LED step function

[Arc7]

Hello, I'm new to VI. I'm trying to graph the blinking of an LED. For example, when the LED is on it'll have a max amplitude ( 1 for simplicity), when off, it'll go back to zero.The user is able to control the blink rate. I'm having trouble making the connection from controlling the LED to visualizing it on a graph.

[altenbach]

boolean to 0,1 and wire the output to a chart indicator.

[Arc7]

Well I got something using that, but the graph is displaying incredibly fast. I cannot get a smooth graph.

[crossrulz]

What value are you using for the loop's wait?  You probably want something in the 100 to 500ms range.

[BowenM · Accepted solution]

With that code you will only get 1 data point per cycle.  You likely want to have it display some "time" on the graph so it looks like a square signal instead of a Dirac delta function.

Look into the Elapsed Time Express VI.  Then you can set your loop delay to something constant (1ms or so), wire your knob into the target time, and only toggle your Boolean when it sees time has elapsed.

Edit:  Something like this

[Minions]

You can use two separate loops.  One to display the waveform (consistent time-base/update) that operates with the lowest wait time desired and the other for the knob selector that controls the added delay for the frequency of change.  The display should look like a slinky oscillating when you move the knob up then down again.