#25 Smart Greenhouse IoT Project With PicoBricks
In this project, we will prepare a simple glass smarthouse with IOT technology and PicoBricks. We will use PicoBricks with the ESP8266 wifi module in this greenhouse. In this way, we will turn the plant-house into an object that we can track over the Internet.
Table of Contents
Hello Maker! We will make a Smart greenhouse project today! You can check every detail here! Please get contact us when you make your own!
The rapid changes in climate due to the effect of global warming cause a decrease in productivity in agricultural activities. In the 1500s, Daniel Barbaro built the first known greenhouse in history. Plant-houses are suitable environments for growing plants that can provide controllable air, water, heat and light conditions.
In greenhouses, heaters are used to balance the heat, electric water motors for irrigation, fans are used to regulate humidity and to provide pollination. With the development of technology, the producer can follow the status of the greenhouse with his phone from anywhere and can do the work that needs to be done. The general name of this technology is Internet of Things (IOT)
Special sensors are used to measure temperature, humidity and oxygen content in plant-house. In addition, special sensors measuring soil moisture are used to decide on irrigation. Electronically controlled drip irrigation systems are used to increase irrigation efficiency.
Details and Algorithm
The glasshouse model you will prepare will include a soil moisture sensor, and a DHT11 temperature and humidity sensor hanging from the top. A submersible pump will be placed in the water tank outside the model, and the hose coming out of the end of the pump will go to the ground in the greenhouse. Picoboard will be placed in a suitable place outside the greenhouse model.
When Picobricks starts, it starts to broadcast wifi thanks to the ESP8266 wifi module. When we enter the IP address of Esp8266 from the smart phone connected to the same network, we encounter the web page where we will control the Greenhouse. Here we can see the temperature and humidity values. If we wish, we can start the irrigation process by giving the irrigation command.
Components for Smart Greenhouse Project
1X Pump
1X Soil Humidity Sensor
1X ESP8266 Wifi Module
PicoBricks Smart Greenhouse Kit
Jumper Cables
Easy Connection Cables
Wiring Diagram
You can code and run Picobricks’ modules without wiring. If you are going to use the modules by separating them from the board, you should make the module connections with grove cables.
Step by Step of the Project
1-Detach the floor of the model from the SR-2 coded part in the Greenhouse kit.
2- Attach the pieces in the middle of the SR-3 piece to the floor of the glasshouse.
3- Remove the inner walls of the greenhouse from the SR-4 part and attach it to the ground.
4- Remove the arches in SR-1 and SR-3 and place them on the plant-house floor.
5-Cover the rectangular area where soil will be placed with cling film. After irrigation, you will protect the model parts. Pour the plant soil into the greenhouse. Fill so that there is no empty space.
6- Insert the parts of the SR-4 into the notches on the greenhouse.
7-Thread the remaining two thin flat pieces of SR-4 through the holes on both sides of the greenhouse from the underside. This process makes the area more robust.
Wiring Diagram
You can code and run Picobricks’ modules without wiring. If you are going to use the modules by separating them from the board, you should make the module connections with grove cables.
MicroPython Codes of the PicoBricks
import time
import network
import socket
from machine import Pin, ADC
from picobricks import SSD1306_I2C, DHT11
from time import sleep
WIDTH = 128
HEIGHT = 64
sda=machine.Pin(4)
scl=machine.Pin(5)
i2c=machine.I2C(0,sda=sda, scl=scl, freq=1000000)
oled = SSD1306_I2C(WIDTH, HEIGHT, i2c)
motor_1 = Pin(21, Pin.OUT)
motor_2 = Pin(22, Pin.OUT)
smo_sensor=ADC(27)
dht_sensor = DHT11(Pin(11))
dht_read_time = time.time() # Defined a variable to keep last DHT11 read time
#Connect to Wifi
ssid = "WiFi ID"
password = "WiFi Password"
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)
max_wait = 10
status = wlan.ifconfig()
oled.text("Power On",30,0)
oled.text("Waiting for ",20, 30)
oled.text("Connection",23, 40)
oled.show()
while max_wait > 0:
if wlan.status() < 0 or wlan.status() >= 3:
break
max_wait -=1
print("waiting for connection...")
