ESP32 Arduino: Parsing XML Techtutorialsx 2019-12-01 | This video explains how to parse a simple XML document using the ESP32 and the Arduino core. In this video we will use the TinyXML-2 library.Note: On the video, I've mistakenly mentioned that the output of the FirstChildElement method is a XMLDocument object pointer, but it is a XMLElement object pointer.Tested on an ESP32 FireBeetle board from DFRobot: dfrobot.com/product-1590.htmlTinyXML2 GitHub page: github.com/leethomason/tinyxml2TinyXML-2 Documentation page: http://leethomason.github.io/tinyxml2/index.htmlParse method documentation: http://leethomason.github.io/tinyxml2/classtinyxml2_1_1_x_m_l_document.html#a1819bd34f540a7304c105a6232d25a1fFirstChild method documentation: http://leethomason.github.io/tinyxml2/classtinyxml2_1_1_x_m_l_node.html#ae7dc225e1018cdd685f7563593a1fe08FirstChildElement method documentation: http://leethomason.github.io/tinyxml2/classtinyxml2_1_1_x_m_l_node.html#a1795a35852dc8aae877cc8ded986e59bQueryIntText method documentation: http://leethomason.github.io/tinyxml2/classtinyxml2_1_1_x_m_l_element.html#a926357996bef633cb736e1a558419632In case of error, the QueryIntText method returns:- XML_CAN_NOT_CONVERT_TEXT: if the text cannot be converted to the requested type (int)- XML_NO_TEXT_NODE if there is no child text to query.
ESP32: WebSerial with mDNS resolution Techtutorialsx 2022-01-24 | How to use WebSerial with mDNS to perform the resolution of the IP address of the ESP32. With this solution, we no longer need to know the IP address of the ESP32 before hand.For a written version of this tutorial with all the source code included, please consult my blog: techtutorialsx.com/2022/01/24/esp32-webserial-and-mdnsFireBeetle Board: dfrobot.com/product-2231.htmlmDNS on the ESP32 (Video tutorial): youtube.com/watch?v=WiIpKr6Fs1gSuggested ESP32 readings:Websocket Server: broadcast messages: techtutorialsx.com/2021/12/06/esp32-websocket-server-broadcast-messagesChat application on the ESP32: techtutorialsx.com/2022/01/17/esp32-chat-application-introductionFor an extensive list of ESP32 written tutorial, please check my blog: techtutorialsx.com/category/esp32
ESP32: WebSerial over soft AP Techtutorialsx 2022-01-24 | This video explains how to use the WebSerial library with the ESP32 acting as Soft Access Point. This operating mode combined with WebSerial is very useful to deploy the ESP32 in a place where no WiFi network is available, allowing the ESP32 to host its own network and using WebSerial for debugging or any other purpose.For a written tutorial with the code available to copy, please go here:techtutorialsx.com/2021/07/23/esp32-webserial-console-over-soft-apFireBeetle Board: dfrobot.com/product-2231.htmlESP32 Soft AP Video Tutorial: youtube.com/watch?v=6yL5kGVhSwISuggested Written tutorials:ESP32 as SoftAP: techtutorialsx.com/2017/07/26/esp32-arduino-setting-a-soft-apESP32 as SoftAP and Station simultaneously: techtutorialsx.com/2021/01/04/esp32-soft-ap-and-station-modesmDNS address resolution: techtutorialsx.com/2020/04/17/esp32-mdns-address-resolutionFor an extensive list of 350+ ESP32 Written tutorials, please check my blog: techtutorialsx.com/category/esp32
ESP32: Getting started with WebSerial Techtutorialsx 2022-01-21 | In this tutorial we are going to learn how to get started using the WebSerial library, which offers a Serial like interface over the web.GitHub page of the library: github.com/ayushsharma82/WebSerialInstallation instructions: github.com/ayushsharma82/WebSerial#how-to-installUnder the hood, the library uses the async HTTP web server library, which you need to install as a dependency: github.com/me-no-dev/ESPAsyncWebServerFor a written tutorial about WebSerial, please check this post at my blog: techtutorialsx.com/2021/01/09/esp32-arduino-webserialFireBeetle ESP32 board used: dfrobot.com/product-2231.html mDNS on the ESP32: techtutorialsx.com/2020/04/17/esp32-mdns-address-resolutionSuggested written posts:Async HTTP webserver introduction: techtutorialsx.com/2017/12/01/esp32-arduino-asynchronous-http-webserverWebsockets server on the ESP32: techtutorialsx.com/2018/08/14/esp32-async-http-web-server-websockets-introduction
ESP32 Camera: face detection Techtutorialsx 2020-06-13 | In this video tutorial we will learn how to detect faces in images captured by the ESP32. The library uses the MTMN model to find faces in the image. We will be using the Arduino core.For a written version of this tutorial with the full source code, please check here: techtutorialsx.com/2020/06/13/esp32-camera-face-detectionUseful links:The face detection ESP32 component: github.com/espressif/esp-face/tree/4f13bd33132f0d6ce841ee1d31186803cf194b3fESP-WHO: github.com/espressif/esp-whoThe ESP32 camera driver: github.com/espressif/esp32-cameraFine tuning the MTMN parameters: github.com/espressif/esp-face/tree/master/face_detectionOriginal example from the Arduino core: github.com/espressif/arduino-esp32/tree/master/libraries/ESP32/examples/Camera/CameraWebServerCamera board model used (eBay link): ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=ESP32-CAM-CH340&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=HW-818+esp32RGB888 - image format where each channel (R, G and B) have 8 bits eachMore tutorials on the camera on my blog:techtutorialsx.com/2020/06/10/esp32-camera-image-serverPlenty more ESP32 written tutorials (more than 300!):techtutorialsx.com/category/esp32
