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Blynk Plants Grow Box

Hi,

I just (finnaly) finished my Grow Box and wanna share it.

Hardware:
Wemos D1 mini Pro;
3 x DS18B20 One Wire Temperature Sensors;
SI70 - RH & Temp Sensor;
4 Relay module Board
1 TIPP31C for each Fan (For speed control)

Features:
Automatic lamps temperature (I used COB lights with a large radiator cooled by 2 12V fans);
Setting up the box temperature by large 12V fan that blows in air driven by a TIPP31C transistor;
Setting up the upper box temperature by a medium 12V fan that blows out the air driven by other transistor;
Setting up the RH inside the box with a piezo “mist maker”;
Setting up timers for light schedule;
Silent buttons for all the fans;

I will be more than glad for opinions and improvements. I must mention that I am at the very low knowledge of programming world so… I will really be happy if you can see something wrong or something that it could be better.

Thank you!

Code:

#define BLYNK_PRINT Serial  // Comment this out to disable prints and save space
//#define BLYNK_DEBUG
#include <OneWire.h>
#include <DallasTemperature.h>
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h>
#include <SPI.h>
#include <Si7021.h>
#define ONE_WIRE_BUS 0    //Data wire plugged to pin (DS18B20 sensor)

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
Si7021 si7021;
SimpleTimer timer;

//int test;
int ledsFanSilentModeButton;
int ledsTimerState;
int ledsTimer = 16; //Lamp relay pin for timer widget
int fanInPin = 13;
int fanOutPin = 12;
int boxFansTimerState;
int fanInSilentModeButton;
int fanOutSilentModeButton;
int inMinSetTemp;
int outMinSetTemp;
int humidifierPin = 14; //Humidifier relay pin
int rhSetValue;

char auth[] = "f427bbd267894a08bdd4219axxf46ab1"; //Put your Auth Token in the Blynk App here
char ssid[] = "Vecinu' de deasupra";
char pass[] = "individual";

WidgetLED onOffLedsLed(V20);
WidgetLED humidifierStateLed(V21);
BLYNK_WRITE(V0) {
  ledsTimerState = param.asInt();
}
BLYNK_WRITE(V51) {
  ledsFanSilentModeButton = param.asInt();
}
BLYNK_WRITE(V52) {
  fanInSilentModeButton = param.asInt();
}
BLYNK_WRITE(V53) {
  fanOutSilentModeButton = param.asInt();
}
BLYNK_WRITE(V40) {
  inMinSetTemp = param.asInt();
}
BLYNK_WRITE(V41) {
  outMinSetTemp = param.asInt();
}
BLYNK_WRITE(V42) {
  rhSetValue = param.asInt();
}

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass); //insert here your SSID and password
  sensors.begin(); //DS18B20 temp. sensors
  si7021.begin();
  sensors.setResolution(10);   //More on resolution: http://www.homautomation.org/2015/11/17/ds18b20-how-to-change-resolution-9101112-bits/
  timer.setInterval(1000, readTemps);   //DS18B20 Data reading interval
  pinMode(ledsTimer, OUTPUT);
  pinMode(fanInPin, OUTPUT);
  pinMode(fanOutPin, OUTPUT);
  pinMode(humidifierPin, OUTPUT);
  Blynk.syncVirtual(V0, V51, V52, V53, V20, V40, V41, V42);

}
void readTemps() {
  sensors.requestTemperatures();
  float ledTemp = sensors.getTempCByIndex(0); //Stores temperature. Change to getTempFByIndex(0) for F.
  float tempTavan = sensors.getTempCByIndex(1);
  float tempDataLogger = sensors.getTempCByIndex(2);
  float boxTemp = si7021.getTemperatureFromPreviousHumidityMeasurement();
  float boxRH = si7021.measureHumidity();
  Blynk.virtualWrite(V1, tempTavan); //DS18B20 temperatures
  Blynk.virtualWrite(V2, ledTemp);
  Blynk.virtualWrite(V3, tempDataLogger);
  Blynk.virtualWrite(V4, boxRH);
  Blynk.virtualWrite(V5, boxTemp);

  //------------PWM Global Fans automatic Settings-------------//
  int ledsFanPin = 15;
  const int fanSpeedOff = 0;
  const int fanSpeedIdle = 60;
  const int fanSpeed20 = 100;
  const int fanSpeed40 = 200;
  const int fanSpeed60 = 400;
  const int fanSpeed80 = 800;
  const int fanSpeed100 = 1024;
  int ledsFanCtrlTemp;
  int inFanCtrlTemp;
  int outFanCtrlTemp;

  //-----------Leds Timer-----------//
  if (ledsTimerState == 1) {
    digitalWrite(ledsTimer, HIGH);
    onOffLedsLed.on();
  } else {
    digitalWrite(ledsTimer, LOW);
    onOffLedsLed.off();
  }

  //-----Leds Fan silent Mode button-----//
  if (ledsFanSilentModeButton) {
    ledsFanCtrlTemp = 15;
  } else {
    ledsFanCtrlTemp = ledTemp;
  }
  //-------Fan in Silent Mode button------//
  if (fanInSilentModeButton == 1) {
    inFanCtrlTemp = 15;
  } else {
    inFanCtrlTemp = boxTemp;
  }

  //------Fan Out Silent Mode Button------//
  if (fanOutSilentModeButton == 1) {
    outFanCtrlTemp = 15;
  } else {
    outFanCtrlTemp = tempTavan;
  }

