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Thread: Voltage for 6 Port AX/MX Dynamixel Power Hub

  1. #11

    Re: Voltage for 6 Port AX/MX Dynamixel Power Hub

    Or just put in a Schottky diode with sufficent amperage rating (5A or more.) As a bonus, the power supply will then keep the batteries charged as they deplete. The diode drop is enough to make sure 3S batteries are not overcharged from a 12V supply, even if that supply is slightly high.

  2. Re: Voltage for 6 Port AX/MX Dynamixel Power Hub

    How safe is that method of charging jwatte? I would love to have that kind of functionality. Why are LiPo chargers so expensive if such a simple connection works?

    The Schottky diode route seems a little above my head at the moment...

    I like that HUV Robotics board, think I might go for it but will keep reading for now...

  3. #13

    Re: Voltage for 6 Port AX/MX Dynamixel Power Hub

    Why are LiPo chargers so expensive if such a simple connection works?
    It doesn't "charge" the batteries as much as "keep them from falling too low." They will not have a full charge.
    Also, LiPo chargers will balance the cells so they're all charged equally; this method will not, so you'll still want to use a real charger once in a while.
    A LiPo charger also has other safeties to avoid over/undervoltage, adapt to different numbers of cells, etc.

    The Schottky diode route seems a little above my head at the moment...
    It's a diode. You can buy it and solder it in series with your connectors. Just make sure to solder it with the ring away from the "+."
    Here's one (5A rating): http://www.digikey.com/product-detai...9-1-ND/2075783
    Here's another one (10A rating): http://www.digikey.com/product-detai...SCT-ND/2334476

    Anyway, if you want a complete board, the HUV board seems fine for your needs.

  4. Re: Voltage for 6 Port AX/MX Dynamixel Power Hub

    removed
    Last edited by Snoopy; 05-31-2020 at 07:40 PM.

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