ESP32 Camera - Image server Techtutorialsx 2020-06-11 | This tutorial explains how to setup a HTTP web server on a ESP32 to return to the client images taken by a camera connected to the microcontroller.For a written tutorial with source code, please check the corresponding post on my blog: techtutorialsx.com/2020/06/10/esp32-camera-image-serverI'm using a HW-818 camera board model and a OV2640 camera. The board can be found at eBay: ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=ESP32-CAM-CH340&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=HW-818+esp32We will make use of the async HTTP web server library: github.com/me-no-dev/ESPAsyncWebServerFor an introductory tutorial on how to use this server library, please check my other videos or my blog: techtutorialsx.com/2017/12/01/esp32-arduino-asynchronous-http-webserverSome corrections / additional information of what was mentioned on the video:- xclk_freq_hz is the frequency of the clock signal of the camera, not the crystal frequency, like mentioned. The value of 20000000 Hz is one of the possible values that should be used for the OV2640 (note here: github.com/espressif/esp32-camera/blob/4af111a5e274a2973fa10cd3c1ec69174a1bdb93/driver/include/esp_camera.h#L98)- fb_count is the number of frame buffers to be allocated (not the number of frames, like mentioned).You can find more information about the camera driver here: github.com/espressif/esp32-cameraArduino core example mentioned in the video: github.com/espressif/arduino-esp32/tree/master/libraries/ESP32/examples/Camera/CameraWebServerPin definitions for each camera board: github.com/espressif/arduino-esp32/blob/master/libraries/ESP32/examples/Camera/CameraWebServer/camera_pins.hFrame sizes enum: github.com/espressif/esp32-camera/blob/9f99b1b03ccfbd1937c3aee96f563af9df1e0ba6/driver/include/sensor.h#L57Pixel format enums: github.com/espressif/esp32-camera/blob/9f99b1b03ccfbd1937c3aee96f563af9df1e0ba6/driver/include/sensor.h#L29For a lot more ESP32 tutorials (more than 300!), please check my blog: techtutorialsx.com/category/esp32Also for the ESP8266: techtutorialsx.com/category/esp8266
ESP32 Camera - Arduino Core basic example Techtutorialsx 2020-06-11 | This tutorial illustrates the Arduino core basic camera example running on a HW-818 ESP32 board.All the code shown here comes from the Arduino core example and the aim of this video is to demonstrate how to use it as a simple way to confirm our hardware is working before jumping into custom code for our application.This example will start a HTTP server from which we can get a camera stream, take images and fine tune a lot of camera parameters (resolution, brightness, contrast...) from a UI.Arduino Example: github.com/espressif/arduino-esp32/tree/master/libraries/ESP32/examples/Camera/CameraWebServerThe camera model used in the video can be bought at ebay for around 10 euros: ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=ESP32-CAM-CH340&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=HW-818+esp32A camera tutorial from my blog: techtutorialsx.com/2020/06/10/esp32-camera-image-serverPlenty more written tutorials for the ESP32 at my blog:techtutorialsx.com/category/esp32
ESP32: advertise multiple mDNS services Techtutorialsx 2020-04-26 | This video tutorial demonstrates how to advertise multiple network services using mDNS. The advertiser will be a ESP32 and it will advertise 2 services.We will also check the code to program another ESP32 as inquirer of these two services.The code for this tutorial is very similar from what we have been covering before. The main focus is to illustrate that the ESP32 is capable of handling the advertisement of multiple services.The code for both devices will be implemented using the Arduino core.FireBeetle board: dfrobot.com/product-1590.htmlYou can find many more ESP32 tutorials (300+) at my blog: techtutorialsx.com
ESP32: Query mDNS service Techtutorialsx 2020-04-25 | This tutorial explains how to use a ESP32 to query a service advertised using mDNS. The advertiser will also be a ESP32.We will be using the Arduino core to program both devices.For a written version of this tutorial containing the whole code, please check here: techtutorialsx.com/2020/04/27/esp32-query-mdns-serviceESP32 FireBeetle board dfrobot.com/product-1590.htmlCheck more ESP32 and ESP8266 tutorials at my blog:techtutorialsx.com
