Tinkering bit with Arduino nano, got a little grasp about the coding.
Setup is simple Arduino nano controls servo to open and close the valve 4 times a day.
This the code I'm currently running.
#include <Servo.h>
unsigned long time = 21600000;
Servo myservo; // create servo object to control a servo
// twelve servo objects can be created on most boards
int pos = 90; // variable to store the servo position
void setup() {
myservo.attach(9); // attaches the servo on pin 9 to the servo object
}
void loop() {
{
delay(1000); //valve open time
}
for (pos = 45; pos <= 135; pos ++) { // goes from 45 degrees to 135 degrees
// in steps of 1 degree
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
{
delay(time); //valve closed time
}
for (pos = 135; pos >= 45; pos --) { // goes from 135 degrees to 45 degrees
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
}
Few questions about servo, it's humming when it should be idle and there is very little warmth when I touch the servo sides. Should I use external power to supply the servo and where is this humming coming from?
I will try to find CTR to control the time better, but really hard to find these stuff in our country (probably have to order from abroad). But just simple setup I think this would work just fine. By the way, what type of CTR should I look into? is PCF8523 compatible with arduino nano?
Thanks!