View source for KS0413 keyestudio ESP32 Core Board


[[image:0413图片1.png|thumb|550px|right|Keyestudio ESP32 Core Board (Black and Eco-friendly)]]

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==Description==
This keyestudio ESP32 core board is a Mini development board based on the ESP-WROOM-32 module. <br>
The board has brought out most I/O ports to pin headers of 2.54mm pitch. These provide an easy way of connecting peripherals according to your own needs.<br>
When it comes to developing and debugging with the development board, the both side standard pin headers can make your operation more simple and handy.<br>

The ESP-WROOM-32 module is the industry's leading integrated WiFi + Bluetooth solution with less than 10 external components. <br>
It integrates antenna switch, RF balun, power amplifiers, low noise amplifiers, filters and power management modules. <br>
At the same time, it also integrates with TSMC's low-power 40nm technology, so that power performance and RF performance are safe and reliable, easy to expand to a variety of applications.<br>

<br>[[Image:0413图片2.png|500px|frameless]]<br>

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==Technical Details==
* Microcontroller: ESP-WROOM-32 module 
* USB to Serial Port Chip: CP2102-GMR
* Operating Voltage: DC 5V
* Operating Current: 80mA (average)
* Current Supply: 500mA (Minimum)
* Operating Temperature Range: -40℃ ~ +85℃ 
* WiFi mode: Station/SoftAP/SoftAP+Station/P2P
* WiFi protocol: 802.11 b/g/n/e/i (802.11n, speed up to 150 Mbps
* WiFi frequency range: 2.4 GHz ~ 2.5 GHz
* Bluetooth protocol: conform to Bluetooth v4.2 BR/EDR and BLE standards
* Dimensions: 55mm*26mm*13mm
* Weight: 9.3g

<br>[[Image:0413图片3.png|600px|frameless]]<br>
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<br>
==Element and Interfaces==
Here is an explanation of what every element and interface of the board has:
<br>[[Image:0413图片4.png|800px|frameless]]<br>

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==Specialized Functions of Some Pins==
<br>[[Image:0413图片5.png|800px|frameless]]<br>
<br>[[Image:0413图片6.png|800px|frameless]]<br>

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==Detailed Using Methods are as follows:==
<br>
===Step1| Install the Arduino IDE===
When programming the control board, first you should install the Arduinosoftware and driver. <br>
You can download the different versions for different systems from the link below:  <br>
https://www.arduino.cc/en/Main/OldSoftwareReleases#1.5.x
<br>
This control board is compatible with the Arduino 1.8.7 or latest version. <br>
So next we will download the Arduino 1.8.7 software to test the keyestudio ESP32 core board.<br>
<br>[[Image:0413图片7.png|800px|frameless]]<br>
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In this Windows system page, there are two options. One is Windows version, the other is Windows Installer. <br>
For simple Windows version, you can download the software directly, do not need to install, just directly use the software after unzip the file.
<br>[[Image:0413图片8.png|800px|frameless]]<br>
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Next, we click the Windows, pop up the interface as below.
<br>[[Image:0413图片9.png|800px|frameless]]<br>
<br>[[Image:0413图片10.png|800px|frameless]]<br>
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Click '''JUST DOWNLOAD'''.<br>
Downloaded well the '''arduino-1.8.7-windows.zip package''' to your computer, you can direct to unzip the package.<br> 
Open the Arduino-1.8.7 folder, you should get it as follows.<br>
<br>[[Image:0413图片11.png|800px|frameless]]<br>
<br>[[Image:0413图片12.png|800px|frameless]]<br>
<br>
Click the icon of ARDUINO software to open it. This is your Arduino.
<br>[[Image:0413图片13.png|800px|frameless]]<br>

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===Step2| Installing the Driver===
The USB to serial port chip of this control board is '''CP2102-GMR'''. So you need to install the driver for the chip. <br>
You can click the driver tool download link:<br>
https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers 

