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Thread: Inserting A Power Level Indicator Into My Design

  1. #11

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    Also I'm not having a recharge port, so between battery and sound board if I have enough wire

  2. #12

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    Ok, this may be a dumb question, but I've never seen this in practice, are the PLIs functional or are they just for show with all the lights on.

  3. #13

  4. #14

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    So yes if I cut that lead?

  5. #15

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    They're always functional. That's why they have a huge chip on the back. You cut the lead to change the "mode".

  6. #16

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    From the store page:

    There are 10 LED's (5 green, 2 yellow, 3 red) which light up depending on battery voltage.
    For 3.7V li-ion battery cell the LED's will all be off at 2.4V and all on at 3.7v
    For 7.4V li-ion battery pack the LED's will all be off at 4.7V and all on at 7.3v

    The PLI is setup for a single 3.7v Li-ion cell with all active LED's lit by default.
    It can be used with a 7.4v Li-ion pack by bridging the two small solder pads on the backside as shown.
    It can be setup to only show one LED at a time by cutting the chip lead as shown.
    It's a fully functional PLI. You can have a bar that fills up, or have a single LED showing the charge level.
    We all have to start somewhere. The journey is all the more impressive by our humble beginnings.

    http://led.linear1.org/1led.wiz for the lazy man's resistor calculator!
    http://forums.thecustomsabershop.com...e-to-Ohm-s-Law for getting resistor values the right way!

  7. #17

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    Thank you SS your description is most accurate to what I want

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