Hi guys,
i would like a little help from you, if possibile.
in need to know if it's possible to use arduino pin to make shor circuit like this way
open and close a circuit betwenn pin 2 and pin 3 for example and put on them maximum 5 volt
is it possible?
Yes, you can set two pins as OUTPUTs and then set one HIGH and the other LOW, and +5VDC will flow from one into the other. You will want to limit the current in some way (through a resistor or other component) so that the Arduino is not damaged. You should not allow more than 20mA to flow into or out of an Arduino pin.
tylernt:
+5VDC will flow from one into the other.
.... except that volts don't flow 8).
Current does though:
20mA to flow into or out of
Hi,
open and close a circuit betwenn pin 2 and pin 3 for example and put on them maximum 5 volt
If you mean make pin2 and pin3 appear to be the terminals of a switch and pass current between them, NO you can't.
What you would do is make pin2 turn a relay ON and OFF via a transisor, and use the switch contacts on the relay.
Tom.... 
TomGeorge:
Hi,open and close a circuit betwenn pin 2 and pin 3 for example and put on them maximum 5 volt
If you mean make pin2 and pin3 appear to be the terminals of a switch and pass current between them, NO you can't.
What you would do is make pin2 turn a relay ON and OFF via a transisor, and use the switch contacts on the relay.
Tom....
thx Tom it was exactly what i wanted but now i found an other way
thank you for all your support