A Keurig coffee maker controlled by an ESP 8266 , Cayenne myDevices, Arduino Pro Mini and a stepper motor with driver.
In essence, a hot cup of coffee made at 7:00 each morning.
Follow my Mail tutorial for info on setting up Cayenne and use this code on the ESP 8266:
[code]#define CAYENNE_DEBUG // Uncomment to show debug messages
#define CAYENNE_PRINT Serial // Comment this out to disable prints and save space
#include <CayenneDefines.h>
#include <BlynkSimpleEsp8266.h>
#include <CayenneWifiClient.h>
#include <Arduino.h>
#include <SoftwareSerial.h>
// Cayenne authentication token. This should be obtained from the Cayenne Dashboard.
char token = “”; //device code
char ssid = “”; //your ssid
char password = “”; // network password
void setup()
{
Serial.begin(9600);
Cayenne.begin(token, ssid, password);
}
void loop()
{
Cayenne.run();
}
[/code]
This code needs to go into your Arduino
#define IN1 5
#define IN2 6
#define IN3 10
#define IN4 11
int Steps = 0;
boolean Direction = true;// gre
unsigned long last_time;
unsigned long currentMillis ;
int steps_left=4095;
long time;
const byte IOTpressed = 1;
// Interrupt Service Routine (ISR)
void switchPressed ()
{
if (IOTpressed==HIGH){
while(steps_left>0){
currentMillis = micros();
if(currentMillis-last_time>=1000){
press(1);
time=time+micros()-last_time;
last_time=micros();
steps_left--;
}
}
Direction=!Direction;
steps_left=4095;
}
else {
IOTpressed==LOW;
}
}
void setup ()
{
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(IN3, OUTPUT);
pinMode(IN4, OUTPUT);
pinMode(IOTpressed, INPUT);
attachInterrupt (0, switchPressed, CHANGE); // attach interrupt handler
} // end of setup
void loop ()
{
// loop doing nothing
}
void press(int xw){
for (int x=0;x<xw;x++){
switch(Steps){
case 0:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
case 1:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, HIGH);
break;
case 2:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 3:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 4:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 5:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 6:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 7:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
default:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
}
SetDirection();
}
}
void SetDirection(){
if(Direction==1){ Steps++;}
if(Direction==0){ Steps--; }
if(Steps>7){Steps=0;}
if(Steps<0){Steps=7; }
}
Connect Pin D2 from the Node Mcu Esp8266 to Pin 2 on your Arduino.
Connect pins 5,6,10,11 to your stepper driver board.
Use self taping screws to attach your stepper motor.
Use super glue and a popcicle stick to extend the stepper motor shaft. (I used a piece of a broken propeller)
