i wanted to do something simple. when an terminal command line is executed, the arduino should blink for 3 seconds.
the command line i use is this http://todbot.com/blog/2006/12/06/arduino-serial-c-code-to-talk-to-arduino/
the arduino script is quite simple, as soon as a serial comes in, it starts blinking for 3 seconds.
when i test it with the serialmonitor from the arduino enviroment it works exactly as it should.
but when i tried it with the command line tool it does only work, when the "serial monitor" is activated in arduino application. as soon as i turn of the serial monitor in the arduino application, i cant send commands anymore.
the LED blinks very short just once, but thats it.