ESP32: Static IP address Techtutorialsx 2020-04-24 | This video explains how to assign a static IP address to the ESP32 on the local network.For a written tutorial with all the source code and detailed step by step explanation, please check here: techtutorialsx.com/2020/04/21/esp32-arduino-set-static-ip-addressTutorial on how to Ping a remote host with the ESP32: techtutorialsx.com/2019/10/05/esp32-arduino-pinging-a-remote-hostVery good article about DHCP on home networks: stevessmarthomeguide.com/understanding-dhcp-home-networksFireBeetle board from DFRobot: dfrobot.com/product-1590.htmlCheck my blog for more ESP32 tutorials: techtutorialsx.com
ESP32mDNS: Advertise network service Techtutorialsx 2020-04-19 | This video shows how to advertise a network service with mDNS, using the ESP32 and the Arduino core.Our network service will be a simple HTTP web server. We will be using the async HTTP web server library to set it up. Nonetheless, it could be something else other than a HTTP server.Written tutorial with all the source code: techtutorialsx.com/2020/04/18/esp32-advertise-service-with-mdnspip (Python package installer): pypi.org/project/pipZeroconf library: pypi.org/project/zeroconfRequests library: requests.readthedocs.io/en/masterCommands to install both libraries with pip:pip install zeroconfpip install requestsPyCharm IDE: jetbrains.com/pycharm/download/#section=windowsmDNS IDF library documentation: docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/protocols/mdns.htmlCommon network service names: http://www.dns-sd.org/serviceTypes.htmlAsync HTTP web server (written post): techtutorialsx.com/2017/12/01/esp32-arduino-asynchronous-http-webserver
ESP32: mDNS address resolution Techtutorialsx 2020-04-18 | In this video we will learn how to use mDNS to resolve the address of a HTTP web server hosted by the ESP32.This means that we don't need to know the actual IP address of the ESP32 to reach the server it is hosting since mDNS will allow us to do the resolution of a known hostname into the IP address of the device.Another big advantage of mDNS is that it doesn't need a dedicated infra-structure for the name resolution, like a traditional DNS server. You can get the complete code from this written tutorial at my blog: techtutorialsx.com/2020/04/17/esp32-mdns-address-resolutionSetting up HTTP web server (written post): techtutorialsx.com/2017/12/01/esp32-arduino-asynchronous-http-webserverSetting up HTTP web server (video): youtube.com/watch?v=BvePZCJ7tMYIDF mDNS documentation: docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/protocols/mdns.htmlBounjour (for Windows): support.apple.com/downloads/bonjour-for-windowsAvahi (for Linux): github.com/lathiat/avahi
ESP32: Checking if PS4 controller is charging Techtutorialsx 2020-04-12 | In this tutorial we will check if the PS4 controller is charging or not, using the ESP32 and the Arduino core.You can check a written tutorial with full source code here: techtutorialsx.com/2020/04/04/esp32-checking-if-ps4-controller-is-chargingIntroductory tutorial explaining how to obtain the Bluetooth MAC address stored in the controller: youtube.com/watch?v=4fOSjKJIB1Q How to detect a controller connection with a callback function: youtube.com/watch?v=8tawH4bsln8ESP32 FireBeetle board: dfrobot.com/product-1590.htmlArduino library: github.com/NURobotics/PS4-esp32
ESP32: PS4 controller connection event Techtutorialsx 2020-04-12 | This tutorial explains how to detect if a PS4 controller connected to the ESP32 by registering a callback function.This approach is more optimized since we don't need to resort to polling, like we did in the introductory video (youtu.be/4fOSjKJIB1Q). Note that the video also contains a detailed explanation on the setup we need to do to obtain the Bluetooth MAC address stored on the PS4 controller.ESP32 FireBeetle board: dfrobot.com/product-1590.htmlWritten tutorial with all the source code: techtutorialsx.com/2020/02/16/esp32-ps4-controller-connection-eventArduino Library used: github.com/NURobotics/PS4-esp32
ESP32: Connecting a PS4 controller Techtutorialsx 2020-04-12 | This tutorial explains how to connect a PS4 controller to the ESP32., using the Arduino core.You can check below a written version of the tutorial at my blog. It contains the full source code: techtutorialsx.com/2020/02/15/esp32-connecting-a-ps4-controllerESP32 FireBeetle board: dfrobot.com/product-1590.htmlLibrary used: github.com/NURobotics/PS4-esp32SixAxis Pair Tool: dancingpixelstudios.com/sixaxis-controller/sixaxispairtool
ESP32 ESP-NOW: Getting started Techtutorialsx 2019-12-30 | This video explains how to get started with ESP-NOW on the ESP32. We will be using the Arduino core to program the devices (sender and receiver) but we will be using some lower level functions from IDF.ESP-NOW Overview: espressif.com/en/products/software/esp-now/overviewESP-NOW Documentation: docs.espressif.com/projects/esp-idf/en/latest/api-reference/network/esp_now.htmlIDF: github.com/espressif/esp-idfFireBeetle ESP32: dfrobot.com/product-1590.htmlBeetle ESP32: dfrobot.com/product-1798.html
