Hi Guys , I have a stepper Motor , 2 Max6675 (temperature Sensor ), potentiometer and one LCD , I want to control speed of stepper motor with potentiometer and at the same time LCD show the environment temperature , but is not working . can anyone help me please , thanks The MainBoard is Arduino Uno #include "max6675.h" // start of settings for LCD2004 with I2C #include #include // Set the LCD address to 0x3F for a 20 chars and 4 line display LiquidCrystal_I2C lcd(0x27, 20, 4); // end of settings for LCD2004 with I2C int soPin = 4;// SO=Serial Out int csPin = 5;// CS = chip select CS pin int sckPin = 6;// SCK = Serial Clock pin int so2Pin = 8; // SOL = Serial Out int cs2Pin = 9; // CS chip select DS pin int sck2Pin = 10; // SCK = Serial Clock pin //Start Set Stepper Motor #define DIR_PIN 2 //STEPPER PIN #define STEP_PIN 3 //STEPPER PIN #define potmeterPin A0 int p; float delay_time=18000; //End Set Stepper Motor MAX6675 thermocouple(sckPin, csPin, soPin); MAX6675 thermocouple2(sck2Pin, cs2Pin, so2Pin); void setup() { lcd.begin();// initializ the LCD2004 lcd.backlight();// turn the backlight ON for the LCD lcd.print("Test Project"); lcd.setCursor(0,1); lcd.print("L2 Test Project"); // Start Sepper Motor Set pinMode(DIR_PIN, OUTPUT); pinMode(STEP_PIN, OUTPUT); Serial.begin(9600 ); // End Sepper Motor Set void loop() { //Stepper Motor Set p = analogRead(potmeterPin); delay_time = map(p,0,1023,0,4000); motorStep(1); //End Stepper Motor Set Serial.print("C = "); Serial.println(thermocouple.readCelsius()); // Read From Another thermocpule Serial.print("C = "); Serial.println(thermocouple2.readCelsius()); lcd.clear();// clear previous values from screen lcd.setCursor(0,0);// set cursor at character 0, line 0 lcd.print("Test1"); lcd.setCursor(6,0);// set cursor at character 0, line 1 lcd.print(thermocouple.readCelsius()); lcd.setCursor(13,0);// set cursor at character 9, line 1 lcd.print((char)223); lcd.setCursor(14,0);// set cursor at character 9, line 1 lcd.print("C"); lcd.setCursor(0,1);// set cursor at character 0, line 0 lcd.print("Test2"); lcd.setCursor(6,1);// set cursor at character 0, line 1 lcd.print(thermocouple2.readCelsius()); lcd.setCursor(13,1);// set cursor at character 9, line 1 lcd.print((char)223); lcd.setCursor(14,1);// set cursor at character 9, line 1 lcd.print("C"); delay(1000); } void motorStep( int MAX){ for(int x = 0; x < MAX; x++) { digitalWrite(STEP_PIN,HIGH); delayMicroseconds(delay_time); digitalWrite(STEP_PIN,LOW); delayMicroseconds(delay_time); } }