<br>[[Image:0413图片14.png|800px|frameless]]<br>
<br>
<br>
It includes different drivers for different computer’s systems. Download and install the driver according to your computer’s system.<br>
For example, we download the driver for Windows 7. Get the compression package of CP210x_Windows_Drivers <br>
<br>[[Image:0413图片15.png|800px|frameless]]<br>
<br>[[Image:0413图片16.png|600px|frameless]]<br>
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Then extract the compression package; you should see the application to install.<br>
<br>[[Image:0413图片17.png|800px|frameless]]<br>
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The driver software installation is very simple. Just select the driver application as you like.<br>
Click to '''.exe''' package to install the driver. Click “Next”.<br>
<br>[[Image:0413图片18.png|800px|frameless]]<br>
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Click to select “I accept this agreement” and click “Next”.<br>
<br>[[Image:0413图片19.png|800px|frameless]]<br>
<br>[[Image:0413图片20.png|800px|frameless]]<br>
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Wait for the installation complete. Finally click “Finish” to close the window.<br>
<br>[[Image:0413图片21.png|800px|frameless]]<br>


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===Step3| Building ESP32 Environment ===

At first, open the Arduino-1.8.7 folder, you will see the hardware folder; 
<br>[[Image:0413图片22.png|800px|frameless]]<br>

Then open the hardware folder and add a new folder, remember to name it '''espressif''' shown below.

<br>[[Image:0413图片23.png|800px|frameless]]<br>

After that, unzip the esp32 compression package we provided, and copy and paste esp32 folder inside the '''espressif''' folder.
<br>[[Image:0413图片24.png|800px|frameless]]<br>

So inside the '''espressif''' folder should see the esp32 folder as below. <span style=color:red>Note that the folder should not name a type.<br>
<br>[[Image:0413图片25.png|800px|frameless]]<br>

Now, click to enter the esp32 folder and you can see the '''tools''' folder below. 

<br>[[Image:0413图片26.png|800px|frameless]]<br>

Enter the '''tools''' folder and click to run the '''get.exe''' application as an administrator. <br>
<span style=color:red>(But the precondition is that you have already installed the Python)<br>
<br>[[Image:0413图片27.png|800px|frameless]]<br>

When run the '''get.exe''' application, ensure that your network is unblocked and wait for the program download. <br>
Done downloading, the following window will automatically close.
<br>[[Image:0413图片28.png|800px|frameless]]<br>
<br>[[Image:0413图片29.png|800px|frameless]]<br>

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===Step3|Arduino IDE Setting and Toolbar===

Double-click the icon of Arduino software downloaded to open the IDE.<br>
[[Image:0413图片30.png|100px|frameless]]<br>
This is your Arduino 1.8.7 interface.<br>
<br>[[Image:0413图片13.png|800px|frameless]]<br>

<span style=color:red>('''Note:''' if the Arduino software loads in the wrong language, you can change it in the preferences dialog. See [https://www.arduino.cc/en/Guide/Environment-Languages the environment page] for details.)</span><br>

<br>
The functions of each button on the Toolbar are listed below: <br>
<br>[[Image:IDE.png|600px|frameless]]<br>

{| class="wikitable" cellpadding="1" cellspacing="1"
|-
!scope="row" |[[Image:IDE 1.png|600px|frameless]] Verify/Compile
| Check the code for errors
|-
!scope="row" |[[Image:IDE 2.png|600px|frameless]] Upload
| Upload the current Sketch to the Arduino
|-
!scope="row" |[[Image:IDE 3.png|600px|frameless]] New
| Create a new blank Sketch
|-
! scope="row" |[[Image:IDE 4.png|600px|frameless]] Open
| Show a list of Sketches
|-
! scope="row" |[[Image:IDE 5.png|600px|frameless]] Save
| Save the current Sketch
|-
! scope="row" |[[Image:IDE 6.png|600px|frameless]] Serial Monitor
| Display the serial data being sent from the Arduino
|-
|}

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Attach your esp32 core board to your computer with the USB cable.
<br>[[Image:0413图片32.png|600px|frameless]]<br>