ESP32 cpplinq: The All operator Techtutorialsx 2019-12-30 | In this tutorial we will learn how to use the cpplinq any operator to check if all elements of an array fills a given criteria.In this video we will be testing the code in the ESP32, using the Arduino core. Nonetheless, the code also works on the ESP8266, as cpplinq is a generic C++ library.Tested on the ESP32 FireBeetle board: dfrobot.com/product-1590.htmlAlso tested on the ESP8266 FireBeetle board: dfrobot.com/product-1634.html
ESP32 / ESP8266 cpplinq: The Any operator Techtutorialsx 2019-12-30 | In this tutorial we will learn how to use the cpplinq any operator to check if at least one element of an array fills a given criteria.In this video we will be testing the code in the ESP32, using the Arduino core. Nonetheless, the code also works on the ESP8266, as cpplinq is a generic C++ library.Tested on the ESP32 FireBeetle board: dfrobot.com/product-1590.htmlAlso tested on the ESP8266 FireBeetle board: dfrobot.com/product-1634.html
ESP32 / ESP8266 cpplinq: the count operator Techtutorialsx 2019-12-30 | In this tutorial we are going to learn how to use the cpplinq count operator to count the number of elements of an array.The tutorial shows the code running on the ESP32, using the Arduino core. Nonetheless, it also works on the ESP8266 since cpplinq is a generic C++ library that can be used as an Arduino library.Tested on the ESP32 FireBeetle board: dfrobot.com/product-1590.htmlAlso tested on the ESP8266 FireBeetle board: dfrobot.com/product-1634.htmlTutorial on chaining cpplinq operators: youtube.com/watch?v=20LNxRhcR7c&feature=youtu.beTutorial on filtering an array with cpplinq: youtube.com/watch?v=sf2X_X7wtBg
ESP32 / ESP8266 cpplinq: chaining operators Techtutorialsx 2019-12-30 | In this video tutorial we will learn how to chain cpplinq operators to build more complex expression trees. We will be using the Arduino core, running on the ESP32, but the code also works on the ESP8266.The tests shown here were done on an ESP32 board but the code also works on the ESP8266, since cpplinq is a generic C++ library.cpplinq: github.com/mrange/cpplinqESP32 FireBeetle board: dfrobot.com/product-1590.htmlThis tutorial was also tested on the ESP8266, on a FireBeetle board:dfrobot.com/product-1634.htmlFiltering an array with cpplinq: youtube.com/watch?v=sf2X_X7wtBg
ESP32 / ESP8266 cpplinq: max and min operators Techtutorialsx 2019-12-30 | In this video tutorial we are going to illustrate how to obtain the minimum and maximum values of an integer array using, respectively, the min and max operators from the cpplinq library.We will be using an ESP32 as target board and the cpplinq library will be used as an Arduino library.cpplinq: github.com/mrange/cpplinqThe tests shown on this video were done on a ESP32 FireBeetle board from DFRobot: dfrobot.com/product-1590.htmlSince cpplinq is a generic C++ library, the code also works on the ESP8266. Tested on a ESP8266 FireBeetle board: dfrobot.com/product-1634.html
ESP32 cpplinq: removing duplicates Techtutorialsx 2019-12-30 | This video tutorial explains how to remove the duplicated elements from an integer array, using the cpplinq library. This generic C++ library is being used as an Arduino library.This operator is very simple but very useful, specially when used in more complex expression trees.cpplinq: github.com/mrange/cpplinqESP32 FireBeetle board: dfrobot.com/product-1590.htmlAlso tested on the ESP8266 FireBeetle board: dfrobot.com/product-1634.html
ESP32 cpplinq: reversing an array Techtutorialsx 2019-12-01 | In this tutorial we are going to learn how to reverse an array of integers, using the cpplinq library. We will be using the ESP32 and the Arduino core. Note however that since cpplinq is a generic C++ library, the code also works on the ESP8266.Cpplinq: github.com/mrange/cpplinqESP32 FireBeetle board: dfrobot.com/product-1590.html
ESP32 XML: Getting attribute of element Techtutorialsx 2019-12-01 | In this tutorial we are going to learn how to extract the value of an attribute from an element of a parsed XML document. We are going to be using the Arduino core running on the ESP32. We will be using the TinyXML-2 library.Tested on an ESP32 FireBeetle board from DFRobot: dfrobot.com/product-1590.htmlPrevious introductory tutorial on the library: youtu.be/s2GSkrXLLFITinyXML-2 GitHub page: github.com/leethomason/tinyxml2TinyXML-2 documentation page: http://leethomason.github.io/tinyxml2/index.htmlQueryIntAttribute documentation: http://leethomason.github.io/tinyxml2/classtinyxml2_1_1_x_m_l_element.html#a8a78bc1187c1c45ad89f2690eab567b1
ESP32 / ESP8266 cpplinq: filtering array Techtutorialsx 2019-11-30 | This video tutorial explains how to filter an array using cpplinq, running on the Arduino core. In this tutorial we are going to use the cpplinq where operator to obtain all the even elements of an integer array.The tutorial demonstrated here is done on the ESP32 but the code also works on the ESP8266, since cpplinq is a generic C++ library.ESP32 Firebeetle board: dfrobot.com/product-1590.htmlCpplinq: github.com/mrange/cpplinq
