Joystick Controls DC Motor

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Objective To control rotation of DC motor by Joystick. Principle By detecting Joystick analog values in X- and Y-axes, you can control the rotation and direction of the DC motor. Equipment Module Number Function Microduino-CoreUSB 1 Core board Microduino-Sensorhub 1 Sensor pinboard Microduino-Joystick 1 Joystick sensor Microduino-Robot 1 Robot control board Microduino-Motor 1 DC motor drive board Motor 1 File:Joystick motor.jpg 600px Hardware Buildup Setup 1：Stack CoreUSB, Robot, Motor and Sensorhub. File:CoreUSB Robot Sensorhub.jpg 600px Setup 2：Connect Joystick to Sensorhub to A0-A1 pin of Sensorhub and motor to OUTA-OUT1B pin of Stepper. File:Joystick Motor sensor.jpg 600px Software Debugging Define pin of Joystick and motor control. #define PI 3.1415926 #define JoystickX_PIN A1 //Joystick X-axis output #define JoystickY_PIN A0 //Joystick Y-axis output #define PIN_MOTORA 5 //Motor output #define PIN_MOTORB 6 // Motor output pin Calculate the angle where Joystick lies, according to which you can control rotation speed and decide rotation direction based on positive or negative value of the angle. valueX = (float)(analogRead(JoystickX_PIN)-512); valueY = (float)(analogRead(JoystickY_PIN)-512); valueL = sqrt(sq(valueX)+sq(valueY)); angle = asin(valueX/valueL)*180/PI; // Calculate the angle of Joystick by inverse trigonometric function motorSpeed = (int)(angle*255/180); // Calculate rotation speed according to the angle. if(motorSpeed > 0) // If the angle is positive, then the motor rotates clockwise. { digitalWrite(PIN_MOTORA, LOW); analogWrite(PIN_MOTORB, motorSpeed); } else if(motorSpeed < 0) //If the angle is negative, then the motor rotates anti-clockwise. { digitalWrite(PIN_MOTORB, LOW); analogWrite(PIN_MOTORA, abs(motorSpeed)); } else //If the angle is zero, then the motor stops rotation. { digitalWrite(PIN_MOTORA, LOW); digitalWrite(PIN_MOTORB, LOW); } delay(500); Program [MicroduinoJoystickMotor] Result Push Joystick to different angle, you can see the rotation speed and direction will change accordingly. Video