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Check that the “Board Type”and “Serial Port” are set correctly.<br>
Click to open the “Tools”, for “Board”, scroll to select the ESP32 Dev Module. <br>
<br>[[Image:0413图片33.png|800px|frameless]]<br>

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<span style=color:red>Select well the correct board and then should set the detailed information as shown below.<br>
<br>[[Image:0413图片34.png|800px|frameless]]<br>

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Pay close attention to select the proper COM port. (Arduino driver installed well, you are supposed to see the corresponding port.) <br>
<span style=color:red> Check out the COM port in the Device Manager of your computer’s control panel. </span><br>
<br>[[Image:0413图片35.png|800px|frameless]]<br>

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Here we can know the COM port is COM 8. Then select the Port COM 8 in the Arduino Tools.<br>
<br>[[Image:0413图片36.png|800px|frameless]]<br>


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===Step5| Upload the Code===
Paste and copy the source code below to Arduino IDE.<br>
<span style=color:red> '''Special Note:''' when compile and upload the source code, hold the BOOT button on the ESP32 board until upload well the code.<br>

<pre>
/*
 *  This sketch demonstrates how to scan WiFi networks.
 *  The API is almost the same as with the WiFi Shield library,
 *  the most obvious difference being the different file you need to include:
 */
#include "WiFi.h"

void setup()
{
    Serial.begin(115200);

    // Set WiFi to station mode and disconnect from an AP if it was previously connected
    WiFi.mode(WIFI_STA);
    WiFi.disconnect();
    delay(100);

    Serial.println("Setup done");
}

void loop()
{
    Serial.println("scan start");

    // WiFi.scanNetworks will return the number of networks found
    int n = WiFi.scanNetworks();
    Serial.println("scan done");
    if (n == 0) {
        Serial.println("no networks found");
    } else {
        Serial.print(n);
        Serial.println(" networks found");
        for (int i = 0; i < n; ++i) {
            // Print SSID and RSSI for each network found
            Serial.print(i + 1);
            Serial.print(": ");
            Serial.print(WiFi.SSID(i));
            Serial.print(" (");
            Serial.print(WiFi.RSSI(i));
            Serial.print(")");
            Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN)?" ":"*");
            delay(10);
        }
    }
    Serial.println("");

    // Wait a bit before scanning again
    delay(5000);
}
</pre>

<br>
Then click verify button to check the errors. If compiling successfully, the message "Done compiling." will appear in the status bar.<br>
<br>[[Image:0413图片37.png|800px|frameless]]<br>

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After that, click the “Upload” button to upload the code. If the upload is successful, the message "Done uploading." will appear in the status bar.<br>
<span style=color:red> '''Special Note:''' when compile and upload the source code, hold the BOOT button on the ESP32 board until upload well the code.<br>
<br>[[Image:0413图片38.png|800px|frameless]]<br>

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Done uploading the code to your board, open the serial monitor and set the baud rate to '''115200'''. <br>
You should be able to see the WIFI information on the pop-up window.<br>
<br>[[Image:0413图片39.png|800px|frameless]]<br>
<br>[[Image:0413图片40.png|800px|frameless]]<br>
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==More Resources==
* '''You can download the PDF file from the link:'''<br>
https://drive.google.com/open?id=1qZ8MGRd-KwlD4wXACALr3P6Vc-4Xib2N

* '''ARDUINO Software:'''<br>
https://www.arduino.cc/en/Main/OldSoftwareReleases#1.5.x

* '''Download the Driver:'''<br>
https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers 


<br>
== Buy From ==
*[https://www.keyestudio.com/2019new-keyestudio-esp32-wroom-32d-module-core-board-wi-fibtble-mcu-for-arduino-p0545-p0545.html   '''official website''' ]

*[https://www.aliexpress.com/store/product/2019New-Keyestudio-ESP32-WROOM-32D-Module-Core-Board-Wi-Fi-BT-BLE-MCU-For-Arduino/1452162_32998131047.html?spm=2114.12010615.8148356.1.36f88f3fbq658A  '''Shop on Aliexpress''' ]



  [[Category: Arduino Board]]