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| Thread ID: 58847 | 2005-06-14 05:33:00 | PIR motion sensor | sam m (517) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 363761 | 2005-06-14 05:33:00 | I dismantled a motion sensor outdoor light and wonder if anyone can tell me what the 3 wires of the motion sensor do (red/blue/brown). I have an idea. | sam m (517) | ||
| 363762 | 2005-06-14 05:52:00 | One lead will be a common signal and power ground, one will be power in, probably 5volt, and then there will be a TTL high output. But your guess is as good as mine as to which is which :) There is some typical info here: www.hvwtech.com Edit: your guess will be better because you will know where the wires went to ! |
Terry Porritt (14) | ||
| 363763 | 2005-06-14 07:11:00 | Usually those colours you referring to are the connections to the mains wiring. Brown=Phase , Blue=Neutral , Red=lights The ones I have pulled apart have the same coloured wires to connect the power supply & relay board to the Sensor board. Normally 3 wires are connecting the two boards, with +8.5Vdc , common , detection output. Maybe you could expand further on how much you have dismantled. |
pheonix (36) | ||
| 363764 | 2005-06-14 07:18:00 | The lamp holders broke on my security lights. I replaced the whole unit and then pulled the sensor part away from the main body of the light unit. It was a while ago so dont trust my memory as to where the wires went. Just thought there would be a standard colour system that might help. I might be able to pull it apart even more which might determine where the wires go. | sam m (517) | ||
| 363765 | 2005-06-14 07:34:00 | Then it is how I explained in the first part of my post. Power into it is Brown=Phase and Blue=Neutral (230Vac mains power) Lights go between Red and Blue. All is 230Vac mains voltage, so is dangerous. |
pheonix (36) | ||
| 363766 | 2005-06-14 08:15:00 | Might have lead you astray phoenix . I know nothing of how these things work and was going to use this sensor for another purpose . My thought is to use the sensor part only to activate one of those aerosol spray things that you buy for keeping insects out of the house . I was thinking of using something like that with a motion sensor so that when cats walk by it sprays (not sure what yet)and hopefully scares them away . If this sensor is powered by 230v then it is not what I am after . Thanks for replies . |
sam m (517) | ||
| 363767 | 2005-06-14 10:57:00 | Surley it's not powered by 230v ac? There has to ba a transformer in there somewhere.....doesn't there? | pine-o-cleen (2955) | ||
| 363768 | 2005-06-14 20:55:00 | The units are normally powered by 12V, but without seeing it it's difficult to tell what the wires are for. The 3 wires may be the relay connection, 1 being common (brown), one for normally open and one for normally closed connection. Are there any more sockets to connect wires to for powering it up? May be a block connector. |
BoboTheClown (5652) | ||
| 363769 | 2005-06-14 21:03:00 | I am sure pheonix is correct, those are almost certainly 230v connections. I was thinking that sam had dismantled down to component level, but then afterwards thought that the component sensor would maybe have been soldered directly onto a pcb rather than having long leads. I have a unit not being used somewhere, I'll have a poke around in it and see. |
Terry Porritt (14) | ||
| 363770 | 2005-06-14 21:20:00 | Found the rest of the security light unit. There are brown wires that go to each of the lamps and they are connected to each other, BUT the red wire from the PIR was connected to them. (I cut the red wire from the sensor which was joined to these 2 brown wires) There are 2 blue wires that go to each of the lamps and the blue wire from the sensor was connected to this. There is another light blue wire connected to this group that did not go to the sensor. That means that the brown wire from the sensor was not directly connected to the lamps. Looking at the wires the sensor brown wire and the light blue wire from the lamp unit were not cut and I think they went into a block connector. |
sam m (517) | ||
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