-Modulation waveform for the lamp supply), but it also means that the maximum dimmwert value is now 100 (not 127 as I advised with the LED setting in the lasttyp channel) Don Thanks Don! It's interesting that the max values would be different. In any case, I set the value down to 40 and didn't even consider going above 100. I've ran into similar situations where it states a max of 127, but simply wouldn't accept a value over 100. I don't lose any sleep over it 🙂 hobie: Yes it is an interesting limitation. The reason why this happens is related to the way that the Central electrics module does lamp dimming (I think). Dimming is done with something called Pulse Width Modulation, which is just a fancy name for switching ON/OFF the 12 V supply quickly. The relative time between ON and OFF states determines the amount of dimming - so minimum illumination has lots of OFF time and maximum illumination has lots of ON time). Here's a trace from my scope for a dimmwert setting of 50%: Notice how the 12 Volts is "chopped-up" into ON/OFF periods. So, what I suspect happens is that the electronics inside the module treats incandescent and LED settings differently as follows: - For incandescent lamps which are voltage devices, control of PWM is done in an analogue way - hence the familiar decimal range 0-100
- For LED lamps which are current devices, control of PWM is done digitally - hence 0-127 (which is binary 1111111). But having 128 different settings is a bit of a nonsense because the human eye can't perceive such a fine graduation and because there is also an imperceptible difference in illumination once the value 100 is reached for all the LEDs that Ive seen
I think!
Don
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