How to add LED in GUI?

Question

Hemanth 2011-12-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/23371-how-to-add-led-in-gui

评论： Huy Le Van 2021-1-30

Hi I am developing a gui for which when the input is provided by user I should be able to show him a green LED glowing that the signal is received, if not a red LED glowing. But i am not able to find an LED. Can someone please let me know how to add an LED in GUI.

regards T. Hemanth

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2011-12-8

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/23371-how-to-add-led-in-gui#answer_30674

There are no LED in GUIs. LEDs are hardware.

There are a lot of different ways to control external hardware. Most of those ways cannot meet the programmer's original expectations of what they would like to do.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Walter Roberson 2011-12-9

Graphics are not able to "glow". You will need to use hardware.

Relevant material:

http://www.mathworks.com/help/toolbox/gauges/numericdisplays.html

http://www.mathworks.com/matlabcentral/linkexchange/links/2992-output-webcam-to-led-using-matlab

http://www.mathworks.com/matlabcentral/answers/3874-gui-interface-with-arduino

http://www.mathworks.com/matlabcentral/answers/22387-leds-and-speakers-controlled-with-matlab

请先登录，再进行评论。

Answer 2

Daniel Shub 2011-12-8

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/23371-how-to-add-led-in-gui#answer_30681

Are you okay with square "LEDs" that don't flicker at all and are really uniform? You can make a text box and set its background color to be green/red and the string to be blank. If you want circles you could use an image. Beyond that you might need to video an actual LED and play the video ...

4 个评论
显示 2更早的评论隐藏 2更早的评论

Hemanth 2011-12-9

Presently i did use squares with G&R colours as background but when the signal is provided it should indicate that by glowing, which i am not able to do.

Daniel Shub 2011-12-9

You really should add this information to your question.

请先登录，再进行评论。

Answer 3

Daniel Shub 2011-12-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/23371-how-to-add-led-in-gui#answer_30830

It seems the key part of the question (based on a comment to my previous answer) is to get the "LED", which I think is being implemented as a uicontrol textbox, to flicker or glow. There is no good solution.

If two states are good enough (LED on and LED off), you could define two different colors of "green" and two different colors of "red" and switch between them.

If you want it to be more dynamic you could use a timer and change the color dynamically.

The best is probably to video a real LED and play that back as a movie.