Send time based 5v output as trigger


I want to use the adruino uno to output - based on a time interval (like every 5 sec) - to send a short pulse (like 0,5 sec) as a output to a pin. And if possible count the outputs/trigger on a display. And to check if the output is coming a light needs to light-up, as a visual conformation.

Is there some example project whom somebody can point me to? Or help me out in some direction the get the code running.


This sounds very simple. For visual confirmation, just add an led and series resistor to the output. The most complex part, for a beginner, will be the display. Do you have anything specific in mind? LED? LCD?

How precise must the pulses and timing be?

What maximum count do you need to display, how many digits?