ESP32 Soft AP: Station connected WiFi event Techtutorialsx 2019-10-05 | In this tutorial we will learn how to use WiFi events to detect when a station connects to the network hosted by the ESP32.Written version of this tutorial with source code:techtutorialsx.com/2019/09/07/esp32-soft-ap-station-connection-eventGitHub issue: github.com/espressif/arduino-esp32/issues/2285ESP32 FireBeetle board:dfrobot.com/product-1590.htmlRelated Written Posts:- ESP32 Arduino soft AP: Station disconnected event techtutorialsx.com/2019/09/22/esp32-soft-ap-station-disconnected-event- ESP32 Arduino soft AP: Obtaining IP address of connected stations techtutorialsx.com/2019/09/22/esp32-arduino-soft-ap-obtaining-ip-address-of-connected-stationsPlenty of other (written) ESP32 tutorials at my blog:techtutorialsx.com/category/esp32Also a lot of ESP8266 tutorials:techtutorialsx.com/category/esp8266
ESP32: Using lambdas as WiFi event handling functions Techtutorialsx 2019-10-03 | This tutorial shows how to use C++ Lambdas as ESP32 WiFi event handling functions.We will be using the Arduino core.Written version of the tutorial:techtutorialsx.com/2019/09/03/esp32-using-lambdas-as-wifi-event-handling-functionsESP32 FireBeetle board from DFRobot: dfrobot.com/product-1590.htmlC++ Lambda syntax:en.cppreference.com/w/cpp/language/lambdaRelated tutorials- ESP32 Soft AP: Enable IPv6 support: techtutorialsx.com/2019/10/02/esp32-soft-ap-enabling-ipv6-support- ESP32 Soft AP: deauth connected stations: techtutorialsx.com/2019/09/22/esp32-soft-ap-deauth-connected-stationsA lot of ESP32 written tutorials:techtutorialsx.com/category/esp32
ESP32 WiFi events: Station got IP Techtutorialsx 2019-10-03 | This video shows how to handle the event that is triggered when a local IP address is assigned to the ESP32, after it connects to a WiFi network.You can check below a written version of the tutorial (the code is slightly different):techtutorialsx.com/2019/09/01/esp32-wifi-events-station-got-ip-addressESP32 FireBeetle board from DFRobot: dfrobot.com/product-1590.htmlRelated (written) tutorials:- ESP32 Soft AP: obtaining IP address of connected stations: techtutorialsx.com/2019/09/22/esp32-arduino-soft-ap-obtaining-ip-address-of-connected-stations- ESP32 soft AP: Getting number of connected stations: techtutorialsx.com/2019/09/22/esp32-soft-ap-getting-number-of-stations-connectedA lot of ESP32 written tutorials:techtutorialsx.com/category/esp32
ESP32 Arduino: Getting started with WiFi events Techtutorialsx 2019-10-03 | This video is an introduction to the ESP32 WiFi events, using the Arduino core.You can check here a written version of this tutorial:techtutorialsx.com/2019/08/11/esp32-arduino-getting-started-with-wifi-eventsESP32 FireBeetle board from DFRobot: dfrobot.com/product-1590.htmlRelated tutorials:ESP32 Soft AP: Station disconnected event: techtutorialsx.com/2019/09/22/esp32-soft-ap-station-disconnected-eventESP32 Soft AP: Station connection event: techtutorialsx.com/2019/09/07/esp32-soft-ap-station-connection-eventESP32 Soft AP: Getting MAC address of connecting device: techtutorialsx.com/2019/09/07/esp32-soft-ap-getting-connecting-station-mac-address-from-wifi-eventA lot of ESP32 written tutorials:techtutorialsx.com/category/esp32
ESP32 / ESP8266 cpplinq: last_or_default operator Techtutorialsx 2019-09-21 | How to get the lastelement of an array that meets a given criteria, using cpplinq and the last_or_default operator.The tests shown on the video were done on the ESP32, but the library also works on the ESP8266.ESP32 FireBeetle board:dfrobot.com/product-1590.htmlESP8266 FireBeetle board:dfrobot.com/product-1634.htmlC++ Lambda syntax:en.cppreference.com/w/cpp/language/lambdaRelated Written tutorials:The pairwise operator: techtutorialsx.com/2019/08/15/esp32-esp8266-arduino-the-pairwise-operatorThe except operator: techtutorialsx.com/2019/08/14/esp32-esp8266-cpplinq-the-except-operatorIntersection of arrays: techtutorialsx.com/2019/08/11/esp32-esp8266-cpplinq-finding-the-intersection-between-two-arraysA lot more written tutorials for the ESP32:techtutorialsx.com/category/esp32
ESP32 / ESP8266 cpplinq: first operator with condition Techtutorialsx 2019-08-19 | How to get the first element of an array that meets a given criteria, using cpplinq and the first operator.The tests shown on the video were done on the ESP32, but the library also works on the ESP8266.ESP32 FireBeetle board:dfrobot.com/product-1590.htmlESP8266 FireBeetle board:dfrobot.com/product-1634.htmlWritten tutorial with installation instructions for cpplinq and a code sample:techtutorialsx.com/2019/04/12/esp32-arduino-getting-started-with-the-cpplinq-libraryC++ Lambda syntax:en.cppreference.com/w/cpp/language/lambdaRelated Written tutorials:- Count operator: techtutorialsx.com/2019/04/17/esp32-arduino-cpplinq-the-count-operator- Concatenating arrays: techtutorialsx.com/2019/04/20/esp32-cpplinq-concatenating-arrays- The average operator: techtutorialsx.com/2019/04/25/esp32-arduino-cpplinq-the-average-operatorA lot of ESP32 written tutorials (more than 250!):- techtutorialsx.com/category/esp32ESP8266 tutorials:- techtutorialsx.com/category/esp8266
