Timer Servo motor

Projects Programming
1

Hello. I am new to arduino. I need help programming a timer for a servo motor. I have a ventilation hole that I want my sevo motor to open that hole every 60 minutes and keep it open for 5 minutes and then close it again and so every 60 minutes. The start would be every time it received power, meaning not at a specific time but from the start of the power supply

2

what type of servo motor is it?

3

SG 90 micro

4

Do you know how to use the servo library?
Also, you can use the delay function or the millis function for waiting in between servo movements.

5

I have no idea. Can you do a short tutorial?

6

Google;

arduino servo tutorial

Tom.. :smiley: :+1: :coffee: :australia:

7

Based on this example, something like this then:
(Compiles, NOT tested!)

#include <Servo.h>

Servo myservo;  // create servo object to control a servo

#define WAIT_TIME 3600 //time between openings in seconds
#define OPEN_TIME 300 //duration vent is kept open in seconds

uint32_t oldtime, second_count;
uint8_t pos = 0;    // variable to store the servo position

void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
  oldtime = millis();
  second_count = 0;
  myservo.write(pos); //initialise servo to 'close' position (TBC)
}

void loop() {
  if (millis() - oldtime >= 1000) { //enter if statement approx every 1000ms
    ++second_count; //increment counter

    if (second_count == WAIT_TIME) {
      pos = 180;
      myservo.write(pos); //got to 'fully open' positon (TBC)
    }
    else if (second_count == WAIT_TIME + OPEN_TIME) {
      pos = 0;
      myservo.write(pos); //got to 'fully close' positon (TBC)
      second_count = 0; //reset second counter
    }
    oldtime = millis();
  }
}

that should at least get you started! :wink:

as for the rest, as other ppl here has advised, do some online self-learning!

hope that helps...

8

I will try to test it and refine it if necessary. Thank you

9

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