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Is the 3.3v pin (GPIO pin 17) controllable?
#1
I connected fan on pin 17 and ground. If it possible to turn power on/off on this pin so I can controlled the fan?

Thanks.
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#2
No, the pin 17 is power. It can't be switched off programmatically. To control the fan it must be connected to an gpio pin BUT only over a transistor. Because current consumption of a fan can destroy the pin if it is connected directly. I havn't found information of maximum current of the gpio pins, but I assume that it is as on other soc about 2...3mA.
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#3
(11-12-2017, 10:23 AM)lobo Wrote: No, the pin 17 is power. It can't be switched off programmatically. To control the fan it must be connected to an gpio pin BUT only over a transistor. Because current consumption of a fan can destroy the pin if it is connected directly. I havn't found information of maximum current of the gpio pins, but I assume that it is as on other soc about 2...3mA.

I see. Thanks.
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