Hi, I’m new to Arduino and Processing.py. I am using Processing and Arduino to complete my graduation project.(English is not my native language, sometimes I speak it’s very strange.) I want to implement the Serial library so that Processing can read different values of different sensors on arduino.I tried to create an ever-changing list of sensor values using split(). I tried to use split() to separate the incoming values, but I kept getting an error. And I don’t know how to use bufferUntil() properly. :sob: :sob: Here is my Arduino and Processing code.Can someone help me? void setup() { // put your setup code here, to run once: Serial.begin(9600); } void loop() { // put your main code here, to run repeatedly: int val0 = analogRead(A0); // int val1 = analogRead(A1); int val2 = analogRead(A2); int val3 = analogRead(A3); int val4 = analogRead(A4); int val5 = analogRead(A5); Serial.print(val0, DEC); Serial.print(','); Serial.print(val1, DEC); Serial.print(','); Serial.print(val2, DEC); Serial.print(','); Serial.print(val3, DEC); Serial.print(','); Serial.print(val4, DEC); Serial.print(','); Serial.print(val5, DEC); Serial.print('\n'); // Serial.println(); delay(1000); } add_library("serial") myPort = Serial(this,"COM3",9600) def setup(): size(200,200) myPort.bufferUntil('\n') def draw(): if myPort.available()>0: P_dates = myPort.readString() string01 = P_dates TRY = string01.split(",") C = list() for i in TRY: C.append(int(i)) println(C) delay(1000) def serialEvent(Serial): inString = p.readString() These are some of the mistakes I’ve encountered TypeError: bufferUntil(): 1st arg can't be coerced to int If I delete bufferUnitl () ValueError: invalid literal for int() with base 10: '77 51' When I changed the program, the output list became strange if myPort.available()>0: P_dates = myPort.readString() string01 = P_dates TRY = string01.split(",") C = list() for i in TRY: C.append((i)) println(TRY) I don’t understand why the output value is like this.The values on the serial monitor are correct. The console values are as follows [u'49', u'56', u'53', u'53', u'123', u'80\n'] [u'48', u'56', u'53', u'53', u'89', u'60\n'] [u'49', u'55', u'53', u'53', u'94', u'60\n'] [u'49', u'56', u'53', u'53', u'110', u'64\n'] [u'48', u'55', u'52', u'52', u'103', u'60\n'] [u'47', u'55', u'53', u'53', u'91', u'57\n']

Cheers @The-NUll ! I’m afraid I can’t test/explore your code right now, but I’ve been using Firmata to read the values from Arduino, maybe this project can be of use for you: lousa-magica/LousaMagica.pyde at master · villares/lousa-magica · GitHub lousa-magica/README-EN.md at master · villares/lousa-magica · GitHub (for context) Beware that on some platforms the Serial library is not working with Processing.py :frowning:

Thank you very much! You gave me a new idea to try! I hope it helps me. :smiling_face_with_three_hearts:

Hello, I am new to Python as well. I tried this and it worked: add_library("serial") myPort = Serial(this,"COM5",9600) def setup(): size(200,200) myPort.bufferUntil(0x0A) frameRate(10); def draw(): background(255, 0, 0); // I needed something here def serialEvent(Serial): inString = myPort.readString() println(inString) inString = trim(inString) arr = inString.split(",") for i in arr: print(i) [image] :)

[image] glv: myPort.bufferUntil(0x0A) You can replace literal 0x0A w/ constant ENTER: myPort.bufferUntil(ENTER) BtW, I recommend taking a look at my Java Mode sketch example too: [image] Using two different readStringUntil "characters" Electronics (Arduino, etc.) The solution I gave on that link expects the Arduino C code to send the multi-data as if they were a row of tab-separated values (TSV): face_with_monocle That is, each value is followed by a \t character; except last 1, which is followed by an \n instead: nerd_face Serial.print(temperature); Serial.write('\t'); Serial.print(masse); Serial.write('\t'); Serial.print(humidite); Serial.write('\t'); Serial.print(comptage); Serial.write('\t'); Serial.println(son); // implies '\n' At the Pro…

Just realized I’ve already had a Python Mode example for the Serial library, but for a single value: :snake: [image] Read Serial Value (From Arduino) Processing.py This is my lousy attempt to convert an old Java Mode sketch from the link below to Python Mode: snake Forum.Processing.org/two/discussion/16618/processing-with-arduino-void-serialevent#Item_5 """ * Efficient Serial Reading (v1.01) * GoToLoop (2018-Nov-22) * * Discourse.Processing.org/t/read-serial-value-from-arduino/5829/2 * * Forum.Processing.org/two/discussion/16618/ * processing-with-arduino-void-serialevent#Item_5 """ add_library('serial') PORT_INDEX, BAUDS = 0, 9600 myString =…

Thank you. I solve my problem, now it works well :smiley: :smiley:

[image] GoToLoop: You can replace literal 0x0A w/ constant ENTER : myPort.bufferUntil(ENTER) [image] GoToLoop: Just realized I’ve already had a Python Mode example for the Serial library I tried this and responded here: [image] Read Serial Value (From Arduino) Processing.py It does not work. This will work with Processing 3.5.4 Python mode: # Python Serial Reading # v1.0.0 # GLV 2022-06-11 add_library("serial") myPort = Serial(this, "COM2", 9600) inString = "" def setup(): size(400, 100) # This does not work: #myPort.bufferUntil(ENTER) # This works: myPort.bufferUntil(0x0A) textSize(24); textAlign(LEFT, CENTER); fill(0); noLoop() def draw(): background(255); # I needed something here text (inString, 5… :)

How to read the value of each sensor from the Arduino

Processing.py

GoToLoop May 17, 2022, 10:41pm 6

Just realized I’ve already had a Python Mode example for the Serial library, but for a single value:

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How to read the value of each sensor from the Arduino

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