Communicating between two nxt bricks

[Chris Connor]

Hello,

I am making a joystick using RCX rotation sensors and an NXT brick. The idea would be that the program would read the values from the rotation sensors and then send simple commands to a slave NXT brick which would be a simple wheeled robot. The commands would be very simple, as in just simple move forward, backward, turn left etc… I’m just curious, is it possible to communicate between bricks with the monobrick library? It doesn’t have to be very sophisticated, just like if certain conditions were met it would tell the other brick to turn on a motor or something like that. Any insight would be appreciated.

Thanks!

[Anders Søborg]

Hi Chris

Why do you want to use a PC as a “bridge” whenyou can make the NXT send a message to another NXT using Bluetooth?

Anders

[Chris Connor]

Oh is it easier to do it that way? How would I do that? As in if I were to move the joystick forward, it would register the movement with the rotation sensor and then how would I get it to send a command to the other brick?

[Chris Connor]

Actually I was just thinking would it be possible to initialize two NXT bricks in the same code? That way it would be using the PC as a bridge. As in initializing two bricks like this

Brick1 = new Brick<RCXRotationSensor, Sonar, RCXRotationSensor, Sensor>(“COM5”);
Brick2 = new Brick<RCXRotationSensor, Sonar, RCXRotationSensor, Sensor>(“COM6”);

Using two different com ports it should in theory work? Not sure if you have this implemented or not but it seems like it should work.

[Anders Søborg]

Hi Chris

Using two different com ports it should in theory work?

That should work – but why not communicate directly instead of using a PC as a bridge?

Anders

• This reply was modified 10 years ago by Anders Søborg.

[Chris Connor]

Hmm well I’m not sure how to communicate directly, but I managed to use the PC as a bridge and it works just fine for my purpose. Thanks for the help!

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