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n/a
DELETED (Inactive)
16 Posts |
 Posted - Jan 28 2004 : 09:56:42 AM
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hi
i have been attempting this circuit and it is working pretty well, except for one little problem. the circuit is only sensing light from very close ranges, does anybody have a solution so that the light can be sensed from much further away?
i would very much appreciate any help or advice.
thank you
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cirvin
Nobel Prize Winner
USA
1542 Posts |
Posted - Jan 28 2004 : 10:04:27 AM
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You coud try using some lenses. Try putting a magnifying glass in front of the sensor.
http://daxter12.topcities.com |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jan 29 2004 : 09:03:22 AM
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Try decreasing the value of R1 to 1K.
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n/a
DELETED (Inactive)
16 Posts |
Posted - Feb 01 2004 : 1:44:14 PM
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thanks for your suggestions guys, i will be trying them in the next few days and shall let you know how i get on.
i was wondering if anybody has already managed to successfully use this circuit with their vehicle?
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n/a
DELETED (Inactive)
16 Posts |
Posted - Feb 13 2004 : 08:22:56 AM
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Any more suggestions guys? still not working suitably.
Also, i think this would be really interesting, does anyone know of a way to stop the circuit switching the lights high/low when streetlamps are on?
thanks for your help and also for the original circuit, very interesting hobby!!
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ecm
Apprentice
Canada
89 Posts |
Posted - Feb 13 2004 : 6:03:00 PM
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use a shield around the sensors like a shade .
I have a circuit for the same idea I will try to find it and compare it to see if its desing differently .
to do or not to do |
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n/a
DELETED (Inactive)
16 Posts |
Posted - Feb 14 2004 : 08:23:48 AM
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yes please do ECM, i would much appreciate any more information/ideas on this.
thanks
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ecm
Apprentice
Canada
89 Posts |
Posted - Feb 15 2004 : 2:02:18 PM
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been looking no luck so far I have so manny books to go trough it may take a couple of days but i will find it .
to do or not to do |
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ecm
Apprentice
Canada
89 Posts |
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n/a
DELETED (Inactive)
16 Posts |
Posted - Feb 20 2004 : 10:05:21 AM
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thanks for help ecm, much appreciated
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n/a
DELETED (Inactive)
16 Posts |
Posted - Feb 23 2004 : 11:44:34 AM
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i was wondering how you can connect this circuit up to the counter circuit on this website?
i have purchased a voltage regulator to make the voltage 5V from 12V for the counter circuit and have connected them up from the first relay on the switch circuit into the voltage regulator and through this into pin 14 on the circuit.
i think what is happening is that there is a problem with the pulse sizes and this is making the counter display look as though it is jumping all over the place. either that or the signal from the relay is not compatible with TTL.
does anybody have any suggestions as of how to correct this part?
any information would be greatly appreciated.
thank you
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Tom_E
New Member
USA
3 Posts |
Posted - Jan 04 2005 : 10:18:46 AM
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DD,
This may be worthless to you but nevertheless: In the 50's Caddy's and Olds had a auto dimming system for the headlights. I took one out of a junked car and put it in a 56 Pontiac. That has been years ago. I do remember that street lights would cause it to dim the headlights or brighten them if ( as in those days was freuquently the case) the street lights were to far apart. A detector head set up on the dash and had a rotary control on the rear so that the drvr could adjust the sensitivety of the unit. I remember that the front of the sensor had a thick lens on it. It was really a handy device which I really enjoyed. I would guess that it was dropped due to maint ptoblems that were casued by operator error in most cases.
The whole system consisted of the dector head, a special dimmer switch ( floor mounted as were all for that time) and a control box.
I may be way off base with this post , if so please excuse me. Tom
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automatic headlamp brightness switch
