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Old 3rd April 2013, 16:38   #1
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Default How to make cabin lamp dim out?

As the thread name suggests, I want to do a small mod where I want my car's cabin light to turn off slowly by dimming (& not at once) once I close the doors or whenever I turn them off.

I have seen it in newer cars and gives a nice feel to me.

Help appreciated!

Saket
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Old 3rd April 2013, 16:52   #2
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Default re: How to make cabin lamp dim out?

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Originally Posted by saket77 View Post
As the thread name suggests, I want to do a small mod where I want my car's cabin light to turn off slowly by dimming (& not at once) once I close the doors or whenever I turn them off.

I have seen it in newer cars and gives a nice feel to me.

Help appreciated!

Saket
If you are the DIY types, designing a Dimmer Circuit with simple Electronics would answer your question.

http://www.pcbheaven.com/circuitpage...ght_Off_Delay/
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Old 3rd April 2013, 16:56   #3
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Default re: How to make cabin lamp dim out?

DIY- yes, but very basic electronics. Not sure about this one.

But thanks for the link.
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Old 3rd April 2013, 17:08   #4
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Default re: How to make cabin lamp dim out?

You can buy a readily available product from ebay too:

http://www.ebay.in/itm/Line-Type-Car...#ht_4606wt_907

Usually, the Remote locking systems also come with this circuit and installing them on cars which never had this dimmer feature got one post installation.

Either designing a simple dimmer circuit would help of exploring online or accessory shop (More unlikely) should help you get a ready made circuit.
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Old 3rd April 2013, 22:12   #5
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Default re: How to make cabin lamp dim out?

From what basic electronics I know off, using a capacitor in parallel with the bulb will do the trick for you. Just get a 12V capacitor from any electronic components shop and get different pieces with varied levels of capacitance. They cost at the most 1 rupee per piece so you can experiment with the time. You can get capacitors of maybe around mili farads(I am not sure) to get the desired time.

This is the simplest idea I can think of.
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Old 3rd April 2013, 22:39   #6
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Default re: How to make cabin lamp dim out?

If I remember properly, there was a product from Roots India for this purpose. It was on their website some time back but now I could not find it.

The cheapest car I think to have this is Indica and it should be fairly easy to get the module as a spare.
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Old 3rd April 2013, 23:10   #7
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Default re: How to make cabin lamp dim out?

The above said effect is called theatre dimming and is standard in my Ritz diesel. I mean its a stock feature and some cars have it. My car have the feature without any central locking system installed.
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Old 3rd April 2013, 23:13   #8
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Default re: How to make cabin lamp dim out?

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Originally Posted by asdfvinay View Post
If I remember properly, there was a product from Roots India for this purpose. It was on their website some time back but now I could not find it.

The cheapest car I think to have this is Indica and it should be fairly easy to get the module as a spare.
Here you go, the one I was mentioning is the DeLight switch from Roots.

http://www.rootsindia.com/html/switches.html
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Old 4th April 2013, 00:10   #9
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Default re: How to make cabin lamp dim out?

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Originally Posted by junaid12345678 View Post
The above said effect is called theatre dimming and is standard in my Ritz diesel. I mean its a stock feature and some cars have it. My car have the feature without any central locking system installed.
You are right!! Hence I mentioned that this feature can be made functional in cars which don't have this as OE by either installing a Remote locking set-up that does this or a DIY by installing the dimmer circuit.

Theatre dimming as you call it was not a regular feature in cars sold few years before and now it is present in most of the cars.
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Old 4th April 2013, 10:10   #10
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Default re: How to make cabin lamp dim out?

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Originally Posted by asdfvinay View Post
Here you go, the one I was mentioning is the DeLight switch from Roots.

http://www.rootsindia.com/html/switches.html

Thanks Vinay for the link. Very much the solution I was looking for. But sadly there is no link for further info or buying. But I hope, this should be available with market sellers.
Thanks.

Also as audioholic said, I will try this experiment at home and see whether it's successful. If it works & is safe, should be the cheapest solution!

Thanks everyone for participating! But if someone has done a DIY or have some more ideas, please keep them coming.

Regards,
Saket
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Old 4th April 2013, 12:36   #11
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Default re: How to make cabin lamp dim out?

While am sure it is dramatic, there is another side to this too.

My old swift had this and the problem is that you tend to walk away in the night even if your door is not completely closed.

If dimming is not present you know from the switched on light the moment you close the door that its not been properly closed.
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Old 4th April 2013, 12:37   #12
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Default re: How to make cabin lamp dim out?

Quote:
Originally Posted by saket77 View Post
Thanks Vinay for the link. Very much the solution I was looking for. But sadly there is no link for further info or buying. But I hope, this should be available with market sellers.
Thanks.

Also as audioholic said, I will try this experiment at home and see whether it's successful. If it works & is safe, should be the cheapest solution!

Thanks everyone for participating! But if someone has done a DIY or have some more ideas, please keep them coming.

Regards,
Saket
Since your location says Ranchi, you may try to inquire with the following distributor for the product.

Mr. Rajesh Panjwani
M/s. Universal Auto Agencies
Sethia Compound
5, Main Road
Ranchi - 834 001
(Ph: 0651-2331515)
(Mobile: 94311-15286)
Email: panjwani67@rediffmail.com

http://www.rootsindia.com/html/ranchi.html
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Old 4th April 2013, 12:43   #13
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Default re: How to make cabin lamp dim out?

Quote:
Originally Posted by paragsachania View Post
Since your location says Ranchi, you may try to inquire with the following distributor for the product.

Mr. Rajesh Panjwani
M/s. Universal Auto Agencies
Sethia Compound
5, Main Road
Ranchi - 834 001
(Ph: 0651-2331515)
(Mobile: 94311-15286)
Email: panjwani67@rediffmail.com

http://www.rootsindia.com/html/ranchi.html
First of all, thanks a lot Parag for walking this extra mile!

I called them, but unfortunately, they have no idea what is that thing. I explained them that I saw this product on their website and what it does and all, but the guy replied that they don't have this product!
But many thanks to you for getting the contact.

Regards,
Saket
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Old 4th April 2013, 14:45   #14
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Default re: How to make cabin lamp dim out?

Quote:
Originally Posted by revintup View Post
While am sure it is dramatic, there is another side to this too.

My old swift had this and the problem is that you tend to walk away in the night even if your door is not completely closed.

If dimming is not present you know from the switched on light the moment you close the door that its not been properly closed.
That's a good point, but IMO, the dimming starts fairly quickly, I guess it turns dimming within a second or two. So, one should notice, if not in too much of a hurry.

Also, while locking, your car's security system should bring the un-closed door to your notice by turning the siren on for a few seconds.
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Old 4th April 2013, 14:53   #15
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Default re: How to make cabin lamp dim out?

Quote:
Originally Posted by saket77 View Post
That's a good point, but IMO, the dimming starts fairly quickly, I guess it turns dimming within a second or two. So, one should notice, if not in too much of a hurry.

Also, while locking, your car's security system should bring the un-closed door to your notice by turning the siren on for a few seconds.
Yep, the dimming starts immediately on locking the doors.
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