Pet feeder

1#include <SPI.h>
2#include <MFRC522.h>
3#include <Servo.h>
4
5#define  SS_PIN 53
6#define RST_PIN 5
7
8MFRC522 mfrc522(SS_PIN, RST_PIN); // Create  MFRC522 instance
9Servo servo; // Create servo object
10
11const int redPin  = 9; // Red LED pin
12const int greenPin = 10; // Green LED pin
13const int bluePin  = 11; // Blue LED pin
14
15void setup() {
16  Serial.begin(9600); // Initialize  serial communication
17  SPI.begin(); // Initialize SPI communication
18  mfrc522.PCD_Init();  // Initialize MFRC522
19  servo.attach(6); // Attach servo to pin 6
20  pinMode(redPin,  OUTPUT); // Set red LED pin as output
21  pinMode(greenPin, OUTPUT); // Set green  LED pin as output
22  pinMode(bluePin, OUTPUT); // Set blue LED pin as output
23  // Turn on green LED and turn off red and blue LEDs
24  digitalWrite(redPin,  LOW);
25  digitalWrite(greenPin, HIGH);
26  digitalWrite(bluePin, LOW);
27}
28
29void  loop() {
30  // Check for new RFID card
31  if (mfrc522.PICC_IsNewCardPresent())  {
32    // Select the scanned card
33    MFRC522::PICC_Type piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);
34    if (piccType != MFRC522::PICC_TYPE_UNKNOWN) {
35      // LED blue for 2 seconds
36      digitalWrite(bluePin, HIGH);
37      delay(2000);
38      digitalWrite(bluePin,  LOW);
39      // LED red for 5 seconds
40      digitalWrite(redPin, HIGH);
41      digitalWrite(greenPin, LOW);
42      digitalWrite(bluePin, LOW);
43      //  Rotate servo 180 degrees and back in the 5 seconds of being red
44      for (int  i = 0; i <= 180; i++) {
45        servo.write(i);
46        delay(14);
47      }
48      for (int i = 180; i >= 0; i--) {
49        servo.write(i);
50        delay(14);
51      }
52      digitalWrite(redPin, LOW);
53      // LED blue for 2 seconds
54      digitalWrite(bluePin, HIGH);
55      delay(2000);
56      digitalWrite(bluePin,  LOW);
57      // Turn on green LED
58      digitalWrite(greenPin, HIGH);
59    }
60  }
61}