Molemi IoT
  • Space farming using food computers for sustainable farming
  • Introduction to Arduino
    • Introduction to Electronics
    • The Breadboard
  • Controlling LEDs with an Arduino
    • The Code
    • Adding a button to control the LEDs
      • The Code
  • Introducing Sensors
    • The CO2 and air quality sensor
    • The Code
      • Explaining the Code
    • Light Intensity Sensor
  • Introducing the NodeMCU
    • Getting Started
      • A simple test for ESP8266
        • The Code
    • A light bulb switch using NodeMCU and the Blynk app
      • Setup Blynk on your Smartphone
      • The Code
    • Controlling a Centurion gate Motor with NodeMCU a 2-channel relay
      • Installing Blynk in Arduino IDE
    • Read and display the water flow sensor on Blynk
      • Setting up Blynk
      • The Code
        • Explaining the code
    • Read and Display temperature sensor readings with NodeMCU.
      • Installing libraries for DS18B20 temperature sensor.
      • Displaying the sensor readings on the serial port
        • Getting temperature readings from different DS18B20 sensors.
          • The Code
            • Display sensor readings on a web server
              • Build the web server
                • Designing and building the web page
                • The Code
    • Display the DHT11 sensor reading on a web server using NodeMCU.
      • Monitoring Room Temp & Humidity using Blynk
      • Installing DHT library on the ESP8266
        • Installing the Asynchronous Web Server library
          • The Code
          • Designing and building the web page
  • Data Science for Farming
    • Getting Started with Colaboratory
    • Introduction to Python for DS using Colab
  • Machine Learning for Farming
  • Molemi Personal Food Computer
    • Bill of Materials
  • Setting up WaziGate on a Raspberry Pi
  • Setting up DHT11 on Raspberry Pi
  • Using Telegram To Control Outputs
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  1. Molemi Personal Food Computer

Bill of Materials

This mPFC will be used for educational purposes.

Material

Description

Datasheet/image

GoldAir mini air cooler

(X1)

Used to cool the environment in the mPFC

DHT11 Humidity and Temperature

sensor

To measure the ambient humidity and

temperature in the grow box.

Submersible temperature

sensor (DS18B20)

To measure the temperature of the

water + nutrient mixture

Mini DC Diaphragm water pump

To pump water from the reservoir into the growing tub

Arduino Uno

For managing the sensors, actuators and

light (Central Nervous System for PFC)

Raspberry Pi 3/4

The brain for the food computer

Raspberry Pi NOIR camera

For taking Infrared images to be used for

NDVI analysis

HD USB camera

For taking images of the grow chamber

2 times 120x120x25 mm 12VDC

Axial fan

Used to provide air circulation and

for cooling the grow chamber

Aluminium slab

Used together with one of the fans to cool

the grow chamber

6 X LED light bulbs

To provide light to the plants in the

grow chamber

6 X light fittings

For the six LED light bulbs

Screw Terminal 4-way

For connecting and keeping the wires

in place.

RIPCORD wire (0.5mm)

red/black (10 meters)

The wire will be used to connect all the

components

CO2 / TEMPERATURE AND AIR QUALITY SENSOR

It will be used to measure the level/amount of CO2

in the growing chamber

Light intensity sensor

Will measure the intensity of light in the grow chamber

Light Spectroscopy

Component

Supplier

Unit Price

Mini DC Diaphragm water pump

R 102.12

GoldAir mini AIR COOLER

R 280.00

DHT11 Humidity and

Temperature sensor

R 75.72

Submersible temperature

sensor

R 66.21

2 times 120x120x25 mm 12VDC Axial fan

R 163.76

(R 327.52)

Raspberry Pi 3/4

R 802.70

Arduino Uno

R 147.20

Arduino Interface shield

R 253.00

Screw Terminal 4-way

R 25.30

RIPCORD wire (0.5mm)

red/black (10 meters)

R 27.90

CO2/ Temperature air

quality sensor

shorturl.at/kBEQ5

R 301.29

Light Intensity sensor

R 112.70

Light Spectroscopy sensor

R 1,492.70

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Last updated 5 years ago

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DS18B20 Datasheet
DC Water pump
Arduino Uno
co2 sensor
Adafruit light intensity
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