Evidence

Team EGE177 Urban Farming:

Ivan

•

Chen Yin

•

max

Published February 16, 2025

Urban Farming EEP

This project aims to improve the issue of manpower shortages in the urban farming industry by developing an automated harvesting system.

BeginnerWork in progress125

Things used in this project

Hardware components

M5Stack FIRE IoT Development Kit (PSRAM 2.0)

M5Stack Light Unit with Photo-resistance

M5Stack ENV III Unit with Temperature Humidity Air Pressure Sensor (SHT30+QMP6988)

SG90 Micro-servo motor

M5Stack Earth Module Grove Compatible Soil monitoring

M5Stack Time-of-Flight (ToF) VL53L0X Laser Ranging Unit (MCP4725/)

Software apps and online services

Uiflow desktop IDE and Web IDE

Qubitro

Hand tools and fabrication machines

Hot glue gun (generic)

Scissor, Electrician

Story

Urban farming refers to the practice of growing food in city environments. Unlike traditional rural farming, urban agriculture takes place within densely populated areas, using innovative techniques and limited spaces. This can include small-scale initiatives like backyard gardens and vertical farming systems or larger projects such as rooftop farms and community gardens.

Evidence:

Parliament: More help given to farmers to boost productivity, manpower

A review on urban farming: Potential, challenges and opportunities

From two references by online articles, a common challenge faced in urban farming is the lack of skilled and knowledgeable manpower.

Our Objective:

To increase the efficiency of urban farming while being less reliant on manpower.
To reduce the need for skilled manpower and maintain the same amount of productivity
To make an automated farm simple for all users to operate and understand

Product Design and Implementation

1. TOF Sensor:

The TOF sensor is used to detect when the plant has grown to its suitable height for harvesting. It will be placed slightly above the pot of ungrown microgreens. The TOF sensor will first sense a distance of 13 cm before the plant has grown. When the plant has grown, the plant will block the TOF sensor, and the TOF sensor will detect a distance within a range of 3.5cm to 5 cm. The servo motor will then be activated, and the microgreens will be dropped which then can be harvested.

2. Light sensor:

The Light sensor is used to monitor if the plant is receiving ample amount of light from the light source above. If the analog value of the light sensor is less than 60lux it will cause the M5 stack to turn red and beep, which will notify the user that there is not enough light for optimal growth.

3. Environment sensor (ENV III):

The Environment Sensor will be used to monitor whether or not the temperature and humidity is optimal for plant growth. The range for temperature must be within 18-24 °C and the range for humidity must be within 50-70%. If the temperature or humidity exceeds the range, The M5 stack will turn red and beep, which will notify the user that there is not enough light for optimal growth.

4. Earth Sensor:

The Earth Sensor will be used to monitor the moisture of the soil to ensure that the plant is receiving ample amount of water for optimal growth. The range for the Earth Sensor to detect is between 300-500 g/cm3. If the moisture the earth sensor detects exceeds the range, the M5 Stack will beep and turn red, notifying the user that there is not enough moisture or too much moisture for optimal growth.

5. Motor:

The Motor will be used to power the bottom door to allow the plant to be dropped onto the conveyor belt to then to be brought to the user to be harvested.

1 / 4

Credits: Ivan, Max, Chen Yin, Zun Ngee

Code

Code

from m5stack import *
from m5ui import *
from uiflow import *
import wifiCfg
from m5mqtt import M5mqtt
import json

import time
import unit

setScreenColor(0x000000)
earth_4 = unit.get(unit.EARTH, unit.PORTB)
env3_3 = unit.get(unit.ENV3, unit.PAHUB1)
pbhub_2 = unit.get(unit.PBHUB, unit.PAHUB0)




wifiCfg.doConnect('Ok noted with thanks', 'password124')

Light = M5TextBox(163, 27, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0)
Humidity = M5TextBox(163, 128, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0)
Moisture = M5TextBox(163, 76, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label3 = M5TextBox(17, 28, "Light", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label4 = M5TextBox(17, 76, "Moisture", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label5 = M5TextBox(15, 128, "Humidity", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label6 = M5TextBox(15, 177, "Temperature", lcd.FONT_Default, 0xFFFFFF, rotate=0)
Temp = M5TextBox(155, 177, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label8 = M5TextBox(49, 218, "STOP", lcd.FONT_Default, 0xFFFFFF, rotate=0)


