Powering Cyton Board using dedicated power supply

RadaMikeRadaMike Dallas
in Cyton
Hi i am using my Cyton board so much that i am finding myself replacing the batteries daily.
Is there a suggested method to powering the Cyton board using a dedicated power supply?
I know the Cyton operates between 3.3V and 12V but do not know the current it operates at.

Any suggestions would be very helpful.

Thanks,
Mike

Comments

  • wjcroftwjcroft Mount Shasta, CA
    Mike, hi.

    Have you tried using a larger LiPo cell? It's best to run from batteries for both safety and power purity.


    The Cyton is 3.3V based. With onboard regulator that converts higher voltages (up to 12) down to 3.3. The mainboard uses about 50 mA, but SDcard can use bursts of 200 mA. Daisy will add something less than 50 mA.

    Typical AA alkaline cells have about 2500 mAh. NiMH rechargeables are only around 1500. Adafruit has larger LiPo cells, for example 2500, 4400, 6600, etc. They also sell the chargers.

    Another route you could go are the all-in-one USB "power banks", which supply 5V at various mAh. However these typically contain switch mode power supplies to take the LiPo voltage and raise it 5V. Such switching supplies can introduce subtle power supply noise. Which can distort microvolt level analog to digital conversion.

    Finally, there are "medical grade" power supplies, which have safety features to prevent any mains overvoltages from reaching the subject.


    Again, even these type of supplies can be problematic for microvolt level ADC.

    Regards,

    William

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