ESP32 / ESP8266: Getting started with the cpplinq library Techtutorialsx 2019-08-19 | In this tutorial we will check a very simple getting started tutorial about the cpplinq library. This is a C++ library of high order functions inspired by C# LINQ.This will be tested using the Arduino core. The tests shown on the video were done on the ESP32, but the library also works on the ESP8266.ESP32 FireBeetle board:dfrobot.com/product-1590.htmlESP8266 FireBeetle board:dfrobot.com/product-1634.htmlWritten tutorial with installation instructions and a code sample:techtutorialsx.com/2019/04/12/esp32-arduino-getting-started-with-the-cpplinq-libraryWritten post about testing the library on the ESP8266:techtutorialsx.com/2019/07/23/esp8266-arduino-testing-the-cpplinq-libraryGitHub page of the library:github.com/mrange/cpplinqLibrary website:archive.codeplex.com/?p=cpplinqInteresting reading:codeproject.com/Articles/488177/cpplinq-LINQ-Query-Operators-for-Cplusplus-SequencLINQ (C#):docs.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/linqHigh order functions:en.wikipedia.org/wiki/Higher-order_functionRelated tutorials (written)- Filtering an array: techtutorialsx.com/2019/04/13/esp32-arduino-filtering-arrays-with-cpplinq- Min and Max operators: techtutorialsx.com/2019/04/13/esp32-arduino-cpplinq-getting-minimum-and-maximum-values-from-array- Reversing an array: techtutorialsx.com/2019/05/11/esp32-cpplinq-reversing-an-array- The any operator: techtutorialsx.com/2019/04/25/esp32-arduino-cpplinq-the-any-operatorA lot of other ESP32 written tutorials (more than 250!):- techtutorialsx.com/category/esp32ESP8266 tutorials:- techtutorialsx.com/category/esp8266
ESP8266 SPIFFS: Reading a file Techtutorialsx 2019-06-08 | How to read a file from the SPIFFS file system of the ESP8266, using the Arduino core.Written tutorial with the full source code:techtutorialsx.com/2019/06/02/esp8266-spiffs-reading-a-fileESP8266 FireBeetle board from DFRobot:dfrobot.com/product-1634.htmlMore related tutorials at my blog:ESP32 SPIFFS: Writing a file: techtutorialsx.com/2018/08/05/esp32-arduino-spiffs-writing-a-fileESP32 SPIFFS: Renaming a file: techtutorialsx.com/2019/02/24/esp32-arduino-renaming-a-file-in-the-spiffs-file-systemESP32 SPIFFS: Getting file size: techtutorialsx.com/2018/08/06/esp32-arduino-spiffs-getting-the-size-of-a-fileMore ESP8266 tutorials at my blog:techtutorialsx.com/category/esp8266Also ESP32 written tutorials:techtutorialsx.com/category/esp32
ESP8266 SPIFFS: Writing a file Techtutorialsx 2019-06-08 | This video tutorial explains how to write a file to the SPIFFS file system of the ESP8266, using the Arduino core.Written tutorial with complete source code:techtutorialsx.com/2019/05/28/esp8266-spiffs-writing-a-fileFireBeetle board from DFRobot:dfrobot.com/product-1634.htmlRelated Written tutorials:ESP8266 mounting the SPIFFS file system: techtutorialsx.com/2019/05/27/esp8266-arduino-mounting-the-spiffs-file-systemESP8266 reading a file from SPIFFS: techtutorialsx.com/2019/06/02/esp8266-spiffs-reading-a-filePlenty more ESP8266 tutorials:techtutorialsx.com/category/esp8266
ESP8266 Arduino: Mounting the SPIFFS file system Techtutorialsx 2019-06-08 | This tutorial explains how to mount the ESP8266 SPIFFS file system, using the Arduino core.Written version of this tutorial, with full source code:techtutorialsx.com/2019/05/28/esp8266-spiffs-writing-a-fileESP8266 FireBeetle board from DFRobot:dfrobot.com/product-1634.htmlFS.h file: github.com/esp8266/Arduino/blob/eea9999dc5eaf464a432f77d5b65269f9baf198d/cores/esp8266/FS.hSPIFFS original implementation: github.com/pellepl/spiffsMore about SPIFFSon the ESP8266: arduino-esp8266.readthedocs.io/en/2.5.2/filesystem.htmlRelated Written tutorials:ESP8266 SPIFFS: writing a file: techtutorialsx.com/2019/05/28/esp8266-spiffs-writing-a-fileESP8266 SPIFFS: reading a file: techtutorialsx.com/2019/06/02/esp8266-spiffs-reading-a-filePlenty more ESP8266 tutorials at my blog:techtutorialsx.com/category/esp8266ESP32 tutorials:techtutorialsx.com/category/esp32
ESP32 Arduino HTTP server: Serving image as attachment Techtutorialsx 2019-04-26 | How to serve an image as attachment from the ESP32 SPIFFS file system.Async HTTP web server library:github.com/me-no-dev/ESPAsyncWebServerESP32 Arduino IDE SPIFFS plugin:youtube.com/watch?v=1y03xt6IM-oESP32 Arduino: Serve HTML file from SPIFFS:youtube.com/watch?v=Ijr6vep-XYQESP32 Arduino: Serve HTML file as attachment:youtube.com/watch?v=HjkoB-qa51EServing an image from the ESP32 SPIFFS file system:youtube.com/watch?v=H_rnArt25SI&feature=youtu.beFirebeetle board:dfrobot.com/product-1590.htmlRelated (written) tutorials:- ESP32 Arduino: Serving files as attachment: techtutorialsx.com/2019/03/29/esp32-arduino-serving-file-as-attachment- ESP32 Arduino: Serving an image: techtutorialsx.com/2018/08/24/esp32-http-web-server-serving-image-from-file-system- ESP32 Arduino Async HTTP web server: techtutorialsx.com/2017/12/01/esp32-arduino-asynchronous-http-webserver- ESP32 Arduino HTTPS server: techtutorialsx.com/2019/04/07/esp32-https-web-serverPlenty more ESP32 Written tutorials at my blog:techtutorialsx.com/category/esp32
