Arduino Notes

Some notes that could be useful when dealing with Arduino boards.

Limits

• What is the voltage range when powered from the jack?
  • 6..20V - if supplied with less than 7V the 5v might become lower thus board becomes unstable.
• What aperage can the internal power supply give?
  • When powered from USB it is 500mA, when it is using power supply it can present max 1A
• What is the power consumption of an Arduino being powered from a 9V battery?
  • The regulator that is on the Arduino UNO board is not a good fit to be powered from a 9v Power supply. See here: Do not power your Arduino from 9V battery