time.sleep(1)
if wlan.status() !=3:
print('network connection failed. Please Check ID and PASSWORD')
else:
print('connected')
status = wlan.ifconfig()
print( 'ip = ' + status[0] )
oled.fill(0)
html = """<!DOCTYPE html><html>
<head><meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href="data:,">
<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}
.buttonBlue { background-color: #0000FF; border: 2px solid #000000;; color: white; padding: 20px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; }
.buttonOrange { background-color: #FFA500; border: 2px solid #000000;; color: Black; padding: 20px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; }
text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}
</style></head>
<body><center><h1>Smart Green House</h1></center><br><br>
<form><center>
<center> <button class="buttonBlue" name="watering" value="watering" type="submit">WATERING</button>
<br><br>
<center> <button class="buttonOrange" name="check" value="status" type="submit">Check Status</button>
</form>
<br><br>
<br><br>
<p>%s<p></body></html>
"""
html2 = """<!DOCTYPE html><html>
<head><meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href="data:,">
<body><center></center>
<form></form>
<p>%s<p></body></html>
"""
# Open socket
addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]
s = socket.socket()
s.bind(addr)
s.listen(1)
print('listening on', addr)
oled.text("IP",50, 0)
oled.text(str(status[0]),20, 20)
oled.text("Connected",25, 40)
oled.show()
# Listen for connections, serve client
tempexp = str()
humexp = str()
soilexp = str()
while True:
if time.time() - dht_read_time >= 3:
dht_read_time = time.time()
try:
dht_sensor.measure()
except Exception as e:
pass
try:
cl, addr = s.accept()
print('client connected from', addr)
request = cl.recv(1024)
print("request:")
print(request)
request = str(request)
watering = request.find('watering')
checkstt = request.find('check')
print( 'watering = ' + str(watering))
print( 'checkstt = ' + str(checkstt))
if watering == 8: # Sulama
print("watering")
motor_1.high()
motor_2.high()
sleep(1)
motor_1.low()
motor_2.low()
if watering == 8:
dhtstt = "Watering for 1 sec..."
else: # Info
smo=round((smo_sensor.read_u16()/65535)*100)
temp=dht_sensor.temperature
hum=dht_sensor.humidity
dhtstt = "VALUES"
soilstt = "Soil Sensor Value: "
soilexp = str(smo) + "%"
humexp = "Huminity: " + str(hum) + "% "
tempexp = "Temperature: "+ str(temp) + "% "
# Create and send response
stateis2 = tempexp + humexp + " Soil: " + soilexp
stateis = dhtstt
response2 = html2 % stateis2
response = html % stateis
cl.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n')
cl.send(response)
cl.send(response2)
cl.close()
except OSError as e:
cl.close()
print('connection closed')
Arduino C Codes of the PicoBricks
#include <DHT.h>
#define RX 0
#define TX 1
#define LIMIT_TEMPERATURE 30
#define DHTPIN 11
#define DHTTYPE DHT11
#define smo_sensor 27
#define motor 22
#define DEBUG true
DHT dht(DHTPIN, DHTTYPE);
int connectionId;
void setup() {
Serial1.begin(115200);
dht.begin();
pinMode(smo_sensor, INPUT);
pinMode(motor, OUTPUT);
sendData("AT+RST\r\n", 2000, DEBUG); // reset module
sendData("AT+GMR\r\n", 1000, DEBUG); // configure as access point
sendData("AT+CIPSERVER=0\r\n", 1000, DEBUG); // configure as access point
sendData("AT+RST\r\n", 1000, DEBUG); // configure as access point
sendData("AT+RESTORE\r\n", 1000, DEBUG); // configure as access point
sendData("AT+CWMODE?\r\n", 1000, DEBUG); // configure as access point
sendData("AT+CWMODE=1\r\n", 1000, DEBUG); // configure as access point
sendData("AT+CWMODE?\r\n", 1000, DEBUG); // configure as access point
sendData("AT+CWJAP=\"WIFI_ID\",\"WIFI_PASSWORD\"\r\n", 5000, DEBUG); // ADD YOUR OWN WIFI ID AND PASSWORD
delay(3000);
sendData("AT+CIFSR\r\n", 1000, DEBUG); // get ip address
delay(3000);
sendData("AT+CIPMUX=1\r\n", 1000, DEBUG); // configure for multiple connections
delay(1000);
sendData("AT+CIPSERVER=1,80\r\n", 1000, DEBUG); // turn on server on port 80
delay(1000);
}
void loop() {
if (Serial1.find("+IPD,")) {
delay(300);
connectionId = Serial1.read() - 48;
String serialIncoming = Serial1.readStringUntil('\r');
Serial.print("SERIAL_INCOMING:");
Serial.println(serialIncoming);
if (serialIncoming.indexOf("/WATERING") > 0) {
Serial.println("Irrigation Start");
digitalWrite(motor, HIGH);
delay(1000); // 10 sec.