if wifiCfg.wlan_sta.isconnected():
  m5mqtt = M5mqtt('f55f2957-ce72-4a2a-b9e4-00bc501a2f4e', 'broker.qubitro.com', 1883, 'f55f2957-ce72-4a2a-b9e4-00bc501a2f4e', '173943995150490178251d255b10320f0511a9dc23200534e765f3276794bcc682371cefb18ff4675205b0915ad9a2e76a3', 300)
  m5mqtt.start()
  while True:
    if (env3_3.temperature) > 25 and (env3_3.humidity) < 80 and (earth_4.analogValue) < 50 and (pbhub_2.analogRead(0)) > 600:
      Moisture.setText('Water the plant')
      Light.setText('Light has issue')
      Humidity.setText('On Humidifier')
      Temp.setText('On Aircon')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) > 25 and (env3_3.humidity) < 80 and (earth_4.analogValue) < 50 and (pbhub_2.analogRead(0)) < 600:
      Moisture.setText('Water the plant')
      Light.setText('Light is stable')
      Humidity.setText('On Humidifier')
      Temp.setText('On Aircon')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) > 25 and (env3_3.humidity) < 80 and (earth_4.analogValue) > 50 and (pbhub_2.analogRead(0)) > 600:
      Moisture.setText('Water level stable')
      Light.setText('Light has issue')
      Humidity.setText('On Humidifier')
      Temp.setText('On Aircon')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) > 25 and (env3_3.humidity) < 80 and (earth_4.analogValue) > 50 and (pbhub_2.analogRead(0)) < 600:
      Moisture.setText('Water level stable')
      Light.setText('Light is stable')
      Humidity.setText('On Humidifier')
      Temp.setText('On Aircon')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) > 25 and (env3_3.humidity) > 80 and (earth_4.analogValue) < 50 and (pbhub_2.analogRead(0)) > 600:
      Moisture.setText('Water the plant')
      Light.setText('Light has issue')
      Humidity.setText('Humidity level stable')
      Temp.setText('On Aircon')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) > 25 and (env3_3.humidity) > 80 and (earth_4.analogValue) < 50 and (pbhub_2.analogRead(0)) < 600:
      Moisture.setText('Water the plant')
      Light.setText('Light is stable')
      Humidity.setText('Humidity level stable')
      Temp.setText('On Aircon')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) > 25 and (env3_3.humidity) > 80 and (earth_4.analogValue) > 50 and (pbhub_2.analogRead(0)) > 600:
      Moisture.setText('Water level stable')
      Light.setText('Light has issue')
      Humidity.setText('Humidity level stable')
      Temp.setText('On Aircon')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) > 25 and (env3_3.humidity) > 80 and (earth_4.analogValue) > 50 and (pbhub_2.analogRead(0)) < 600:
      Moisture.setText('Water level stable')
      Light.setText('Light is stable')
      Humidity.setText('Humidity level stable')
      Temp.setText('On Aircon')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) < 25 and (env3_3.humidity) < 80 and (earth_4.analogValue) < 50 and (pbhub_2.analogRead(0)) > 600:
      Moisture.setText('Water the plant')
      Light.setText('Light has issue')
      Humidity.setText('On Humidifier')
      Temp.setText('Temperature is stable')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) < 25 and (env3_3.humidity) < 80 and (earth_4.analogValue) < 50 and (pbhub_2.analogRead(0)) < 600:
      Moisture.setText('Water the plant')
      Light.setText('Light is stable')
      Humidity.setText('On Humidifier')
      Temp.setText('Temperature is stable')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) < 25 and (env3_3.humidity) < 80 and (earth_4.analogValue) > 50 and (pbhub_2.analogRead(0)) > 600:
      Moisture.setText('Water level stable')
      Light.setText('Light has issue')
      Humidity.setText('On Humidifier')
      Temp.setText('Temperature is stable')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) < 25 and (env3_3.humidity) < 80 and (earth_4.analogValue) > 50 and (pbhub_2.analogRead(0)) < 600:
      Moisture.setText('Water level stable')
      Light.setText('Light is stable')
      Humidity.setText('On Humidifier')
      Temp.setText('Temperature is stable')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) < 25 and (env3_3.humidity) > 80 and (earth_4.analogValue) < 50 and (pbhub_2.analogRead(0)) > 600:
      Moisture.setText('Water the plant')
      Light.setText('Light has issue')
      Humidity.setText('Humidity level stable')
      Temp.setText('Temperature is stable')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) < 25 and (env3_3.humidity) > 80 and (earth_4.analogValue) < 50 and (pbhub_2.analogRead(0)) < 600:
      Moisture.setText('Water the plant')
      Light.setText('Light is stable')
      Humidity.setText('Humidity level stable')
      Temp.setText('Temperature is stable')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    elif (env3_3.temperature) < 25 and (env3_3.humidity) > 80 and (earth_4.analogValue) > 50 and (pbhub_2.analogRead(0)) > 600:
      Moisture.setText('Water level stable')
      Light.setText('Light has issue')
      Humidity.setText('Humidity level stable')
      Temp.setText('Temperature is stable')
      rgb.setColorAll(0xff0000)
      speaker.tone(1800, 200)
      wait_ms(200)
    else:
      Moisture.setText('Water level stable')
      Light.setText('Light is stable')
      Humidity.setText('Humidity level stable')
      Temp.setText('Temperature is stable')
      rgb.setColorAll(0x33ff33)
    m5mqtt.publish(str('f55f2957-ce72-4a2a-b9e4-00bc501a2f4e'), str((json.dumps(({'Light':(pbhub_2.analogRead(0)),'Moisture':(earth_4.analogValue),'Humidity':(env3_3.humidity),'Temp.':(env3_3.temperature)})))), 0)
    wait_ms(2)

Urban Farming EEP