LABVIEW FOR LEGO MINDSTORMS

[Noro]

Hallo I need help. Pls help me with control motors of NXT Robots with NXT Buttons. I need change power of motors with NXT Buttons. How I realize this function??

Thank you so much for your answer!

- In attachment is same program but in NXT-G

[HollyBerry]

Are you looking to do this in LabVIEW with the NXT module? If so, there is a VI called Read Brick Buttons found under NXT Robotics>>NXT I/O>>Complete>>Sensors. You can use this VI to poll the values of the buttons on the brick. 

Then, you can use a case structure to change the motor power value when the button is pressed and connect that to the Motor VI.

I've attached a VI with this basic implementation. Please let me know if this is what you are talking about.

[Noro]

Yes, it is one of solve the problem. But when I need write value of power in the variable and then read this variable from another part of VI. How to it?

Thank you

[HollyBerry · Accepted solution]

The prefered method is always to directly connect the wire to wherever else you may need to use it. However, if it is within a different loop, you could write it to a shared variable and read it in from the second loop. 

http://www.ni.com/white-paper/4679/en/

[Noro]

Thank you so much, for your answer 🙂