求助树莓派GPIO用作电源输入.

bianbian · 发表于 2012-12-20 13:58:44

P1-02, P1-04, 这两个GPIO接口可以用作电源输入吗?

archang · 发表于 2012-12-20 19:55:30

可以，用5v输入。
但是不建议，因为从这里输入跳过了保护电路。
除非你自己再加层保护，否则容易把板子烧了。

archang · 发表于 2012-12-20 19:57:13

“As the 5V rail is brought out in the GPIO pins, you can power the Rpi from there too. You should mind however, that those are behind the power protection circuitry, so you should provide your own.”

http://elinux.org/RPi_Hardware#Power

自由飞翔 · 发表于 2012-12-20 20:36:56

archang 发表于 2012-12-20 19:57
“As the 5V rail is brought out in the GPIO pins, you can power the Rpi from there too. You should m ...

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bianbian · 发表于 2012-12-21 13:23:52

archang 发表于 2012-12-20 19:57
“As the 5V rail is brought out in the GPIO pins, you can power the Rpi from there too. You should m ...

这么说从USB供电的时候P1-02, P1-04就是电源输出.
但是P1-02, P1-04也可以用作电源输入.
即是IN又是OUT挺有意思...

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