Servo Control

Objective The course will show you how to control the turning of a steering engine by using Processing. Equipment Microduino-Core Microduino-FT232R Other Hardware Equipment A USB cable A steering engine Schematic Program Referring to processingServoControl Debugging Step 1: Build the hardware environment according to the schematic, as follows: Step 2：Here the code needed: The code of the two ends (Processing and Microduino) Microduino: Using firmata StandardFirmata’s program since it achieves the method of how to control a steering engine Processing: //Define serial communication in “Setup” and set “pinMode” arduino = new Arduino(this, Arduino.list()[0], 57600); //your offset may vary arduino.pinMode(9, 5); //Read the value of the mouse on the x-coordinate to set the angle of the steering engine void draw() { // read mouseX coordinate int newPos = constrain(mouseX/2, 0, 180); // update bg & servo position if mouseX changed if (newPos != pos) { background(0); stroke(255); line(mouseX, 0, mouseX, 160); text (newPos, mouseX, 180); arduino.analogWrite(9, newPos); println (" newPos = " + newPos ); pos=newPos; //update servo position storage variable } } Step 3：Download the code and get it compiled successfully. Step 4：Move the mouse around to see how the steering changes after the system goes well. Result In Processing, an indicator will be displayed. Along with the change of the mouse on the x-coordinate, the steering engine will also rotate: Video