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by cjketle
Sun May 12, 2019 3:46 pm
Forum: Troubleshooting
Topic: Rasberry Pi Don't Starts After Abrupt Shutdown due to short between 3V3 and 5V
Replies: 9
Views: 307

Re: Rasberry Pi Don't Starts After Abrupt Shutdown due to short between 3V3 and 5V

If you have any of those two pin jumpers that are/were often used to configure devices they can usefully be used to reduce the risk of this sort of mishap when probing around. If you always keep one covering the two 5v pins where they would be otherwise exposed then it is more difficult to contact t...
by cjketle
Mon Jan 14, 2019 7:54 pm
Forum: Advanced users
Topic: Raspberry PI cold boot attack protected / Zero out RAM after boot?
Replies: 71
Views: 4269

Re: Raspberry PI cold boot attack protected / Zero out RAM after boot?

For interest, I’ve carried out a few rough and ready experimental measurements on an early Pi1B to get an idea of the scale of the problem. This is done by writing a pattern into a fixed area of memory, powering off and on and reading the memory back to get an idea of how much has changed. These res...

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