I'm doing this project for school where I'm using a Kinect, Processing, and an Arduino. Currently I'm having trouble sending the data from Processing to the Arduino IDE. I'm trying to control just one LED right now but eventually I will be controlling 12 LED's. When I try to run the program the LED …

} } } } That looks pretty stupid. Can't you be bothered to indent properly? Or to use Tools + Auto Format? myPort.write("A" + arduinoValuea); Addition?

Sorry about the indents I will try to fix that. With the other section I was trying to attach the "A" to the value to act as an identifier since I plan to send more values in the future. So if the value is 100 it would send A100 to the Arduino IDE.

So if the value is 100 it would send A100 to the Arduino IDE. myPort.write("A"); myPort.write(arduinoValuea); Certainly would, and takes no longer to execute.

Thank you for the reply. I added what you suggested but it did not fix the problem. The LED still turns on but does not change it's brightness based upon the value I send; it just stays at 255. Are there any other areas you might see where I made an error that would affect sending the value?

I'd suggest echoing the value that the Arduino receives. Perhaps it isn't what you think it is. Have Processing read and print(ln)() the data from the serial port.

Thanks, I'll give it a try and post the results a little later.

When I echo the value back to Processing the result is -1. I'm not sure what that means.

Controling LED with Processing

Projects Interfacing w/ Software on the Computer

system November 26, 2014, 7:33pm 2

Which Arduino are you using? On the UNO and other 328 based Arduinos, pin 13 is not a PWM pin. You can only vary the brightness of LEDs using PWM pins.

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Controling LED with Processing

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