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Re^12: Controlling USB on Raspberry Piby stevieb (Canon) |
| on Dec 13, 2020 at 16:51 UTC ( [id://11125120]=note: print w/replies, xml ) | Need Help?? |
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"The relay is designed such that it switches ON when the GPIO pin is taken low." For your information, when a device is on/enabled when the GPIO goes LOW, that's called "Active Low", so the relay is known to be an "active low relay". "Active High" is exactly the opposite.
In Section
Seekers of Perl Wisdom
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