Hi all,
I've got a problem in my program and im not quite sure where its gone wrong.
The aim is to create a series of alarms that open and close a door (via a servo motor) depending on the value of 2 switches.
So far, Ive been able to isolate the process of turning the servo with a dedicated alarm, but combining the code with the 2 swtiches is giving me a problem. Ive looked for similar projects online and this forum, but ive not yet come across one that addresses this.
The problems I would like to solve are:
- How can I make the open and close alarm work only when both switches are HIGH
- Considering that Im going to need 10+ alarm opens + closes, would there be an array function more suitable than my proposal
- Is it possible to use the arduino as a timer once I disconnect it from the computer (i.e. without needing a serial begin)
This is the initial code that moves the servo based on the alarm time (this works)
#include <Time.h>
#include <Servo.h>
#include <TimeAlarms.h>
Servo myservo; // create servo object to control a servo
int pos = 0; // variable to store the servo position
void setup()
{
Serial.begin(9600);
setTime(12,0,0,1,1,11); // set time to noon Jan 1 2011
myservo.attach(9); // attaches the servo on pin 9 to the servo object
Alarm.alarmRepeat(12,0,05,Open); // unlock door
Alarm.alarmRepeat(12,0,10,Close); // lock door
myservo.write(pos);
}
void loop(){
digitalClockDisplay();
Alarm.delay(100);
}
void Open(){
pos = 180;
myservo.write(pos);
}
void Close(){
pos = 0;
myservo.write(pos);
}
void digitalClockDisplay(){ // digital clock display of the time
Serial.print(hour());
printDigits(minute());
printDigits(second());
Serial.print(" ");
Serial.println();
}
void printDigits(int digits){ // utility function for clock display
Serial.print(":");
if(digits < 10)
Serial.print('0');
Serial.print(digits);
}
These are 2 options I have tested to try and make the open and close commands dependant on the switch values of the coherer and door.
Test 1:
#include <Time.h>
#include <Servo.h>
#include <TimeAlarms.h>
Servo myservo; // create servo object to control a servo
int pos = 0; // variable to store the servo position
int coherer = 0; //attached to switch a
int door = 0; // attached to switch b
void setup()
{
Serial.begin(9600);
setTime(12,0,0,1,1,11); // set time to noon Jan 1 2011
myservo.attach(9); // attaches the servo on pin 9 to the servo object
pinMode(8, INPUT); // door input
pinMode(2, INPUT); // coherer input
pinMode(3, OUTPUT); //green light
pinMode(4, OUTPUT); //red light
Serial.begin(9600);
myservo.write(pos); //reset position of servo
digitalClockDisplay();
Alarm.delay(100);
}
void loop(){
coherer = digitalRead(2);
door = digitalRead(8);
digitalClockDisplay();
delay(500);
if(coherer == HIGH && door == HIGH){ //door shut + coherer on
digitalWrite(3,HIGH);
digitalWrite(4,HIGH);
Alarm.alarmRepeat(12,0,05,Open); // 5:45pm every day
Alarm.alarmRepeat(12,0,10,Close); // 5:45pm every day
}
else if (coherer == LOW && door == HIGH) { // door open + coherer on
digitalWrite(3,HIGH); //green light
digitalWrite(4,LOW); //red light
}
else if(coherer ==LOW && door == LOW){ //door open + coherer off
digitalWrite(3,LOW);
digitalWrite(4,LOW);
}
}
void Open(){
pos = 180;
myservo.write(pos);
}
void Close(){
pos = 0;
myservo.write(pos);
}
void digitalClockDisplay(){
// digital clock display of the time
Serial.print(hour());
printDigits(minute());
printDigits(second());
Serial.print(" ");
Serial.println();
}
void printDigits(int digits){ // utility function for clock display: prints preceding colon and leading 0
Serial.print(":");
if(digits < 10)
Serial.print('0');
Serial.print(digits);
}
Test 2
#include <Time.h>
#include <Servo.h>
#include <TimeAlarms.h>
Servo myservo; // create servo object to control a servo
int pos = 0; // variable to store the servo position
int coherer = 0; // attached to switch a
int door = 0; // attached to switch b
void setup()
{
Serial.begin(9600);
setTime(12,0,0,1,1,11); // set time to noon Jan 1 2011
myservo.attach(9); // attaches the servo on pin 9 to the servo object
pinMode(8, INPUT); //door input
pinMode(2, INPUT); //coherer input
pinMode(3, OUTPUT); // green light
pinMode(4, OUTPUT); // red light
myservo.write(pos);
digitalClockDisplay();
Alarm.delay(100);
Alarm.alarmRepeat(12,0,05,Open); // door open - 1
Alarm.alarmRepeat(12,0,10,Close); // door close
Alarm.alarmRepeat(12,0,30,Open); // door open - 2
Alarm.alarmRepeat(12,0,35,Close); // door close
}
void loop(){
coherer = digitalRead(2);
door = digitalRead(8);
digitalClockDisplay();
delay(500);
}
void Open() {
if(coherer == HIGH && door == HIGH){ //door shut + coherer on
digitalWrite(3,HIGH);
digitalWrite(4,HIGH);
pos = 180;
myservo.write(pos);
}
pos = 0;
myservo.write(pos);
}
void Close() {
if(coherer == HIGH && door == HIGH){ //door shut + coherer on
digitalWrite(3,HIGH);
digitalWrite(4,HIGH);
pos = 0;
myservo.write(pos);
}
else if (coherer == HIGH && door == LOW){ //door open + coherer on
digitalWrite(3,HIGH);
digitalWrite(4,LOW);
pos = 180;
myservo.write(pos);
}
else if (coherer == LOW && door == HIGH){ //door shut + coherer off
digitalWrite(3,LOW);
digitalWrite(4,HIGH);
pos = 0;
myservo.write(pos);
}
}
void digitalClockDisplay(){ // digital clock display of the time
Serial.print(hour());
printDigits(minute());
printDigits(second());
Serial.print(" ");
Serial.println();
}
void printDigits(int digits){ // utility function for clock display: prints preceding colon and leading 0
Serial.print(":");
if(digits < 10)
Serial.print('0');
Serial.print(digits);
}
My logic would ideally proceed like this:
IF - switch a is HIGH
YES
IF - switch b is HIGH
YES
IF - TIME ALARM IS OPEN
YES
THEN - Servo pos - 180
OTHERWISE Servo pos - 0
Please accept my humble attempts to make the circuit. This is my first dive into the arduino world!
If this is not in the right thread, anything is unclear, or this something I should pay the community to help me with please let me know.
Im quite excited about trying this out, and look forward to putting the final results up here! 
