Published March 10, 2023 © MIT

Smart Shop Controller

This smart shop controller is for any shop concerned with safety, security and sanitation. A fully connected device for any shop owner.

BeginnerWork in progressOver 2 days138

Things used in this project

Hardware components

Particle Argon

Adafruit Monochrome 1.3" 128x64 OLED graphic display

Adafruit NeoPixel Ring: WS2812 5050 RGB LED

Rotary Encoder with Push-Button

Maxim Integrated MAX30105 High-Sensitivity Optical Sensor for Smoke Detection Applications

SG90 Micro-servo motor

Photodiode, 1 nA

Philips hue

Hand tools and fabrication machines

Laser cutter (generic)

3D Printer (generic)

Story

The smart shop controller has been created in response to the multitude of problems I have incurred as a studio artist, and running a small garment decoration business in Downtown Albuquerque New Mexico, USA. I have been so lucky to join the IoT Bootcamp to address these issues.

Many times I would have to ask if my employees had locked the door after operating hours. I have even arrived at my shop to find it unlocked in the past. Not good for security!

We run heaters to cure ink to fabric during the printing process, many times workers can be so busy, or get distracted, and we do not see a shirt getting too hot or it actually can catch fire and burn! Not good for safety !

As stated before we are very busy in the shop and sometimes I have noticed people peering in to see if we are open. Not good for sales !

Finally one of my biggest pet peeves and perhaps the initial inspiration for the whole project, public urination! No one like their place of work or business used as a public restroom! Not good sanitation!

So to address these issues: First the smart shop controller has a photodiode that controlls auto lock for an extra layer of security at night ( Also manual lock with a push button control). Second the controller has been outfitted with a smoke detector, if garments get too hot, a visual cue and an audio alert are sent out to avoid burning tees! Third a custom lazer cut plexi glass sign with a cool feature of old scool manual control of neo pixels via encoder, to light up the front area, letting everyone will know we are open and ready for walk-in business. Last but not least, a smart water pump that would detect moisture in key areas outside of the shop and pump out water to clean up the situation before it, gets worse...

Schematics

Code

SmartShopController1

SmartShopController1

C/C++

I used this code to set off red warning phillips hue lights if smoke is detected , this would serve as a gentle warning to workers that a tee shirt or printing platen may be getting too hot and to address it before there is scorching. Also there is a photodiode that sends a signal to a servo motor that can be hooked up to a locking mechanism when it is dark, basically if the lights are out, the shop should be locked, and this serves as a failsafe if someone forgets to lock the door, an extra layer of security. And last but not least, the Smart Shop Controller even comes equipped with a liquid sensor that controls a pump to clean up any undesireable liquids, like someone urinating in the shop, one of my pet peeves! Basically the liquid sensor senses liquid and activates a smart plug that pumps water out from a water pump, to clean up the mess a bit. (There is a manual button for neo pixel, open sign and encoder controlled phillips hue lights that did not make it into this code!)

/*
 * Project SmartShopSourceCode002
 * Description: SmartShopSourceCode
 * Author:JBlack
 * Date:03-09-2023
 */
#include "IoTClassroom_CNM.h"
#include <math.h>
const int photodiodePin = A1; // reading from photodiode
const int servoPin = D8; //servo pin
int photodiodeValue, brightness;  //int for photodiodevalue , int for brightness
const float OFFSET = 90; 
const float AMP = 90;
float t; // variable for time
float signal; // variable that will be outputted
float freq = 0.2; // frequency for sin-wave. freq = 1/period
const int BULB5= 5;
const int BULB4=4;
const int BULB3=3;
const int BULB2=2;
const int BULB1=1;
int color;
const int button=D5;
bool buttonState;
bool toggleState;

int pin = 8;
unsigned long duration;
unsigned long starttime;
unsigned long sampletime_ms = 30000;//sampe 30s ;
unsigned long lowpulseoccupancy = 0;
float ratio = 0;
float concentration = 0;
const int waterSens = A3; // define water sensor
int val;
int relay = 17;

Servo myservo; // create servo object to control a servo
SYSTEM_MODE (SEMI_AUTOMATIC);
void setup()
{
  {
  pinMode(waterSens, INPUT); // set water sensor as an input
  Serial.begin(9600); // initialize Serial  
}
pinMode(relay, OUTPUT);      // Initialize pin as an output

  Serial.begin (9600);
  pinMode(photodiodePin, INPUT);
  myservo.attach(servoPin); // attached to pin D6
  pinMode(pin,INPUT);
    starttime = millis();
  waitFor(Serial.isConnected,15000);
  
  WiFi.on();
  WiFi.setCredentials("IoTNetwork");

  WiFi.connect();
  while(WiFi.connecting()) {
    Serial.printf(".");
  }
  delay(1000);
  Serial.printf("\n\n");
  

}
  void loop() {
  duration = pulseIn(pin, LOW);
    lowpulseoccupancy = lowpulseoccupancy+duration;

    if ((millis()-starttime) > sampletime_ms){
    concentration >=3000;
    duration = millis();
   //switchON ();
     setHue(BULB5,true,HueRed,255,255);
     setHue(BULB4,true,HueRed,255,255);
     setHue(BULB3,true,HueRed,255,255);
     setHue(BULB2,true,HueRed,255,255);
     setHue(BULB1,true,HueRed,255,255);
} 
  
   else {
   setHue(BULB5,false,HueRed,255,255);
   setHue(BULB4,false,HueRed,255,255);
   setHue(BULB3,false,HueRed,255,255);
   setHue(BULB2,false,HueRed,255,255);
  setHue(BULB1,false,HueRed,255,255);
    
   }    //switchOFF ();
    Serial.printf ("sensorread");
     photodiodeValue = analogRead(photodiodePin);
  brightness = 255 - (photodiodeValue / 16);
  Serial.printf("\n\n\nphotodiodeValue=%i\n,brightness=%i\n\n\n",photodiodeValue,brightness);
  
 // analogWrite(servoPin, brightness);

// myservo.write(60);
// delay(1000);
// myservo.write(120);
// delay(1100);

  if (photodiodeValue < 600) { // check if it is dark
    signal = AMP * sin(2 * M_PI * freq * t) + OFFSET; //sine wave
    myservo.write(signal); //send via my servo
    t = millis() / 1000.0; //time in milliseconds
  }
  val = analogRead(waterSens);
  if (val > 150){// read the water sensor
  Serial.printf("Water level value = %d\n", val); // print the water level value to Serial
digitalWrite(relay, HIGH);   // Turn the relay on (HIGH is the voltage level = 1)
delay(5000);                 // Stay ON for 5 seconds
digitalWrite(relay, LOW);    // Turn the relay off by making the voltage LOW = 0
delay(3000);                 // Stay OFF for 30 seconds
}
  }