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Author Topic: Where does the program go?!  (Read 85 times)
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BrianOBrien
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« on: January 21, 2013, 03:09:33 pm »
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I want to download a program to the Arduino and then disconnect the USB cable.
I guess I need to supply it with power from the other power connector.  (Anybody got a pointer to the Power supply specs for the Mega 2560?)

My 'newbie' question is, does the program need to be re downloaded if the arduino is rebooted?
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Jack Christensen
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« Reply #1 on: January 21, 2013, 03:18:51 pm »
 Bigger Bigger Smaller Smaller Reset Reset
Input voltage specs are here: http://arduino.cc/en/Main/ArduinoBoardMega2560

The program is written to non-volatile flash memory, it persists even if power is removed.
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BrianOBrien
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« Reply #2 on: January 21, 2013, 03:41:18 pm »
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This otta do'er!
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wildbill
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« Reply #3 on: January 21, 2013, 03:57:40 pm »
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Alternatively, if there is power where you need the arduino, just find a wallwart that has a USB socket on it - e.g. the chargers for iPhone or Kindle etc.
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PeterH
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« Reply #4 on: January 21, 2013, 04:06:52 pm »
 Bigger Bigger Smaller Smaller Reset Reset
Quote from: BrianOBrien on January 21, 2013, 03:41:18 pm
This otta do'er!

It would work, but those little PP3 batteries have very low charge and current capacity and are relatively expensive for what you get. Additionally, the voltage is higher than optimal for an Arduino so much of that precious energy is simply converted to heat in the voltage regulator. A pack of AAA or AA cells gives significantly more current and charge capacity.
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