d1

Questions about the Really Bare Bones Board
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fierojo
Posts: 1
Joined: Sat Aug 20, 2011 10:31 am

d1

Post by fierojo » Sat Aug 20, 2011 10:35 am

What is the purpose of d1?

Thanks.

Fierojo

teedeeus
Posts: 7
Joined: Tue Jun 02, 2009 11:32 am

Re: d1

Post by teedeeus » Mon Aug 22, 2011 8:53 am

From the RBBB documentation:

In the RBBB the diode provides reverse polarity protection on the 5 volt power rail. Under normal circumstances the diode does nothing. If the power is connected with polarity reversed, the diode shorts out the power supply. This protects the Atmega 168 from exposure to the reverse polarity voltage which would damage it.

-teedeeus

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