Design wave form

I really don't know where to start or ho to start searching, so maybe some one in the audience might know

I'm looking for a software that I can use in order to design wave such as

The waves are not periodical, and i would like to set things like pulse with x width, and a gap with Y lenght.

Any ideas? I'm getting tired of paint...

Are you doing a lot of these then? Can't be hard to make something in VB for a rapid development.

That waveform is simple what the PWM output gives you. So just and ananogWrite() function will set the duty cycle. You can change the PWM frequency as well see:- http://www.arduino.cc/playground/Code/PwmFrequency

Can't be hard to make something in VB for a rapid development

Problem with that is you can't get regular signals from a PC by bit banging due to the interrupts going off.

I guess I didn't explain myself.

I just want to draw them. Make a picture so I can put them on a report and blog.

Anyway, I found a solution that is what I was looking for: http://www.timingtool.com/

With it, I can create the waves to my specifications. The only problem is the steep price.