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Basic question I imagine. Don't have a clue.

Discussion in 'General Electronics Discussion' started by SeriousSeth, Nov 8, 2021.

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  1. SeriousSeth

    SeriousSeth

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    Nov 8, 2021
    Can I connect the positive and negative from a standard USB cable to the relevent terminals on a 3 pin JST connector to provide power?

    This would leave one terminal blank. I have a wireless mouse that charges via a dock (that I no longer have). The internal battery is connected via a 3 pin JST connector (guessing +, - and some form of battery management).

    I have a spare lipo battery lying around that has a 2 pin JST connector on it and an adafruit powerboost 1000c that manages the charging but outputs the power via a USB type A port.
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Technically this is possible. I don't know whether you can do it :)
    Hmmm, you're guessing.... You should be sure about this. Connecting a LiPo battery directly to 5 V will destroy the battery, you even risk fire.
     
  3. SeriousSeth

    SeriousSeth

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    Nov 8, 2021
    Pretty certain I'd be ok with the soldering. Have tinkered around with various projects.

    On the flip side you're right about the potential for fire so best not. If no help is available here it looks like I'll just have to throw the mouse away!
     
  4. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Knowing the make and type of the mouse could be useful.
     
  5. SeriousSeth

    SeriousSeth

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    Nov 8, 2021
    It's a Logitech MX1000.
     
  6. bertus

    bertus Moderator

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    Nov 8, 2019
    Hello,

    It looks like the docking bay is combined with the receiver:
    Box contents:
    • Mouse
    • Docking station which is also the RF receiver
    • USB to PS2 adapter
    • Instruction manual & driver CD
    • AC power adapter for docking station
    https://www.techpowerup.com/review/logitech-mx1000/single-page.html
    You can not use the mouse without the docking bay.

    Bertus
     
  7. SeriousSeth

    SeriousSeth

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    Nov 8, 2021
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