Something like this? (Completely untested, because I don't have suitable Hardware for all components ): #include "max6675.h" #include // start of settings for LCD2004 with I2C #include #include // Set the LCD address to 0x3F for a 20 chars and 4 line display LiquidCrystal_I2C lcd(0x27, 20, 4); // end of settings for LCD2004 with I2C int soPin = 4;// SO=Serial Out int csPin = 5;// CS = chip select CS pin int sckPin = 6;// SCK = Serial Clock pin int so2Pin = 8; // SOL = Serial Out int cs2Pin = 9; // CS chip select DS pin int sck2Pin = 10; // SCK = Serial Clock pin //Start Set Stepper Motor #define DIR_PIN 2 //STEPPER PIN #define STEP_PIN 3 //STEPPER PIN MoToStepper myStepper( 200, STEPDIR ); // assuming 200 steps/rev #define potmeterPin A0 int p; uint16_t speed10 = 10000; //End Set Stepper Motor MAX6675 thermocouple(sckPin, csPin, soPin); MAX6675 thermocouple2(sck2Pin, cs2Pin, so2Pin); void setup() { lcd.begin();// initializ the LCD2004 lcd.backlight();// turn the backlight ON for the LCD lcd.print("Test Project"); lcd.setCursor(0, 1); lcd.print("L2 Test Project"); // Start Sepper Motor Set /*pinMode(DIR_PIN, OUTPUT); pinMode(STEP_PIN, OUTPUT);*/ myStepper.attach( STEP_PIN, DIR_PIN ); // initialize the stepper Serial.begin(9600 ); // End Sepper Motor Set } void loop() { //Stepper Motor Set p = analogRead(potmeterPin); uint16_t stepSpeed = map(p, 0, 1023, 100, 25000); myStepper.setSpeedSteps( stepSpeed ); myStepper.rotate(1); // rotate infinitely //End Stepper Motor Set Serial.print("C = "); Serial.println(thermocouple.readCelsius()); // Read From Another thermocpule Serial.print("C = "); Serial.println(thermocouple2.readCelsius()); lcd.clear();// clear previous values from screen lcd.setCursor(0, 0); // set cursor at character 0, line 0 lcd.print("Test1"); lcd.setCursor(6, 0); // set cursor at character 0, line 1 lcd.print(thermocouple.readCelsius()); lcd.setCursor(13, 0); // set cursor at character 9, line 1 lcd.print((char)223); lcd.setCursor(14, 0); // set cursor at character 9, line 1 lcd.print("C"); lcd.setCursor(0, 1); // set cursor at character 0, line 0 lcd.print("Test2"); lcd.setCursor(6, 1); // set cursor at character 0, line 1 lcd.print(thermocouple2.readCelsius()); lcd.setCursor(13, 1); // set cursor at character 9, line 1 lcd.print((char)223); lcd.setCursor(14, 1); // set cursor at character 9, line 1 lcd.print("C"); delay(1000); }

[image] mehmetb79: is not working What, exactly, is "not working" ? Have you successfully got all the elements working independently?

Thanks for Reply . If i disable the all line for LCD print the motor is working just fine , but when i want to use print on LCD the stepper motor not working just making some noise . in below condition motor working perfect //lcd.clear();// clear previous values from screen // lcd.setCursor(0,0);// set cursor at character 0, line 0 // lcd.print("Test1"); // lcd.setCursor(6,0);// set cursor at character 0, line 1 // lcd.print(thermocouple.readCelsius()); // lcd.setCursor(13,0);// set cursor at character 9, line 1 // lcd.print((char)223); // lcd.setCursor(14,0);// set cursor at character 9, line 1 // lcd.print("C"); // lcd.setCursor(0,1);// set cursor at character 0, line 0 // lcd.print("Test2"); // lcd.setCursor(6,1);// set cursor at character 0, line 1 // lcd.print(thermocouple2.readCelsius()); // lcd.setCursor(13,1);// set cursor at character 9, line 1 // lcd.print((char)223); // lcd.setCursor(14,1);// set cursor at character 9, line 1 // lcd.print("C"); // delay(1000);

All Code separately working perfect LCD with Temperature sensor working just fine and stepper motor with potentiometer working prefect as well , but when i want to fix all code together stepper motor not working and just make some noise .

The problem is, that your code is blocking. That many Lcd commands take a lot of time, and at the you even hava a delay of 1sec. During this time the processor does nothing - and does not create any step pulses during this time. That's why your stepper is not moving. You can try my MobaTools library to drive the stepper. The library creates the necessary steps in the background via timer interrupts. So the pulses are even created during Lcd commands and delay(). You can install the library via the library manager.

Thanks for reply . Can you write some code as well to help me because i think i should change something if i use your library thanks because i am so new in Arduino.

everything just work fine now , only one question i change speed of motor but right now the problem is the motor can not move fast the moving normal but not fast , any solution ?

[image] mehmetb79: the motor can not move fast How fast do you want it to move? The max. speed of MoToStepper with an UNO Rev3 is 2500 steps/sec. It can drive up to 6 steppers with that speed. If you only want to drive one stepper you can tune a little bit by changing a #define in MobaTools.h: #elif defined ARDUINO_ARCH_AVR //////////////////////////////////////////////////////// //#define NO_TIMER3 // never use Timer 3 #define CYCLETIME 200 // Min. irq-periode in us ( default is 200 ), chnage the value of CYCLETIME to 100: #define CYCLETIME 100 // Min. irq-periode in us ( default is 200 ), Than the max steprate is 5000 steps/sec: uint16_t stepSpeed = map(p, 0, 1023, 100, 50000); Faster is not possible on Arduino UNO Rev3

Stepper Motor / Max6675 and potmeter work Together Problem

Projects Programming

MicroBahner July 27, 2023, 7:33am 12

If you need faster speed but no positioning, this maybe a solution for you.

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Stepper Motor / Max6675 and potmeter work Together Problem

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