Go Down

Topic: arduino pro mini and openlog power help.. (Read 1 time) previous topic - next topic

mayoman

Feb 24, 2011, 10:39 pm Last Edit: Feb 24, 2011, 10:45 pm by mayoman Reason: 1
I have the openlog http://www.sparkfun.com/products/9530 connected to the arduino pro mini and it works perfectly when powered by the laptop through the FTDI basic. However, when I have them powered by 3.3V battery no data is logged in the openlog. Anyone know what the problem is?

PaulS

http://arduino.cc/en/Main/ArduinoBoardProMini
Quote
Input Voltage   3.35 -12 V (3.3V model) or 5 - 12 V (5V model)

You didn't say which model you have, but a 3.3V battery does not seem to be enough when the minimum is 3,35V.
The art of getting good answers lies in asking good questions.

mayoman

Its the 3.3V model. If I was to use up to 12V would I need to use a voltage regulator? Would I risk burning out the components?

PaulS

You can supply up to 12 volts to the on-board voltage regulator. It will get warm at 12 volts. If you were to power the Arduino with 2 of your 3,3V batteries, that would be better.
The art of getting good answers lies in asking good questions.

mayoman

So if I was to supply up to 12V to the raw on the arduino would that work? would using a lithium battery supply more current?

PaulS

Quote
So if I was to supply up to 12V to the raw on the arduino would that work?

Yes.

Quote
would using a lithium battery supply more current?

Than what? A potato?
The art of getting good answers lies in asking good questions.

mayoman


I have them powered by 3.3V battery


would a lithium battery supply more than a 3.3V battery?

Go Up