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Need Help With Motion Sensor Controlled Strobe LED.

Discussion in 'Sensors and Actuators' started by Rory Starkweather, Nov 13, 2014.

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  1. Rory Starkweather

    Rory Starkweather

    77
    7
    Nov 13, 2014
    I have the LED and the motion sensor, but they didn't come with spec sheets and the Manufacturers websites didn't have anything either

    The strobe is a Luxeon SP-01-N4

    The motion sensor is a CEG007100.

    I'm at a loss.

    Also, any suggestions on whether to use a relay or an optoisolator/transistor to control the the big battery?
     
  2. hevans1944

    hevans1944 Hop - AC8NS

    4,459
    2,074
    Jun 21, 2012
    Gee, is your Google search function broken? The Luxeon SP-02-N4 is a single LED module that requires up to 1 A of DC with a compliance voltage of at least 3 V. A constant-current power supply is recommended. The CEG007100 is surplus OEM product imported from China. It is rated to operate from 4.5 to 20 V DC. Its output appears to be a logic level, high being 3.0 volts and low being 0 volts. It is anybody's guess as to how much current it can sink or source, but probably not enough to light up your LED strobe. An interface to convert the logic level to a relay contact closure for the LED is advised. This interface could be as simple as a power transistor or MOSFET and a resistor. You should experiment.
     
    Arouse1973 likes this.
  3. Rory Starkweather

    Rory Starkweather

    77
    7
    Nov 13, 2014
    I apologize for not googling the information. I will try to take more advantage of available resources in future.

    Thank you for your quick and comprehensive answer.
     
  4. hevans1944

    hevans1944 Hop - AC8NS

    4,459
    2,074
    Jun 21, 2012
    Do you need help in testing the PIR device? Do you know how to purchase, or build, a constant-current power supply to drive the LED? The title of your post implies you intend to rapidly flash (strobe) the LED on and off. How fast? How many on-off cycles per minute or second or whatever? How do you intend to accomplish the flashing, if that is what you intend to do? A relay, even a reed relay, may not be suitable for fast strobing. Is the PIR device going to illuminate the LED when it "sees" a human being in its field of view? It would be helpful if you could upload hi-res pictures of both sides of the PIR device so we can attempt to identify the power connections and the output connection. The image at the link I provided in post #2 shows only a three-pin, board-mounted, in-line connector. Presumably one pin is "ground"; one pin is "supply"; and the third pin is the "output". But which pins are which?
     
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