African Dish Guide - Hardware Setup

Overview

This document outlines the steps to set up the hardware components for the African Dish Guide application, which uses an ESP-WROOM-32 microcontroller and a DHT11/DHT22 sensor to monitor temperature and humidity for cooking traditional African dishes.

Components Required

• ESP-WROOM-32 microcontroller
• DHT11 or DHT22 temperature and humidity sensor
• Breadboard and jumper wires
• USB cable for powering the ESP32
• (Optional) Resistor (4.7kΩ for DHT11/DHT22)

Hardware Setup Steps

Step 1: Connect the DHT Sensor

1. Identify the DHT Sensor Pins:

   • VCC (Power)
   • GND (Ground)
   • Data (Signal)

2. Wiring the DHT Sensor to the ESP32:

   • Connect the VCC pin of the DHT sensor to the 3.3V pin on the ESP32.
   • Connect the GND pin of the DHT sensor to a GND pin on the ESP32.
   • Connect the Data pin of the DHT sensor to a digital GPIO pin on the ESP32 (e.g., GPIO 21).

   (Optional) If using a resistor, connect a 4.7kΩ resistor between the VCC and Data pins of the DHT sensor.

Step 2: Set Up the ESP-WROOM-32

1. Install the ESP32 Board in Arduino IDE:

   • Open the Arduino IDE.
   • Go to File > Preferences.
   • Add the following URL to the "Additional Board Manager URLs": https://dl.espressif.com/dl/package_esp32_index.json.
   • Go to Tools > Board > Board Manager, search for "ESP32", and install it.

2. Select the ESP32 Board:

   • Go to Tools > Board, and select the appropriate ESP32 board (e.g., ESP32 Dev Module).

3. Connect the ESP32 to Your Computer:

   • Use a USB cable to connect the ESP32 to your computer.

Step 3: Upload the Code

1. Download the Application Code:

   • Obtain the source code for the African Dish Guide application (from the repository or your local files).

2. Open the Code in Arduino IDE:

   • Open the main code file in the Arduino IDE.

3. Select the Correct Port:

   • Go to Tools > Port, and select the port corresponding to your ESP32.

4. Upload the Code:

   • Click on the upload button in the Arduino IDE to upload the code to the ESP32.

Step 4: Test the Setup

1. Open the Serial Monitor:

   • Go to Tools > Serial Monitor in the Arduino IDE.
   • Set the baud rate to 115200 to view the sensor data and confirm that the DHT sensor is functioning correctly.

2. Access the Web Application:

   • Open a web browser and navigate to the IP address assigned to the ESP32 (displayed in the Serial Monitor) to access the African Dish Guide web application.

Conclusion

You have successfully set up the hardware for the African Dish Guide application. Follow the on-screen instructions in the web application to start cooking traditional African dishes with the help of real-time sensor monitoring.