How to dim the Boolean LED

[askjdhvl]

Hi! I am going to create a simulator of a lighting system which include dimming function.

How can I make the Boolean LED ramp on and ramp off in percentage(%) or in logic level (0-255)?

What should I do???

[chilly_charly]

You just have to play with the Color property. The example attached is just a quick start : the color varies from black to pure green. You can refine the variation to get it running from dark to bright green, to mimick reality more closely.

CC

[altenbach]

If the indicator is just a "light" it does not need to be a boolean LED with all that true/false logic. I suggest a simple color box customized to look like an LED as indicator.
The attached VI (LabVIEW 7.1) shows one possibility where you can select the color and brightness at will.

Message Edited by altenbach on 03-09-2005 12:25 AM

[unclebump]

Can you save this dimmer vi in v7.0??

[altenbach]

I cannot convert it exactly, because it uses a radio button control (not available under LabVIEW 7.0). 😞

However, LabVIEW 7.1 does a good job downconverting and it automatically replaced the radio control with an enum. Pretty cool!
See attached 7.0 version).

[programmindragon]

I am trying to recreate another version of this dimmer.vi but I cannot recreate the led. It gives me a box but I cannot change it to a round led.

[altenbach]

See my answer in this earlier thread. You need to customize the color box to look like an LED using the control editor.

[programmindragon]

Thank you!

[askjdhvl]

Thank you all of the replys!
I will try your solutions.

[Vaibhav]

Hi altenbach,

I was looking at your different examples to convert a color box into an LED to show multiple states. In the Dimmer.vi above, couldn't understand the "AND" condition. What does that mean for numeric value? Or is that a color box requirement? Also, how did you calculate those values of Brightness? The first element is 0, and then the three elements are same. I understand you are typecasting into U32, but why that 0 with 3 same values?

Just curious to understand the logic.

Thanks ahead!