Larson Scanner with an external DC PSU hooked up to a motion detector?

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  • #20183
    dagomatic
    Participant

    Hello… I did a search and did not find any threads discussing this option so…. What I want to do is to hook up my Larson Scanner to a motion detector, so when someone enters the room the red LED’s fire. I have tons of DC wallwarts lying around and I am sure I could modify one to work, I just don’t what the appropriate voltage and amperage should be…. any help?

    best,
    dag

    • This topic was modified 2 years, 4 months ago by Windell Oskay.
    #21170
    Windell Oskay
    Keymaster

    The Larson Scanner is designed to run off of 3 V DC, if you use the standard red LEDs.  You can swap out and use larger resistors (say, 100 – 150 ohm), if you’d like to run it off of 5 V DC.  As far as current goes, it’s under 50 mA, max.

    Now, I don’t know what the output of your motion detector looks like, but you also need to think about that, and how it relates to the Larson Scanner. :)
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