ESP32 Arduino HTTP web server: Serve Image from SPIFFS file system Techtutorialsx 2019-04-26 | How to serve an image from the SPIFFS file system of the ESP32, using the Arduino core and the HTTP async web server library.Written version with all source code:techtutorialsx.com/2018/08/24/esp32-http-web-server-serving-image-from-file-systemAsync HTTP web server library:github.com/me-no-dev/ESPAsyncWebServerESP32 Arduino IDE SPIFFS plugin:youtube.com/watch?v=1y03xt6IM-oESP32 Arduino: Serve HTML file from SPIFFS:youtube.com/watch?v=Ijr6vep-XYQESP32 Arduino: Serve HTML file as attachment:youtube.com/watch?v=HjkoB-qa51EFirebeetle board:dfrobot.com/product-1590.htmlRelated (written) tutorials:- ESP32 Arduino: Serving bootstrap: techtutorialsx.com/2019/03/04/esp32-arduino-serving-bootstrap- ESP32 Arduino Async HTTP web server: techtutorialsx.com/2017/12/01/esp32-arduino-asynchronous-http-webserver- ESP32 Arduino HTTP server: template processing: techtutorialsx.com/2018/07/22/esp32-arduino-http-server-template-processing- ESP32 Arduino HTTPS server: techtutorialsx.com/2019/04/07/esp32-https-web-serverPlenty more ESP32 Written tutorials at my blog:techtutorialsx.com/category/esp32
ESP32 Arduino HTTP server: serving file as attachment Techtutorialsx 2019-04-06 | This video explains how to serve a HTML file from the SPIFFS file system of the ESP32, as an attachment. This means that, instead of interpreting and rendering the file, the browser will download it and save it locally.You can check a written tutorial on my blog, with the full source code:techtutorialsx.com/2019/03/29/esp32-arduino-serving-file-as-attachmentArduino IDE SPIFFS upload plugin:github.com/me-no-dev/arduino-esp32fs-pluginVideo on how to use the SPIFFS plugin:youtube.com/watch?v=1y03xt6IM-oVideo on how to serve HTML from the file system:youtube.com/watch?v=Ijr6vep-XYQESP32 FireBeetle board:dfrobot.com/product-1590.htmlRelated Written tutorials at my blog:ESP32 Serving a React.js app: techtutorialsx.com/2019/03/24/esp32-arduino-serving-a-react-js-appESP32 Serving jQuery: techtutorialsx.com/2018/09/11/esp32-arduino-web-server-serving-jqueryESP32 Arduino: Controlling a DC motor remotely via HTTP: techtutorialsx.com/2019/03/31/esp32-arduino-controlling-a-dc-motor-remotely-using-httpPlenty more tutorials at my blog:techtutorialsx.com/category/esp32Also for the ESP8266:techtutorialsx.com/category/esp8266
ESP32 Arduino: Serve html from SPIFFS file system Techtutorialsx 2019-03-09 | This video explains how to serve a HTML file from the SPIFFS file system of the ESP32, using the Arduino core.For a written version of this tutorial, with the full source code, please check my blog below:techtutorialsx.com/2018/08/24/esp32-web-server-serving-html-from-file-systemESP32 FireBeetle board:dfrobot.com/product-1590.htmlArduino IDE file upload plugin:github.com/me-no-dev/arduino-esp32fs-plugin#installationAsync HTTP web server framework:github.com/me-no-dev/ESPAsyncWebServerAsync HTTP web server video tutorial:youtube.com/watch?v=BvePZCJ7tMYRelated content:- Serving image from file system: techtutorialsx.com/2018/08/24/esp32-http-web-server-serving-image-from-file-system- Serving Bootstrap from SPIFFS file system: techtutorialsx.com/2019/03/04/esp32-arduino-serving-bootstrapPlenty more ESP32 tutorials (written) at my blog:techtutorialsx.com/category/esp32
ESP32 Arduino SPIFFS: File upload IDE plugin Techtutorialsx 2019-03-09 | This tutorial explains how to use an Arduino IDE plugin to upload files from a computer to the ESP32 SPIFFS file system.For a written version of this tutorial with the source code, please check here:techtutorialsx.com/2018/08/24/esp32-arduino-spiffs-file-upload-ide-pluginVideo tutorial explaining how to read a file from the SPIFFS file system:youtube.com/watch?v=xc93ygUngmIArduino IDE plugin:github.com/me-no-dev/arduino-esp32fs-pluginInstallation instructions:github.com/me-no-dev/arduino-esp32fs-plugin#installationFireBeetle board:dfrobot.com/product-1590.htmlRelated tutorials (written):- Serving HTML from the SPIFFS ESP32 file system: techtutorialsx.com/2018/08/24/esp32-web-server-serving-html-from-file-system- Serving jQuery: techtutorialsx.com/2018/09/11/esp32-arduino-web-server-serving-jquery- Serving Bootstrap from ESP32 SPIFFS: techtutorialsx.com/2019/03/04/esp32-arduino-serving-bootstrap- Serving image from SPIFFS: techtutorialsx.com/2018/08/24/esp32-http-web-server-serving-image-from-file-systemPlenty more tutorials at my blog:techtutorialsx.com/category/esp32
