Servo motor interface with Arduino uno sweep the servo from 0 to 180 degrees in steps of 1 degrees with code

Electronics Curiosities September 30, 2020

 Servo motor interface with Arduino Uno





Components Requirements
  1. Servo motor
  2. Arduino Uno
  3. USB A/B cable
  4. Jumper Wires


Servo motor have three pins: power, ground, and signal. The power cord is usually red and should be connected to a 5V pin on the Arduino Uno board. The ground wire is usually black and should be attached to the ground pin on the board. The signal pin should be attached to pin 9 on the board. Check Datasheet for Servo Motor


How many degrees does servo motor rotate?

The standard servo of high torque can rotate about 180 degrees 90 degrees on each side.


How much voltage does a servo need?


The standard power is 4.8 V DC, but 6 V and 12 V are also used for a few servos. Control signal is a digital Pulse width modulating signal with a frame rate of 50 Hz.


What is #include <Servo.h> ?


This library allows an Arduino board to control RC servo motors. Servo motors have integrated gears and a shaft that can be precisely controlled. Standard servos allow the shaft to be positioned at various angles, usually between 0 and 180 degrees.



How do you control the position of a servo motor?


Servo motor is controlled by sending a pulse of various widths, or pulse wide modulation, over a control wire (signal pin). There is a low PWM rate, a high PWM rate, and a recurrence rate. A servo motor usually can only rotate 90 ° on one side for a full 180 ° movement.



How many servo motors can Arduino Uno control?

Servo motor Library supports 12 motors on most Arduino board and 48 motors on Arduino Mega Board.

Pins Description and Hardware Components on Arduino Uno- Check


Sweep the servo from 0 to 180 degrees in steps of 1 degrees


code 

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#include <Servo.h>

int pos = 0;

Servo servo_9;

void setup()

{

  servo_9.attach(9);

}

void loop()

{

  // sweep the servo from 0 to 180 degrees in steps

  // of 1 degrees

  for (pos = 0; pos <= 180; pos += 1) {

    // tell servo to go to position in variable 'pos'

    servo_9.write(pos);

    // wait 15 ms for servo to reach the position

    delay(15); // Wait for 15 millisecond(s)

  }

  for (pos = 180; pos >= 0; pos -= 1) {

    // tell servo to go to position in variable 'pos'

    servo_9.write(pos);

    // wait 15 ms for servo to reach the position

    delay(15); // Wait for 15millisecond(s)

  }

}

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