Web server esp32. You simply need to include the time.

In the Image URL field, enter your ESP32-CAM IP address. ウェブに表示したりすることが普通にできるはずですね。 色々、楽しみです。 This is hopefully a simple example to demonstrate how to upload a file to an ESP32 using the AsyncWebServer, saving the files on to SPIFFS and having a simple upload progress bar displaced. A new Terminal window should open on your project path. あるいは、ESP32に接続しているセンサー類からデータを取得して. Connect the GND to GND. ESP32 Wi-Fi. Download the latest release version of CircuitPython for this board. Open your Home Assistant dashboard and go to the more Settings menu. Then, upload the code to your ESP32 board. Using an attached DS18B20 temperature sensor, you can easily check the current temperature by using your smartphone or PC to visit the web page served by the ESP32. La mejor librería para crear servidores Web con Nuestro ESP8266 o ESP32, que nos permite crear pagina web que podemos usan desde nuestro pc, tables o Movil. Esattamente, creeremo un Web Server che gira su un processore ARM! Gli ESP32 sono processori AR Feb 25, 2021 · 1. In the setup section, serial communication is initially started. Reply Mar 31, 2023 · As Bibliotecas de Servidor Web Assíncrono ESP32. AsyncWebServer server(80); Nov 18, 2021 · Go to the files> examples>examples of Nose32s>WiFi and from the side menu, choose “SimpleWifiServer". Click Install button to install ESPAsyncWebServer library by lacamera. Apr 27, 2023 · Begin the ESP32 web server setup by installing the Arduino 2. Now we can use it with the ESP32. Instead of LEDs, you can use this project to control DC motors or other actuators that require a PWM signal. uf2 file onto FTHRS2BOOT drive ( more info here) After a moment CIRCUITPY drive will show up. ESP32 HTTP GET POST. The following code gets date and time from the NTP Server and prints the results on the Serial Monitor. Here's how: Connect the batteries to the L298N module as shown. #include <WebSerial. Connect the 12V pin on the L298N module to the Vin pin on the ESP32 to power it directly from batteries. AT+WEBSERVER=1,80,25. In this tutorial we will check how to setup a HTTPS web server on the ESP32, using the Arduino core. You can also read our other Guide to control a Relay Module with ESP8266. The ESP32-CAM will be programmed using Arduino IDE. Apr 7, 2019 · ESP32: HTTPS web server. The sliders control the duty cycle of different PWM channels to control the brightness of multiple LEDs. Drag the CircuitPython . Server-Sent Events allow a web page (client) to get updates from a server. 0 IDE. Learn setup, coding, and interaction with a client device. 85 forks Once you have done that you can open the sketch in the IDE by going to the esp32-cam-webserver sketch folder and selecting esp32-cam-webserver. Similarly, it will receive HTTP requests from a Change the name of this folder from ESP32-Arduino-Servo-Library-Master to ESP32_Arduino_Servo_Library. The main components are: The asynchronous WEB Server. Press the “ + File ” button to create a new upload. Web server… PlatformIO is an open source ecosystem for IoT development with cross platform build system, library manager and full support for Espressif ESP8266/ESP32 development. By the end of this guide, you will have a solid understanding of how to harness the power of the ESP32 microcontroller to create your own web server. Go to Sketch > Show Sketch Folder, and create a folder called data. Two 470uf capacitors are connected at the input and output sides of the voltage regulator. Now when you will type this IP address in the browser, the browser will send a request to the webserver for connection. Select Format as shown in figure below. Now, you need to upload that file using the ElegantOTA page. Step 2: Web server runs a PHP script that handles the request from ESP32. In this guide, we'll explore the process of programming the ESP32 to function as a web server, allowing you to access temperature data via a web interface. Open Configure UI: Add a new card to your Dashboard: Pick a card of the type Picture. With the three items created, edit the upload. Then, click the “ +Folder ” button to create the Uploads folder. Simple Ethernet WebServer, HTTP/HTTPS Client wrapper library for ESP32 boards using W5500 with LwIP Ethernet library. Following are detailed steps to use the API exposed by HTTP Server: httpd_start(): Creates an instance of HTTP server, allocate memory/resources for it depending upon the specified configuration and outputs a handle to the server instance. We will create APIs that will be used to communicate with ESP32 using GET and POST requests. I suddenly removed the battery powering the Esp32 