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Results tagged with Search options user 70

Use this tag to refer to the volume of electricity traveling through any given wire at any given time. It is measured in amps.

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, the total current through the supply or ground rails (i.e. the total of all current OP wants the GPIO pins to sink, or source) is rated to a maximum of 150 200 mA. Realistically, the current graphs … in the atMEGA328 datasheet do not even go all the way to 40 mA, hence it is safest to restrict the current to perhaps 20 mA total per GPIO. In other words, whether a GPIO is used as source or sink …
answered Feb 12 '14 by Anindo Ghosh