  //---------------LED fan automatic control------------------//
  if (ledsFanCtrlTemp <= 30) {
    analogWrite(ledsFanPin, fanSpeedOff);
    Blynk.virtualWrite(V30, "OFF");
  }
  else if (ledsFanCtrlTemp == 33) {
    analogWrite(ledsFanPin, fanSpeedIdle);
    Blynk.virtualWrite(V30, "IDLE");
  }
  else if (ledsFanCtrlTemp == 35) {
    analogWrite(ledsFanPin, fanSpeed20);
    Blynk.virtualWrite(V30, "20%");
  }
  else if (ledsFanCtrlTemp == 37) {
    analogWrite(ledsFanPin, fanSpeed40);
    Blynk.virtualWrite(V30, "40%");
  }
  else if (ledsFanCtrlTemp == 40) {
    analogWrite(ledsFanPin, fanSpeed60);
    Blynk.virtualWrite(V30, "60%");
  }
  else if (ledsFanCtrlTemp == 45) {
    analogWrite(ledsFanPin, fanSpeed80);
    Blynk.virtualWrite(V30, "80%");
  }
  else if (ledsFanCtrlTemp >= 50) {
    analogWrite(ledsFanPin, fanSpeed100);
    Blynk.virtualWrite(V30, "100%");
  }

  //-----------------Fan In automatic control-------------------//
  if (inFanCtrlTemp < inMinSetTemp) {
    analogWrite(fanInPin, fanSpeedOff);
    Blynk.virtualWrite(V31, "OFF");
  }
  else if (inFanCtrlTemp == inMinSetTemp) {
    analogWrite(fanInPin, fanSpeedIdle);
    Blynk.virtualWrite(V31, "IDLE");
  }
  else if (inFanCtrlTemp == inMinSetTemp + 1) {
    analogWrite(fanInPin, 512);
    Blynk.virtualWrite(V31, "50%");
  }
  else if (inFanCtrlTemp >= inMinSetTemp + 2) {
    analogWrite(fanInPin, 1023);
    Blynk.virtualWrite(V31, "100%");
  }

  //--------------------Fan Out Automatic Control-----------------//
  if (outFanCtrlTemp < outMinSetTemp) {
    analogWrite(fanOutPin, fanSpeedOff);
    Blynk.virtualWrite(V32, "OFF");
  }
  else if (outFanCtrlTemp == outMinSetTemp) {
    analogWrite(fanOutPin, 19);
    Blynk.virtualWrite(V32, "IDLE");
  }
  else if (outFanCtrlTemp == outMinSetTemp + 1) {
    analogWrite(fanOutPin, 40);
    Blynk.virtualWrite(V32, "50%");
  }
  else if (outFanCtrlTemp >= outMinSetTemp + 2) {
    analogWrite(fanOutPin, fanSpeed20);
    Blynk.virtualWrite(V32, "80%");
  }

  //--------------------RH Automatic Control---------------------//
  if (rhSetValue > boxRH) {
    digitalWrite(humidifierPin, HIGH);
    humidifierStateLed.on();
  }else{
    digitalWrite(humidifierPin, LOW);
    humidifierStateLed.off();
  }
}
void loop() {
  Blynk.run();
  timer.run();
}

Pictures:

2 Likes

that looks pretty hefty for a couple of plants…so what exactly are you going to grow there?

1 Like

:slight_smile:

1 Like

…Im apparently not the only one with that thought…

2 Likes

No, you’re certainly not. Thinking of lilies and remains :slight_smile:

1 Like

Very cool box. Love it!

Show us your “lilies” when they are “ready” :wink:

1 Like

i’m sure that it will be tomatoes… or not XD

African broccoli :sunglasses:?

I have to agree with @pavel here: it really is a cool box! Nice project and yet another awesome example of how blynk can be put to good use (just like the bbq )

1 Like

A bbq, a broccoli grow box… we need a beer cooler and we can start the pool party :sunglasses:

1 Like

@trystan4861

It’s already there :wink: :beers:

4 Likes

epic :heart_eyes:

Well if all is done then i’ll carry the ox chops… these are from my town, 1kg each with four to five centimeters of thick :crazy_face:

1 Like

Thank you guys! I will not grow anything illegal!
After today’s tests it seems that with this particular line:

WidgetLED humidifierStateLed(V21);

When the humidity must rise and turn on the humidifier relay (that works without led widget) I get a watchdog reset.

load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
v614f7c32
~ld
[4937] Connecting to Vecinu' de deasupra
[5439] Connected to WiFi
[5439] IP: 192.168.1.132
[5439] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v0.5.3 on Arduino

  Give Blynk a Github star! => https://github.com/blynkkk/blynk-library

[5452] Connecting to blynk-cloud.com:80
[5598] Ready (ping: 35ms).

 ets Jan  8 2013,rst cause:4, boot mode:(1,7)

wdt reset

Don’t know why because the led widget for lamp timer works perfect…
I know maybe it is not a blynk related problem but could you give me a hand.
Thanks.

Try replacing this line:

humidifierStateLed.on(); with Blynk.virtualWrite(V21, 255);

and this line:

humidifierStateLed.off(); with Blynk.virtualWrite(V21, 0);

See if it helps. WDT reset can be produced by doubling virtual pin functions in your code, but this is not the case here, as far as I can see.

1 Like

Seems to work for now! Thank you very much!

1 Like

Do you happen to live in the Netherlands? As its perfectly legal to grow upto 5 african broccoli’s in your home.

and in other countries it is legal if it will be used for therapeutic purposes under medical prescription