server. Web Servers. When it is installed on ESP32 board, you must activate the Sermig_Condor WiFi service and access the IP address 192. ESP32 LoRa. Aug 9, 2018 · Enter the password you’ve defined earlier in the code. Please note that enabling this component will take up a lot of memory and may decrease stability, especially on ESP8266. Aug 10, 2021 · Finally, the WebSerial library provides easy methods to build the web-based serial monitor. HTTP POST Web APIs. h>. Introduction to ESP32 and Web Server If you're not familiar with ESP32 and Web Server (including pinout, how it works, and programming), you can learn about them through the following tutorials: ESP32 - Web Server Trong video này, các bạn hãy cùng tìm hiểu cách xây dựng web server cơ bản trên ESP32. Create a variable called LED for the built-in LED on GPIO 2. If you’re familiar with ESP-IDF, you can take a look at the documentation on the following link: The extra parameters depend on the * HTTPAuthMethod mode: * * BASIC_AUTH enteredUsernameOrReq contains the username entered by the user * param [0] password entered (in the clear) * param [1] authentication realm. Web Server Component¶. Mar 10, 2022 · Double-click the Feather board reset button to get to bring up the bootloader FTHRS2BOOT drive in your computer File Explorer/Finder. The HTML content (including HTML, CSS, and Javascript) for each page is kept separately in its own file on the Arduino IDE. The server's resources are defined through handler and middleware functions, giving an easy In this tutorial, we will learn how to build a rest API web server using ESP32 that implements different REST APIs. You’ll be able to control the robot using a web server that displays a video streaming of what the robot “sees”. Go to your ESP IP address followed by /update. Feb 7, 2022 · Web server con DNS e Wifi su ESP32 con Arduino IDE - Video 645Amazon:- ESP 32 https://amzn. Open the Library Manager by clicking on the Library Manager icon on the left navigation bar of Arduino IDE. We have a similar tutorial but using the BME680 environmental sensor. Change the SSID and password according to your choice. With this project you’ll learn: Update the sensor readings automatically Jul 19, 2019 · Go to Sketch > Show Sketch Folder, and create a folder called data. Elevate IoT skills! Aug 4, 2019 · To take readings from the BME280 sensor module we’ll use the Adafruit_BME280 library. ESP32 MQTT. ESP board will host the HTML and CSS file in the form of strings and responds to a web client request with these HTML and CSS. begin () function. Copy to clipboard. When asked for a password, enter LetMeInPlz (or whatever you set the AP password to in the Arduino code). ESP32 ESP-NOW. The “/update” path handles firmware updates via POST requests. com/esp32-web-server-arduino-ide/In this project you’ll create After inserting your network credentials, save the code. Press the encoder (EN) button of the ESP32. After that, we created three rows to display values of temperature and humidity. Jan 6, 2018 · We will first open a serial connection and then connect the ESP32 to the WiFi network. You should upload the file with the ino. The folder where your sketch is saved should open. php file. The Library Manager should open. Insert the microSD card in your computer. The IP address of the ESP32 is printed to the serial monitor, and the web server is started using Sep 1, 2022 · September 1, 2022. Copy this folder to the Arduino library folder. The ESP32 will be programmed using Arduino IDE. This tutorial instructs you how to use ESP32 to make HTTP request to web server, API, or Web service. Output Web Server. This tutorial shows how to build a web server weather station with the ESP32 to display sensor readings from the BME680 environmental sensor: gas (air quality), temperature, humidity and pressure. Jun 18, 2023 · Learn how to control a servo motor using an ESP32 microcontroller and a web server. The WebServer supports HTTP (S) GET and POST requests, provides argument parsing, handles one client at a time. Insert the password you’ve defined earlier. Jun 16, 2022 · The source included is a folder with all data needed. h library in your code. h library. Custom properties. 