Objectives
Make a wall-mounted dial to indicate today's weather conditions, your current location (à la Harry Potter), or power usage in your home. Or build brainwave-controlled wings. Or a robot arm to serve you Bellinis. The power is yours, with SERVOS!
- Components required
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Components Link Arduino x 1 Breadboardx 1 https://orezaar.com/search?q=breadboard&options%5Bprefix%5D=last Jumper wires x1 servos x 1 switch button 12mm x 1 - Code
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SweepCalibrated
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/* Sweep by BARRAGAN <http://barraganstudio.com> This example code is in the public domain. modified 8 Nov 2013 by Scott Fitzgerald http://www.arduino.cc/en/Tutorial/Sweep */ #include <Servo.h> Servo george; // create servo object to control a servo // twelve servo objects can be created on most boards int pos = 0; // variable to store the servo position int ledPin = 13; int mini = 15; // servo's minimum position int maxi = 160; // servo's maximum position void setup() { george.attach(9); // attaches the servo on pin 9 to the servo object } void loop() { for (pos = mini; pos <= maxi; pos += 1) { // goes from 0 degrees to 180 degrees // in steps of 1 degree george.write(pos); // tell servo to go to position in variable 'pos' delay(15); // waits 15ms for the servo to reach the position } for (pos = maxi; pos >= mini; pos -= 1) { // goes from 180 degrees to 0 degrees george.write(pos); // tell servo to go to position in variable 'pos' delay(15); // waits 15ms for the servo to reach the position } digitalWrite(ledPin, !digitalRead(ledPin)); }
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Dial Counter sketch
/* Sweep by BARRAGAN <http://barraganstudio.com> This example code is in the public domain. modified 8 Nov 2013 by Scott Fitzgerald http://www.arduino.cc/en/Tutorial/Sweep */
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#include <Servo.h> Servo myservo; // create servo object to control a servo // twelve servo objects can be created on most boards int pos = 10; // variable to store the servo position int pushButton = 2; int ledPin = 13; int clicks = 0; void setup() { Serial.begin(9600); myservo.attach(9); // attaches the servo on pin 9 to the servo object pinMode(pushButton, INPUT_PULLUP); digitalWrite(ledPin, LOW); } void loop() { int buttonState = digitalRead(pushButton); if (buttonState == 0 && pos <= 160) { clicks = clicks + 1; Serial.print("Clicks: "); Serial.println(clicks); pos = map(clicks, 0, 29, 15, 160); myservo.write(pos); // tell servo to go to position in variable 'pos' delay(100); } else if (buttonState == 0) { digitalWrite(ledPin, HIGH); // LED goes on when the button has been pressed too many times } }
- Schematics
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Arduino with servo on pin 9
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Arduino with servo & button(use dial counter)
