i started today using arduino with a very easy program and it doesnt work, it tell me that (arduino UNO r3)Arduino:1.6.4 (Windows 8.1), Placa:"Arduino Uno"
Sketch uses 2.180 bytes (6%) of program storage space. Maximum is 32.256 bytes.
Global variables use 184 bytes (8%) of dynamic memory, leaving 1.864 bytes for local variables. Maximum is 2.048 bytes.
avrdude: ser_open(): can't open device "\.\COM1": El sistema no puede encontrar el archivo especificado.
Which port have you got selected in the IDE ?
Does COM1 disappear from the list in the IDE when the Arduino is unplugged ?
Is the Arduino plugged into COM1 ?
did you remember to select the correct board first. under tools select the uno then see if the port changes from grey to black. If the port is not black after a few seconds unplug the usb cable and try a different usb port on your computer. Once port shows black click on it and select the uno which it will show connected.
when i disconect arduino uno from the computer and i try to verify the examples that cames with the IDE it send me the same error (whit arduino disconected) the error says that
global variales use 9 bytes (0%) of dinamic memory, leaving 2039 bytes of local variables maximun is 2048 bytes