1) Create a folder on your computer where you want to save your Firebase project—for example, Firebase-Project. Apr 1, 2023 · The web server is mobile responsive and can be accessed with any devices that is a browser on the local network. Neste post, construiremos um WebServer utilizando uma biblioteca chamada ESPAsyncWebServer, feita pelo desenvolvedor me-no-dev. Config By default the sketch assumes you have an AI-THINKER board, it creates an AccessPoint called ESP32-CAM-CONNECT and with the password InsecurePassword ; connect to that and then browse to http Apr 1, 2024 · When a client, like a web browser in a mobile phone, sends a request for that web page over HTTP, the web server in ESP32 must respond with the web page. For testing purposes, we will use a self signed certificate, generated on the fly by the ESP32. The image above is the design of our project. Go to File > Open Folder… and select the folder you’ve just created. The Role of JavaScript. We will connect the ESP32 to the Wi-Fi network, and then ESP32 will show you an IP address at which the server will be created. Install PlatformIO IDE. Apr 8, 2020 · ESP32 Relay Module Web Server; MicroPython Programming with ESP32 and ESP8266; I hope you liked this project. 4. Nov 4, 2022 · The ESP32 is a very powerful microcontroller with integrated WiFi, So let's use it to make an ESP32 Web Server to control some devices using WiFi. Command. Communication. 4. Finally, with the server. Learn to Create ESP32 WebSocket Server in Arduino IDE along with code, detailed code explanation and demonstration. php file and a new gallery. Aug 15, 2021 · ESP32-WROOM-32EでWebServerを実装する. Use Wokwi for Visual Studio Code to simulate this project. It is as if the box was dropped and the battery was out of the box and the Esp32 likes were out of power. So connect their VCC to 3. Aug 29, 2021 · Oggi andremo a vedere come creare un Web Server su un ESP32. Por isso, é necessário baixa-la como um arquivo . This sketch should contain the code to create the OTA Web Updater, so that you are able to upload code later using your browser. The novelty here has been the combining of these two technologies via OpenCV. Make sure you have the right board and COM port selected. In detail, You will learn: How to use ESP32 to make HTTP request (GET and POST) How to include the sensor's data into HTTP request. bin extension. If you like ESP32, you might consider enrolling in our course “Learn ESP32 with Arduino IDE“. Dec 15, 2022 · ESP32 Deep Sleep. ESP32 Camera, with its small size, wi-fi, high tech and low-cost capability promises to be an interesting new front-end image-capture capability for OpenCV Jan 9, 2020 · Motor Esp32 is activated with the data I send from the server. Server-Sent Events. While Esp32 server and Esp32 client are communicating, the engine is active. Additionally, when the client performs any operations, like clicking on a button, the server should respond with appropriate actions (like turning ON / OFF an LED). Jul 1, 2022 · Learn to implement a web server on ESP32 using ESP-IDF framework: how to create a web server, register URI handlers and send back responses to clients. Add a jumper labeled 5VEN (yellow circle on the diagram). ESP32_HTTPS_Server. 1 by a browser. 170 stars Watchers. bin files will be created under the project folder. ESP32 web server example: control 2 LEDs from a web page hosted on the ESP32. Step 3: PHP script extracts the data from the HTTP request, processes the data, and then interacts with MySQL database. Apr 2, 2023 · In the setup () function, the ESP32 connects to the Wi-Fi network using WiFi. May 28, 2021 · This tutorial shows how to build an ESP32 web server that displays a web page with multiple sliders. Next we will configure a route in the “ /html ” path, which will listen to incoming HTTP GET requests. This article provides a step-by-step guide on setting up the ESP32 as a web server, connecting a servo motor, and utilizing the web interface to remotely control its movements. After the connection, we will print the ESP32 IP on the network, so we can later reach the server using a web browser. Alternative ESP32 Webserver implementation for the ESP32, supporting HTTPS and HTTP. WiFi. 3V VCC. To run a simple server, we will use the example sketch included in the ESPAsyncWebServer library. This involves installing the ESP32 board definitions in the Arduino IDE and connecting the ESP32 to your computer via a USB cable. As shown above, there are 3 possible ways to access the ESP32’s web server in this example sketch: The root path “/” serves the loginIndex page. After starting the web sever according to the above commands, you can turn on the Wi-Fi connection function on your STA device, and connect it to the softAP of the ESP32: Connection to the ESP32 AP. Search for “ adafruit bme280 ” on the Search box and install the library. 