2. Configure the Arduino
2.1 Install Driver for KEYESTUDIO ESP32 PLUS Board
KEYESTUDIO ESP32 PLUS Board a universal WIFI plus Bluetooth development board based on ESP32, integrated with ESP32-WOROOM-32 module and compatible with Arduino.
It has a hall sensor, high-speed SDIO/SPI, UART, I2S as well as I2C. Furthermore, equipped with freeRTOS operating system, which is quite suitable for the Internet of things and smart home.
Specifications
Voltage: 3.3V-5V
Current Output: 1.2A(maximum)
Maximum power Output: 10W
Working temperature: -10℃~50℃
Dimension: 69 * 54 * 14.5mm
Weight: 25.5g
Environmental protection attributes: ROHS
Install driver
Connect the ESP32 board to the computer and wait for Windows to begin its driver installation process. Often CH340 driver will be automatically installed by your system when using Arduino. You can check the Device Manager or the port of the Arduino IDE to see if the driver is successfully installed.
If the CH340 driver is not installed automatically, we need to install it manually.
Click to download Windows CH340 driver
Open the Device Manager by right clicking “My PC” and selecting Properties. Look under Other devices. You should see an open port named USB Serial
Right click on the “USB Serial” and choose the “Update Driver” option.
Choose the “Browse my computer for Driver software” option.
Select the driver file named “usb_ch341_3.1.2009.06”, located in the Driver Folder of the tutorial package.
Driver successfully installed.
Device Manager will automatically refresh. Look under Ports (COM & LPT). You should see an open port named “USB-SERIAL CH340(COM3)”
Click Tools>Port at Arduino IDE, you can find the same COM port as the CH340 driver in the device manager.
2.2 Add Libraries to Arduino IDE
Why Use Libraries?
Libraries are incredibly useful when creating a project of any type. They make our development
experience much smoother, and there almost an infinite amount out there. They are used to
interface with many different sensors, RTCs, Wi-Fi modules, RGB matrices and of course with other
components on your board.
Including a Library in the sketch
To use a library, you first need to include the library at the top of the sketch.If you find a line of code in the format of #include "library name" at the beginning of the code when using our code, it means that you need to add this library file to arduino IDE first before you can successfully upload this code.
To make the smart farm kit work, we will need to add these library files to the Arduino IDE. You can find them in the tutorial package.
Importing a .zip Library
In the menu bar, go to Sketch > Include Library > Add .ZIP Library… You will be prompted to select the library you want to add.
Navigate to the .zip file’s location and open it.
You may need to restart the Arduino IDE for the library to be available. After successfully installing the library file, you will see them in the list.
2.3 Configure the development environment for ESP32
Before using Arduino IDE to program the smart farm, you need to configure the Arduino IDE, select the correct board type (ESP32 Dev Module) for the ESP32 Plus board, and select the COM port that is assigned in the device manager.
There is no option for ESP32 in Arduino’s default board list,so we need to install it manually.
Click File > Preferences. Copy the link of ESP32 board (https://espressif.github.io/arduino-esp32/package_esp32_index.json) into the Additional boards manager URLs, and click OK.
Click the icon of “Board Manager” in the upper left corner.
Search for ESP32 in the search box and install the latest version. You can check its process in the lower right corner. During installation, keep the network stable. If the installation fails, repeat the above steps.
Note: We adopt ESP32 version 3.1.3 in this tutorial. Please keep it consistent to avoid code incompatibilities.
installation is complete:
Click Tools> Board > esp32 ,and choose the EPS32 Dev Module
Choose COM port. You may check your port number at Device Manager. If there are many COM ports, unplug the cable of board to see which port disappears. Then that one is the port ready to use. If there is no COM port, please check whether driver is installed.
Herein, our COM port is COM3. Click “Tools” → “Port” → “COM3”.
