hi everyone,
i have a track ball that puts out a square wave form. when the track ball stops moving it can stop with an output that is constantly high or constantly low.
what i need to do is monitor the output, and as soon as it changes state i want to pulse a transistor.
i am sure this should be really easy, just something that ignores if the output it high or low, but as soon as it changes from one to the other it sends a short, high pulse.
but i cannot think of what i could use to do this.
can anyone help me out? thanks
i have a track ball that puts out a square wave form. when the track ball stops moving it can stop with an output that is constantly high or constantly low.
what i need to do is monitor the output, and as soon as it changes state i want to pulse a transistor.
i am sure this should be really easy, just something that ignores if the output it high or low, but as soon as it changes from one to the other it sends a short, high pulse.
but i cannot think of what i could use to do this.
can anyone help me out? thanks