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by realworldnumbers
Fri Dec 13, 2013 7:56 pm
Forum: Advanced users
Topic: Running Raspberry on 3.3 V
Replies: 33
Views: 22455

Re: Running Raspberry on 3.3 V

DC to DC "convertor" or "Voltage Regulator" has it's drawbacks. I'd recommend using AA (not AAAs) and even then, consider going direct without "power regulation". I did an experiment. I have succesfully powered my Pi and done a test on how long it can survive using only 4AA batteries :D http://realw...
by realworldnumbers
Fri Dec 13, 2013 7:52 pm
Forum: General discussion
Topic: Cheap battery at B&M
Replies: 8
Views: 2298

Re: Cheap battery at B&M

I have succesfully powered my Pi and done a test on how long it can survive using only 4AA batteries :D
http://realworldnumbers.com/how-to-test ... batteries/. I got about 8.5 hours and there was no damage when pushing 6.52Volts until fully drained.
by realworldnumbers
Fri Dec 13, 2013 7:51 pm
Forum: Off topic discussion
Topic: How to measure amps of a solar panel
Replies: 19
Views: 15244

Re: How to measure amps of a solar panel

I have succesfully powered my Pi and done a test on how long it can survive using only 4AA batteries :D
http://realworldnumbers.com/how-to-test ... batteries/. I got about 8.5 hours and there was no damage when pushing 6.52Volts until fully drained.
by realworldnumbers
Fri Dec 13, 2013 7:50 pm
Forum: General discussion
Topic: UBEC: What is what?
Replies: 8
Views: 2217

Re: UBEC: What is what?

I have succesfully powered my Pi and done a test on how long it can survive using only 4AA batteries :D
http://realworldnumbers.com/how-to-test ... batteries/. I got about 8.5 hours and there was no damage when pushing 6.52Volts until fully drained.
by realworldnumbers
Fri Dec 06, 2013 12:59 pm
Forum: Beginners
Topic: Battery power / USB power same time
Replies: 8
Views: 1353

Re: Battery power / USB power same time

I have managed to power a Pi using 4 AA batteries directly. It may not be supported, but I also measure a very high 6.52 volts on the input (fresh batteries) and got as low as 4.6V before I pulled the plug on the experiment. I'll be playing with more battery types soon and adjusting my experiement t...

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