digitalWrite(motor, LOW);
Serial.println("Irrigation Finished");
Serial.println("! Incoming connection - sending WATERING webpage");
String html = "";
html += "<html>";
html += "<body><center><H1>Irrigation Complete.<br/></H1></center>";
html += "</body></html>";
espsend(html);
}
if (serialIncoming.indexOf("/SERA") > 0) {
delay(300);
float smo = analogRead(smo_sensor);
float smopercent = (460-smo)*100.0/115.0 ; //min ve max değerleri değişken.
Serial.print("SMO: %");
Serial.println(smo);
float temperature = dht.readTemperature();
Serial.print("Temp: ");
Serial.println(temperature);
float humidity = dht.readHumidity();
Serial.print("Hum: ");
Serial.println(humidity);
Serial.println("! Incoming connection - sending SERA webpage");
String html = "";
html += "<html>";
html += "<body><center><H1>TEMPERATURE<br/></H1></center>";
html += "<center><H2>";
html += (String)temperature;
html += " C<br/></H2></center>";
html += "<body><center><H1>HUMIDITY<br/></H1></center>";
html += "<center><H2>";
html += (String)humidity;
html += "%<br/></H2></center>";
html += "<body><center><H1>SMO<br/></H1></center>";
html += "<center><H2>";
html += (String)smopercent;
html += "%<br/></H2></center>";
html += "</body></html>";
espsend(html);
}
else
Serial.println("! Incoming connection - sending MAIN webpage");
String html = "";
html += "<html>";
html += "<body><center><H1>CONNECTED.<br/></H1></center>";
html += "<center><a href='/SERA'><h4>INFO:Get Sensor Data</a></br><a href='/WATERING'>WATERING:Run Water Pump</a></h4></center>";
html += "</body></html>";
espsend(html);
String closeCommand = "AT+CIPCLOSE="; ////////////////close the socket connection////esp command
closeCommand += connectionId; // append connection id
closeCommand += "\r\n";
sendData(closeCommand, 3000, DEBUG);
}
}
//////////////////////////////sends data from ESP to webpage///////////////////////////
void espsend(String d)
{
String cipSend = " AT+CIPSEND=";
cipSend += connectionId;
cipSend += ",";
cipSend += d.length();
cipSend += "\r\n";
sendData(cipSend, 1000, DEBUG);
sendData(d, 1000, DEBUG);
}
//////////////gets the data from esp and displays in serial monitor///////////////////////
String sendData(String command, const int timeout, boolean debug)
{
String response = "";
Serial1.print(command);
long int time = millis();
while ( (time + timeout) > millis())
{
while (Serial1.available())
{
char c = Serial1.read(); // read the next character.
response += c;
}
}
if (debug)
{
Serial.print(response); //displays the esp response messages in arduino Serial monitor
}
return response;
}