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PostPosted: Fri Feb 09, 2018 6:05 pm 
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Went to Maplin today and asked for a garage internal light with sensor that would switch on when doors opened. The salesman sold me a Energiser PIR Sensor Floodlight, 30 watt 90 Lumens, which he said should be good. Took it home and fitted it with the sensor facing the u/o door and light pointed opposite to light the garage. For some reason the sensor will not trigger when the door is opening, which is what I want it for, so that we don't have to get out and switch on a light.
Have I been sold the wrong thing, or are there different types of sensors that will recognise a garage door. Ir will trigger my movement and perhaps it's a 'warm' pickup as against cold? Any help would be appreciated.


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PostPosted: Fri Feb 09, 2018 6:22 pm 
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PIRs need some warmth from a living thing. The IR bit stands for *infra red*, given off by humans and animals in the form of heat.

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PostPosted: Fri Feb 09, 2018 6:27 pm 
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Does the garage door opener not already have a light built into it that switches on when the door opens?

Even if not it may still have terminals in it that you could use to switch on a light. Post the make and model no of the opener and I'll have a look for you.


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PostPosted: Fri Feb 09, 2018 8:44 pm 
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Thanks for that, I thought it may be something like that.The salesman should have known. What sensor do I need?
The automated doors, Horman Promatic, do have lights, but not very bright. My wife needs more light when it's dark, that's why I bought this extra light.


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PostPosted: Fri Feb 09, 2018 9:04 pm 
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Badgerboxes2 wrote:
.The salesman should have known.

Why should he have known? He only knows what you told him. (rhetorical question)

Regarding "sensors" it is to do with (as said) temperature and angle of view. In short there is no 100% g'teed to work "off the shelf" sensor that will detect car / garage door opening.

I am NOT saying it can't be done (It can, its easy if you know how, and are comfortable fitting parts.)

What exactly are you trying to achieve? I understand you want an additional light, but do you want it to:

1) stay on for X time or wait until you switch it off
2) Switch on as you approach the garage
3) Open the garage door
4) Switched on from inside the car
5) Some thing else


Are you comfortable with "connecting a few bits" ? or do you want plug and prey?

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PostPosted: Fri Feb 09, 2018 9:14 pm 
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The garage doors have been automated, so can be opened when approaching the garage. Rather that have to get out of the car, go to the garage and switch on lights, I wanted lights to turn on when the door moved to open, rather than have another remote to switch on from the cars. I explained this to the salesman. As long as the light stays on for a few minutes, that's all I'm after. The small lighting from the Automation units ( Horman Promatic) is not bright enough


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PostPosted: Fri Feb 09, 2018 9:45 pm 
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ok, but do you want "plug and prey" (That it works) or are you happy to put some bits together?

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PostPosted: Sat Feb 10, 2018 6:43 am 
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Would prefer plug i if possible on the basis that I am not too cleaver unless it's simple. Can you give both options please. More concerned to know what sensor would notice the doors opening rather than a person getting in the beam.


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PostPosted: Sat Feb 10, 2018 7:55 am 
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To be honest, I can not yet think of anything suitable that is "ready made"
You have to bear in mind that a moving door is an inanimate object so it gives off "no heat" and it goes from A to B and back to A so the most reliable way of detecting it move is to
1) Mount a switch / proximity sensor on / near the door
2) Mount a set of "beams" (They do exist) inside the door so that as the car drives in, it breaks the beam and starts a timer.

I am also wondering about something "Looking" at the door opener's light, so what that comes on, it turns on another light.

(It could also be done by adding a relay, but that involves said object being opened up and altered)

:sign7: what about changing the lamp that is in the door opener? what fitting is it and how many watts? might be able to get a LED one that is brighter.

Any one else have any plug and play suggestions?

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PostPosted: Sat Feb 10, 2018 11:09 am 
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Just back from returning the light I bought and explained the problem. Another guy was very helpful and when I explained that inamite (cold) items need to be seen by the sensor, he looked it up on the Maplin system. Apparently it needs to be an MW sensor, which I believe someone else mentioned. I will now try and find a much brighter floodlight with an MW sensor. Thanks to all who have commented.


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PostPosted: Sat Feb 10, 2018 12:32 pm 
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only just seen this thread - a light with a microwave sensor will do the trick

eg.

http://cpc.farnell.com/pro-elec/pel0041 ... dp/SR09944

3rd item down

https://www.tlc-direct.co.uk/Main_Index ... index.html


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PostPosted: Sat Feb 10, 2018 2:35 pm 
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Badgerboxes2 wrote:
Would prefer plug i if possible on the basis that I am not too cleaver unless it's simple. Can you give both options please. More concerned to know what sensor would notice the doors opening rather than a person getting in the beam.


In that case you can forget about the voltage free relay in the opener that could be used to run whatever you wanted and you are better off fitting a microwave sensor light


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PostPosted: Sat Feb 10, 2018 3:26 pm 
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Bob225 wrote:
only just seen this thread - a light with a microwave sensor will do the trick
eg.

http://cpc.farnell.com/pro-elec/pel0041 ... dp/SR09944

3rd item down

https://www.tlc-direct.co.uk/Main_Index ... index.html


Thanks Bob, thats a great help.
Also only-me, who confirms that a MW sensor is the one to go for.

Much appreciated by all. A very friendly and helpful forum :cheers: :cheers: :cheers:


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PostPosted: Sat Feb 10, 2018 7:50 pm 
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Just wondering, what is the garage door made of?

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Take it easy, a forum is only a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link. to find out more.

No such thing as "Thou shalt put this wire here, Thou shalt put that wire there" .............Take a picture BEFORE you do the job.

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PostPosted: Mon Feb 12, 2018 10:52 am 
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The doors are wood and aluminium. Had the sensors pointing towards edge of door for greater movement than just facing them. PIR not sensing which is why MW needed?


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