Hi, I’m trying to send 3 variable w1, w2 and phiV which are 3 parameter changing with the mouse tracking. I was trying to place those variable in 3 arrays and add it in a string but it didn’t work. I think there is one or several steps i have missed somewhere. Can I send a float array or just an…

@bking one way to do it: import processing.serial.*; Serial arduinoport; float w1, w2; float w12twist = 10.0; //int x=1; int Um=100; int Vm=100; float phiU=0; float phiV=HALF_PI/2; float X1t, X2t, X3t, X4t, X5t; float y=100.0; int[] values; String out; //char end = "z"; void setup() { size…

Hello M. Whahahahaha Thanks you to have cleaning up my program. I can see my 3 values with: String out = nf(values[0], 3)+"*"+nf(values[1], 4) +"*"+ nf(values[2], 4)+"*"; then you explain to me: " on the Arduino use Serial.readStringUntil(" * “); to read until this character to get the value in …

Hi bking, You can go see this thread, it should be quite similar to your problem: Multiple Values from processing to arduino through Serial Port

void receiveData() { if (Serial.available() > 0) { x = Serial.parseInt(); y = Serial.parseInt(); Serial.read(); Ok i will check it tomorrow but it seems to be too simple. I hope to have the solution of Whahahahaha Thanks you

Hi, Thanks for your help jb4x Yours two programs work but we must add this in Arduino boolean newData; What I like in your program that it seems to receive to separate variables, but it’s completely different than the method of M. Whahahahaha . (that why I said it seems to be too simple) So for…

Well yeah, it is definitly possible without any array. The code I gave you can be easilly be scaled for 3 or more variables. I’m atually using something really similar to send the color of each LEDs in this porject: A universal ambilight . And it is way more than 3 variables :slight_smile:

@bking the code you provided seems to be for processing as well. Arduino declares arrays differently: int omega[] = *whatever data*; also Arduino doesn’t know the functions split() and array.length (like you use omega.length >= 3) @jb4x 's code is actually better than what I had in mind, because …

actually if you want to learn more, take a look at this: https://forum.arduino.cc/index.php?topic=288234.0 it also goes over splitting data at the bottom of the first post. it actually says Serial.parseInt() and Serial.readStringUntil() are pretty bad ways to split Serial data. instead look mor…

It is not always a bad way to split data. The plus side of this is that it is super easy to implement. Then if you don’t need to do anything until you receive your data, the limitation explained in the link you gave is not a problem. It really depends on what you want to do.

Send 3 variable to Arduino?

Processing Electronics (Arduino, etc.)

jb4x November 12, 2018, 8:48pm 6

Not sure why you say it is too simple… I must have missed something.

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Send 3 variable to Arduino?

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