Keyboard Controls

[makewayforkhairil]

Hi. I just started using LabVIEW and I am currently using NI LabVIEW 2013 to control a quadcopter by using keyboard. I can only use certain buttons on my keyboard to toggle the buttons. Is there a way for me to for example use letters "w/a/s/d" to control my buttons?

Thank you 🙂

[RavensFan]

Use an event structure to detect the Key down and key up events.  Look at what key is pressed by the event data node inside the event case.

[makewayforkhairil]

Sorry I forgot to attach what I've done

[udka]

-Also you can try the example provided along with labview for keyboard events.
Go to Help>>Find Examples>>Search for Keyboard.
-Can you post your vi in lv12 (File>>Save for Previous version) because i cannot open your vi.

[makewayforkhairil]

I found the example but I think it wasn't useful for me.. I've attached my vi for lv12. 

Thanks! XD

[Ralok · Accepted solution]

Example for getting the keys pressed with events.

[KoenR94]

Use Raloks event structure, then just add a case structure for the different keys.

Remember chars are: w,s,d,f,g,h,j,k,l...............

vkeys are: Up, Down, Ctrl, Return...............

[udka]

Please keep timeout for event structure, otherwise when no key is pressed and you try to stop the vi, it will not stop.

[RavensFan]

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@udka wrote:
Please keep timeout for event structure, otherwise when no key is pressed and you try to stop the vi, it will not stop.

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Ideally, the Stop button should have a value change event case in the structure to handle that.

[makewayforkhairil]

Hey I was wondering where can I get the circled symbol? XD

Thank you!