2) Open VS Code. You can also access our free ESP32 resources here. php file: May 21, 2024 · In this project, you’ll learn how to build an asynchronous ESP32 web server with the DHT11 or DHT22 that displays temperature and humidity using Arduino IDE. Press [ Ctrl] + [ Shift] + [ P] on Windows or [ ⌘] + [ Shift] + [ P] on MacOS to open the command palette. It provides HTTP (S), MQTT (S) Client and supports WebServer serving from LittleFS/SPIFFS. Inside that folder you should save the HTML file created previously. Note: make sure your ESP32 and mobile are connected to the same router/server, if they are connected to the same router or server then only you will be able to visible the web page. js. Nov 10, 2020 · ESP32 Web Server – Arduino IDE. It was based on the example provided by the time. zip e instala-la manualmente. Apr 3, 2018 · WebページからESP32に接続したサーボを制御したり、指示を送ったり. The web server will be able to control the onboard LED of ESP32 connected with GPIO2. It will create a new project with the code in it to run the ESP32 (connected to your system) as a server. A new window pops up. begin (ssid, password); The ESP32 code functions by creating both a web server and a WebSocket Server. ESP32 BLE Client-Server. Step 1: ESP32 includes the data to HTTP/HTTPS request and send the request to the Web server. Upload the following code to your receiver board – the code is prepared to receive readings from two different boards. One intriguing application is the creation of a web server. It is possible to program the ESP32 and ESP8266 boards using VS Code with the PlatformIO IDE extension. In the menu, click File → Examples → ESP Async WebServer → simple_server. Remove two jumpers from ENA and ENB pins to 5 volts on the L298N module. Inside the data folder is where you should put the images you want to display on the web server. This can be used to automatically display new sensor readings on the web server page when they are available. ESP32 WebSocket. Here’s a link to the library: esp32_https_server library. The HTTP Server component provides an ability for running a lightweight web server on ESP32. The readings are updated automatically on the web server using Server-Sent Events (SSE). Now lets come to Arduino programming part of this project of displaying sensor values on the Web server using ESP32. ESP32 Text Messages. After the connection is established The HTTP Server component provides an ability for running a lightweight web server on ESP32-S3. Now open the Arduino IDE; the library for servos will be there. To send and receive data from ESP32 through REST APIs, we will use the postman application. Now you need to upload the HTML file to the ESP32 or ESP8266 filesystem. The web server page should load: To connect to the access point on your computer, go to the Network and Internet Settings and select the “ ESP32-Access-Point “. Go to My Computer and right click on the SD card. The tests shown on this tutorial were performed using an ESP32 board from DFRobot. Dec 9, 2022 · Nevertheless, there is another library that provides easy methods to build an ESP32 HTTPS web server, including an example that generates certificates on the fly. Before we delve into the implementation, we need to set up the ESP32 development environment. Build an ESP32 LED web server for remote control of LEDs via Wi-Fi. Sep 20, 2022 · Para demonstrar a tecnologia do Wi-Fi funcionando juntamente com o Esp32, criaremos um projeto que recolherá dados dos sensores e iremos enviá-los para um Web Server conectado à nossa rede local. begin() function, the web server is initialized. Follow the next steps to install the PlatformIO IDE extension. Select FAT32, press Start to initialize the formatting process and follow the onscreen instructions. ESP32 Email. WebServerライブラリでWebサーバーを実装するとクライアント（スマホなど）のリクエストに対応したレスポンスを返信する事ができます。. Since we are not running a captive portal, we will need to specifically browse to the IP address of the ESP32. 29 watching Forks. Mar 27, 2023 · Open the “ Advanced ” tab and select “ File Manager “: Then, select the public_html option. We would like to show you a description here but the site won’t allow us. Jun 24, 2021 · Build a Wi-Fi remote controlled car robot with the ESP32-CAM. Inside that folder, you should save the HTML, CSS, and JavaScript files. Follow the next steps to install the library in your Arduino IDE: Open your Arduino IDE and go to Sketch > Include Library > Manage Libraries. May 29, 2023 · Now let us begin with the designing of IoT Based Patient Health Monitoring on ESP32 Web Server. Go to Sketch > Export Compiled Binary. So the circuit digram for interfacing MAX30100, DHT11 & DS18B20 with ESP32 is given below. Nov 10, 2023 · While HTML provides structure and CSS adds style, the integration of JavaScript introduces a dynamic dimension to your ESP32 web server. It can be used to run an HTTP or HTTPS server, or both in parallel. Boards compatibility: this project requires Sep 24, 2020 · Installing PlatformIO IDE Extension on VS Code. All the sensor can work at 3. Building. 