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Im trying to change the brightness of a LED. The brightness is controlled by a slider on my iPhone that communicates with Processing though OpenOSC. The slider sends values between 0 and 255. My idea is that OpenOSC communicates with Processing. Processing then communicates with Arduino though serial communication.
I managed to establish the connection between the iPhone and Processing. I also managed to make an Arduino code that works when i manually type the serial input. For some reason the whole thing doesn't work. I guess the problem is the serial communication between Processing and the Arduino.