FatPetFeeder every 12 hours

fpf12h.ino

#include <Servo.h>
#define second 1000
#define minute 60000
#define hour 3600000

Servo servo;
const int servoPin = 9;
const int buttonDispensePin = 7;
const int buttonMinusPin = 6;
const int buttonPlusPin = 8;
const int minMoveTime = 130;
const int minServing = 300;
const int ledPin = 13;
int servingTime = 1400; // 1000 – 9g, 2000 – 18g, 3000 – 27g, 3500 – 31g, 4000 - 36g
int servingDelta = 150;
int jerkPeriod = 700; // 1000/1000 – 9g, 1000/500 – 7g, 1400/700 – 12g
unsigned long lastFeeding=0;

void setup ()
{
    Serial.begin(57600);
    Serial.println();
    pinMode(ledPin, OUTPUT);
    digitalWrite(ledPin, LOW);
    pinMode(buttonDispensePin, INPUT_PULLUP);
    pinMode(buttonMinusPin, INPUT_PULLUP);
    pinMode(buttonPlusPin, INPUT_PULLUP);
    buzz();
}

void loop () 
{
  int dispenseVal = digitalRead(buttonDispensePin);
  if(dispenseVal == LOW)
    dispense(servingTime);
  int plusVal = digitalRead(buttonPlusPin);
  if(plusVal == LOW){
    delay(1000);
    int plusVal = digitalRead(buttonPlusPin);
    if(plusVal == LOW){
      servingTime+=servingDelta;
      buzz();
    }    
  }
  int minusVal = digitalRead(buttonMinusPin);
  if(minusVal == LOW){
    delay(1000);
    int minusVal = digitalRead(buttonMinusPin);
    if(minusVal == LOW){
      servingTime-=servingDelta;
      servingTime = servingTime<minServing?minServing:servingTime;
      buzz();
    }    
  }
  if(millis() - lastFeeding>12*hour)//
    dispense(servingTime);
  delay(10);
}

#define countof(a) (sizeof(a) / sizeof(a[0]))

void dispense(int dispenseTime)
{
  lastFeeding = millis();
  servo.attach(servoPin);
  for(;dispenseTime>0;dispenseTime-=jerkPeriod){
    servo.write(100);
    delay(dispenseTime>=jerkPeriod ? jerkPeriod : dispenseTime%1000);
    jerk();
  }
  stop();
}

void jerk()
{
  servo.write(0);
  delay(minMoveTime);
  servo.write(180);
  delay(minMoveTime);
}

void stop()
{
  servo.write(90);
  delay(100);
  servo.detach();
}

void buzz()
{
  servo.attach(servoPin);
  servo.write(0);
  delay(50);
  jerk();
  jerk();
  stop();
}

This code you linked is much more noob-friendly :P I'll study it up. Thank you.

Hi, i m very much interested in this! I would like to make the esp connected to wifi and control the machine remotely via my mobile device! let s say I'm in a park and wanna use my phone to fed! please sempai teach me!

well @AtlasKaiser\ this is how you would make it for example with apple home kit use this link https://github.com/Mixiaoxiao/Arduino-HomeKit-ESP8266

then open the folder and open the project " Example06_makesmart_lock"
this is in the examples
then paste the code from here to control the servo:

#include <Servo.h>

Servo myservo;

const int servoPin = 9;
const int ledPin = 13;

void setup() {
myservo.attach(servoPin);
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, LOW);
myservo.write(180);
delay(1000);
myservo.detach();
}

void loop() {
myservo.attach(servoPin);
myservo.write(30);
delay(575);
myservo.write(180);
delay(1500);
myservo.detach();
delay(3600000);
}

and there you go just enter your wifi username and password in the given space and pair. it is pretty simple to open the home app on an ios device then add accessory then select don't have the setup code and enter 12345678 it will take some time so keep your device close and you should have a fully working IOT cat feeder

make sure you use esp8266
I assume you know how to set it up with Arduino IDE
other things you should know if you unplug it then you will have to pair it one more I IDK why tho.