3) Go to Terminal > New Terminal. Controlling a relay with the ESP32 is as easy controlling any other output, you just need to send HIGH and LOW signals as you would do to control an LED. PWM Slider Web Sep 9, 2019 · Using your phone or computer, search for open WiFi access points and connect to the one named ESP32-AP. It works on the popular host OS: Mac OS X, Windows, Linux 32/64, Linux ARM (like Raspberry Pi, BeagleBone, CubieBoard). The readings are updated automatically using Server-Sent Events and the 3D representation is handled using a JavaScript library called three. With your sketch open, go to Sketch > Show Sketch Folder. Search “ESPAsyncWebServer”, then find the ESPAsyncWebServer. The library provides TLS support and simultaneous connections. You simply need to include the time. WebServer server (80); This command defines an object called the server from the webserver class. The ESP32's web server responds by transmitting the content of the webpage (HTML, CSS, JavaScript). Esp32 server is battery powered in a box. If you have any questions, post a comment below and we’ll try to get back to you. Sep 23, 2021 · 1) Creating a Project Folder. The ESP32 is a powerful microcontroller with built-in Wi-Fi and Bluetooth capabilities, making it suitable for IoT (Internet of Things) projects that require connectivity to the Internet. Webサーバー Create a web server, port: 80, connection timeout: 25 s (default maximum is 60 s). Get your The HTTP Server component provides an ability for running a lightweight web server on ESP32-S3. Install the “esp32 by Espressif Systems” board Jun 11, 2024 · ESP32 Async Web Server – Control Outputs; ESP Web Server – Control Outputs with Timer; ESP32 DHT11/DHT22 Web Server – Temperature and Humidity; Learn more about the ESP32 with our resources: Learn ESP32 with Arduino IDE (eBook + Video Course) More ESP32 Projects and Tutorials… Thanks for reading. Feb 4, 2024 · Step-by-Step Guide to Implementing a Web Server on ESP32. About. The process unfolds as follows: When you input the ESP32's IP address into a web browser, a request is made for the webpage (User Interface) from the ESP32. Initialize an AsyncWebServer object on port 80 to set up the web server. Jun 16, 2024 · Adding ESP32-CAM to Home Assistant. ino. ? Enter the SSID and the password of your router in these two lines. O foco dos dados será nas condições ambientes, e entre eles vamos recolher informações relacionadas à temperatura e pressão atmosférica. In this tutorial, we will build an ESP32 web server using ESP-IDF. ESP32 Web server Home Automation Circuit Diagram: J1 is the Dc female power jack and this is where we connect a 12v adaptor, battery or a solar panel. The output of the voltage regulator is connected with the 5v pin of the ESP32 module and the ground of Select the Arduino Nano ESP32 board and its corresponding COM port. Oct 16, 2020 · In this tutorial you’ve learned how to use Server-Sent Events with the ESP32. Stars. Mar 19, 2020 · To get date and time with the ESP32, you don’t need to install any libraries. Esta biblioteca não é disponibilizada no gerenciador de bibliotecas do IDE Arduino. ESP32 BLE. #define LED 2. * * To return - the password the user entered password is compared to. We'll also create a 3D representation of the sensor orientation on the web browser. 2. If all are ok, then the web page will start showing the motor control page on the web server like in the below image. Then, click the “ SAVE ” button and return to the main dashboard. ESP32 - HTTP Request. The web_server component creates a simple web server on the node that can be accessed through any browser and a simple REST API. Discover the versatility and convenience of controlling servo motors wirelessly through an ESP32-based web server, opening up ESP32 - Temperature via Web. Aug 21, 2020 · The ESP32 receiver board receives the packets from the sender boards and hosts a web server to display the latest received readings. Following are detailed steps to use the API exposed by HTTP Server: httpd_start (): Creates an instance of HTTP server, allocate memory/resources for it depending upon the specified configuration and outputs a handle to the server instance. It also controls an LED (Light Emitting Diode) and an Active buzzer. bin file from your sketch. More on ESP32 ESP32 can be accessed by the browser, to monitor the conditions I found I could still access the ESP32 as a web server, BUT the ESP32 was unable to send email, connect to ThingSpeak or access NTP So it seems those DNS parameters are not 100% optional for some reason – and that should be reflected in the main body of this article rather than left to the comment section. 