Arduino and ESP32 code

Arduino code for controlling a robotic arm

//YouTube channel -> Robot UNO
//Project -> Robotic arm version 1
#include <Servo.h>
#include <Stepper.h>
Servo gripperServo; //Gripper servo
Servo middleServo; //Middle servo
Servo lowerServo; //Lower servo
Stepper motor(2048, 4, 6, 5, 7);
void setup() {
  gripperServo.attach(11);
  middleServo.attach(10);
  lowerServo.attach(9);
  motor.setSpeed(5);
}
void loop() {
  //Reset
  lowerServo.write(0);
  middleServo.write(0);
  gripperServo.write(0);
  //motor.step(512);
  delay(3000);
  //PICK UP THE OBJECT
  for(int i=0; i<=45; i++){
    gripperServo.write(i);
    delay(25);
  }
  delay(1000); 
  for(int i=0; i<=90; i++){
    middleServo.write(i);
    delay(25);
  }
  delay(1000);  
  for (int i=0; i<=90; i++){
    lowerServo.write(i);
    delay(25);
  }
  delay(1000);
  for(int i=45; i>=0; i--){
    gripperServo.write(i);
    delay(25);
  }
  delay(1000);
   for (int i = 90; i>=0; i--){
    lowerServo.write(i);
    delay(25);
  }
  delay(1000);
  for (int i = 90; i>=0; i--){
    middleServo.write(i);
    delay(25);
  }
  delay(1000);
  //ROTATE WITH THE OBJECT
  motor.step(512);
  delay(1000);
  //DROP THE OBJECT
  for(int i=0; i<=90; i++){
    middleServo.write(i);
    delay(25);
  }
  delay(1000);
  for (int i=0; i<=90; i++){
    lowerServo.write(i);
    delay(25);
  }
  delay(1000);  
  for(int i=0; i<=45; i++){
    gripperServo.write(i);
    delay(25);
  }
  delay(1000);
  //RETURN TO THE INITIAL POSITION
  lowerServo.write(0);
  middleServo.write(0);
  motor.step(-512);
  delay(3000);
}

Arduino code for a crane

//YouTube channel -> RobotUNO
//Project: Crane with servomotors
#include <Servo.h>
//Servo definitions
Servo servo1;
Servo servo2;
int axis1=90;
int axis2=90;
void setup(){  
  servo1.attach(7);
  servo2.attach(6);
  servo1.write(90);
  servo2.write(90);
}
void loop(){
  //SERVO 1
  if (analogRead(0)<200 && axis1<180){
    axis1++;
    servo1.write(axis1);
  }
  if (analogRead(0)>700 && axis1>0){
    axis1--;
    servo1.write(axis1);
  }
  //SERVO 2
  if (analogRead(1)<200 && axis2<180){
    axis2++;
    servo2.write(axis2);
  }
  if (analogRead(1)>700 && axis2>0){
    axis2--;
    servo2.write(axis2);
  }
  delay(15);
}

Arduino code for Snake on an LCD screen

//Channel -> RobotUNO
//Mini-game on an LCD screen
#include <LiquidCrystal.h>//screen library 
LiquidCrystal lcd(12, 11, 5, 4, 3, 2); //Set the LCD output pins
byte char1[8] = { B01110, B00100, B11111, B01110, B01010, B01010, B11111, B01010 };
byte char2[8] = { B01110, B00100, B11111, B01110, B11011, B00000, B11111, B11111 };
byte char6[8] = { B01110, B10101, B11111, B01110, B01010, B01010, B11111, B01010 };
byte char0[8] = { B00000, B00000, B00000, B00000, B00000, B00000, B00000, B00000 };
byte char3[8] = { B00000, B00000, B00000, B11111, B11111, B11111, B11111, B11111 };
byte char4[8] = { B00000, B11111, B11111, B11111, B11111, B11111, B11111, B11111 };
byte char5[8] = { B01110, B11111, B11111, B11111, B11111, B11111, B11111, B11111 };
int x=15;
int y=1;
int obstacles=0;
int speed=300;
int score=0;
int GameOver=3;
void setup(){
  lcd.begin(16, 2);
  lcd.createChar(1, char1);
  lcd.createChar(2, char2);
  lcd.createChar(3, char3);
  lcd.createChar(4, char4);
  lcd.createChar(5, char5);
  lcd.createChar(0, char0);
  lcd.createChar(6, char6);
}
void loop(){
  lcd.setCursor(7, 0); //Channel name position 
  lcd.print("RobotUNO");
  lcd.setCursor(0, 0); //Print the number 0 
  lcd.print(obstacles);
  lcd.setCursor(x,y);
  lcd.write(byte(3));
  delay(speed);
  lcd.setCursor(x,y);
  lcd.write(byte(4));
  delay(speed);
  lcd.setCursor(x,y);
  lcd.write(byte(5));
  delay(speed);
  lcd.clear();
  lcd.setCursor(GameOver, 1); 
  lcd.setCursor(3, 1);  
  lcd.write(byte(1)); 
  if (digitalRead(7) == HIGH){ 
    lcd.setCursor(3, 1);
    lcd.write(byte(0));
    lcd.setCursor(3, 0);
    lcd.write(byte(2));
  }
     else if(3 == x){
      lcd.clear();
      lcd.setCursor(3, 0);
      lcd.print("Game Over");
      lcd.setCursor(7, 1);
      lcd.write(byte(6));
      delay(3000);
      score=obstacles;
      lcd.setCursor(3, 1);
      lcd.print("Score:");
      lcd.setCursor(12, 1);
      lcd.print(score);
      delay(6000);
      obstacles=0;
     }
   x=x-1;              
  if (x<=0) {  
     x=15;                        
  }
 speed = random(1,200);
if(GameOver == x){ 
  lcd.clear();
  obstacles++;
}
}

Arduino code for a temperature sensor

//YouTube channel -> RobotUNO
//Project 4

#include <LiquidCrystal.h>

int tempPin = 0;
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
void setup(){
  lcd.begin(16, 2);
}

void loop(){
  int tempReading = analogRead(tempPin);
  double tempK = log(10000.0 * ((1024.0 / tempReading - 1)));
  tempK = 1 / (0.001129148 + (0.000234125 + (0.0000000876741 * tempK * tempK )) * tempK );
  float tempC = tempK - 273.15;
  lcd.setCursor(0, 0);
  lcd.print("Temp         C  ");
  lcd.setCursor(6, 0);
  lcd.print(tempC);
  delay(500);
}