回路はGPIOの配置がボードごとに異なることを考慮して、ブレッドボード上に配線します。. ESP32 ESP-MESH. Implementing Web Server on ESP32: The ESP32, a low-cost microcontroller with integrated Wi-Fi and Bluetooth capabilities, has become a popular choice for IoT applications due to its power and affordability. to/3GJOVfwDriver Silicon Labs: - https://www. We have the ESP32 microcontroller talking to an MFRC522 RFID reader to read the RFID tags/cards. 3. Protocols. To allow this to work with ESP32 devices, open the Arduino IDE > Preferences dialog and add this line to the Additional boards manager URLs field: Navigate to Tools > Board > Boards manager, and search for “esp32”. ESP32 Bluetooth. By following this tutorial, you will be able to turn your ESP32 into a web server with some cool features: Multiple web pages are active simultaneously. Step 1: Setting Up the Environment. At the same time, it is hosting a Web Application that will display in real-time if the RFID tag Communication. Jan 21, 2021 · In this project we'll build a web server with the ESP32 to display readings from the MPU-6050 accelerometer and gyroscope sensor. Nhớ bấm subscribe chúng mình để xem thêm những video thú vị khác về ch In this article, we will explore the process of setting up an ESP32-based web server using the popular Arduino IDE, accompanied by practical examples to illustrate the key concepts. HTTP GET Web APIs. 168. The “/serverIndex” path serves the serverIndex page. Let’s Understand the code. Dec 18, 2019 · Using relays with the ESP32 is a great way to control AC household appliances remotely. This blog post w… Jul 8, 2018 · In this post, we are going to create a webserver using ESP32. 3V Power Supply. /*. こんにちは、ENGかぴです。. 1. Open VS Code: Click on the Extensions icon or press Ctrl + Shift + X to open the Extensions tab. We can find this library folder inside the Arduino installation folder. The ESP32 Camera Web Server and OpenCV have each been described extensively and in detail in the literature. Step 4: PHP script processes the result and returns only Mar 22, 2020 · Percobaan kita dengan ESP32 tidak berhenti sampai menggunakan wireless saja yaa!! Kali ini, kita akan melakukan percobaan dengan membuat suatu web server yang tentunya dapat digunakan. For complete project details (schematics + source code), visit https://randomnerdtutorials. Eventually, some commands can be sent to the board via the serial port. . silabs. Mar 9, 2021 · For example: Web_Server_LED_OTA_ESP32. The HTML content can be dynamically updated with real-time values Sep 27, 2022 · ESP32 RFID Web Server – DESIGN. 本記事はプロモーションが含まれています。. Generate a . With this object, you can create a web page on Port 80. There are various instructions around the place, but they were all confusing and it took a long time to figure out what was needed, I hope these examples Oct 19, 2018 · The following figure shows a simplified diagram to demonstrate how everything works. May 14, 2024 · A web server on ESP32 refers to the capability of the ESP32 microcontroller to host and serve web pages and web applications. スケッチをコピーして書き込み、シリアルモニタに表示されるIPアドレスにWebブラウザからアクセスすると、このような画面が表示されまし Upload Images to ESP32/ESP8266 LittleFS. Additionally, we will interface ESP32 with a HTTP server library for ESP8266/ESP32 Arduino cores (previously ESP8266WebServer) Activity. Or Null on fail. In this section, we explore the power of JavaScript in fetching real-time data and updating the HTML content, enabling a responsive and interactive user experience. ESP32 Web Server. Find the following two lines of code and set the two constants to your router’s SSID and password respectively. Open your web browser and type the IP address 192. com/developers Step 2: Esp32 Web OTA Update (Over the Air Update) The first sketch should be uploaded via serial port. Several . The web server we’ll build updates the readings automatically without the need to refresh the web page. After web client requests for a web page, ESP32 web server responds to the web client with an HTML file which will show as a web page in web browser. You can control your robot remotely even if it’s out of your sight. Inside that folder, create a new folder called data. The ESP32 runs a web server code based on the ESPAsyncWebServer library; The HTML and CSS files are stored on the ESP32 SPIFFS (Serial Peripheral Interface Flash File System); When you make a request on a specific URL using your browser, the ESP32 responds with Apr 25, 2020 · Run a Web Server on ESP32. sy fs hz fo uc gc dw nq sk ed