ESP32 Arduino SPIFFS: check if file exists Techtutorialsx 2019-03-09 | In this video we will learn how to test if a file exists in the SPIFFS file system.For a written version of this tutorial, please check my blog below. It contains the full source code.techtutorialsx.com/2018/10/06/esp32-arduino-spiffs-testing-if-file-existsRelated videos:Write to file: youtube.com/watch?v=PAZUG7oSAwARead from file: youtube.com/watch?v=xc93ygUngmIAppend content to file: youtube.com/watch?v=8vJz1XYejHAFireBeetle board:dfrobot.com/product-1590.htmlRelated written tutorials:- Getting total bytes used in the SPIFFS file system: techtutorialsx.com/2019/03/03/esp32-arduino-spiffs-getting-total-bytes-used- Deleting a file from the SPIFFS file system: techtutorialsx.com/2019/02/24/esp32-arduino-removing-a-file-from-the-spiffs-file-systemPlenty more tutorials at my blog:techtutorialsx.com/category/esp32
ESP32 Arduino SPIFFS: Append content to file Techtutorialsx 2019-03-07 | This video explains how to append content to a file on the ESP32 SPIFFS file system, using the Arduino core.For a detailed written tutorial with source code, please check my blog:techtutorialsx.com/2018/08/13/esp32-arduino-spiffs-append-content-to-fileESP32 FireBeetle board:dfrobot.com/product-1590.htmlRelated videosWrite a file: youtube.com/watch?v=PAZUG7oSAwARead a file: youtube.com/watch?v=xc93ygUngmI&feature=youtu.beRelated written posts:- Serving jQuery from SPIFFS with the ESP32: techtutorialsx.com/2018/09/11/esp32-arduino-web-server-serving-jquery- Serving image from the ESP32 SPIFFS file system: techtutorialsx.com/2018/08/24/esp32-http-web-server-serving-image-from-file-system- Serving HTML from the SPIFFS file system: techtutorialsx.com/2018/08/24/esp32-web-server-serving-html-from-file-systemPlenty other ESP32 tutorials:techtutorialsx.com/category/esp32
ESP32 Arduino SPIFFS: Reading a file Techtutorialsx 2019-03-07 | This tutorial explains how to read a file from the SPIFFS file system of the ESP32, using the Arduino core.For a written version of the tutorial with the full source code, please check my blog:techtutorialsx.com/2018/08/05/esp32-arduino-spiffs-reading-a-fileWriting a file video tutorial: youtube.com/watch?v=PAZUG7oSAwA&feature=youtu.beESP32 FireBeetle board:dfrobot.com/product-1590.htmlRelated content (Written posts from my blog):- Getting total bytes used in SPIFFS: techtutorialsx.com/2019/03/03/esp32-arduino-spiffs-getting-total-bytes-used- Renaming a file on the ESP32 SPIFFS file system: techtutorialsx.com/2019/02/24/esp32-arduino-renaming-a-file-in-the-spiffs-file-system- Testing if file exists in the ESP32 SPIFFS file system: techtutorialsx.com/2018/10/06/esp32-arduino-spiffs-testing-if-file-existsLots of other ESP32 other tutorials:techtutorialsx.com/category/esp32
ESP32 Arduino SPIFFS: Write file Techtutorialsx 2019-03-07 | This tutorial explains how to mount the SPIFFS file system, create a file and write some content to it.SPIFFS stands for SPI Flash File System and it is one of the file system types supported by the ESP32.Written tutorial at my blog, with full source code:techtutorialsx.com/2018/08/05/esp32-arduino-spiffs-writing-a-fileVideo with the explanation on how to read a file: youtube.com/watch?v=xc93ygUngmI&feature=youtu.beESP32 FireBeetle board from DFRobot:dfrobot.com/product-1590.htmlSPIFFS file system GitHub project: github.com/pellepl/spiffsIDF documentation: docs.espressif.com/projects/esp-idf/en/latest/api-reference/storage/spiffs.htmlSPIFFS Arduino core header file:github.com/espressif/arduino-esp32/blob/master/libraries/SPIFFS/src/SPIFFS.hFile class: github.com/espressif/arduino-esp32/blob/master/libraries/FS/src/FS.h#L47Related content (written tutorials):- Append content to file in SPIFFS: techtutorialsx.com/2018/08/13/esp32-arduino-spiffs-append-content-to-file- Serving Bootstrap from the ESP32 SPIFFS file system: techtutorialsx.com/2019/03/04/esp32-arduino-serving-bootstrap- SPIFFS file upload plugin: techtutorialsx.com/2018/08/24/esp32-arduino-spiffs-file-upload-ide-plugin
ESP32 Arduino HTTP PUT request Techtutorialsx 2019-02-04 | This video tutorial shows how to perform a HTTP PUT request using the ESP32 and the Arduino core.Written tutorial with code: techtutorialsx.com/2019/01/07/esp32-arduino-http-put-requestESP32 FireBeetle board: dfrobot.com/product-1590.htmlTesting online API: http://jsonplaceholder.typicode.comPostman tool: getpostman.comPUT vs POST in REST: restfulapi.net/rest-put-vs-postRelated Posts (written)- ESP32 HTTP GET request: techtutorialsx.com/2017/05/19/esp32-http-get-requests- ESP32 HTTP/2 GET request: techtutorialsx.com/2018/11/19/esp32-arduino-http-2-get-request- ESP32 HTTP POST request: techtutorialsx.com/2017/05/20/esp32-http-post-requests- ESP32 HTTP/2 POST request: techtutorialsx.com/2018/12/19/esp32-http-2-post-request- ESP32 HTTP/2 PUT request: techtutorialsx.com/2019/01/06/esp32-http-2-put-requestA lot more ESP32 (written) tutorials:techtutorialsx.com/category/esp32
ESP32 Arduino: Receiving a ping Techtutorialsx 2019-02-04 | This video shows how to send a ping request to a ESP32 connected to a WiFi network.Written tutorial: techtutorialsx.com/2019/01/11/esp32-arduino-receiving-a-pingESP32 FireBeetle board: dfrobot.com/product-1590.htmlRelated tutorials (Written)- ESP32 Arduino: Get station interface hostname: techtutorialsx.com/2019/01/17/esp32-arduino-getting-station-interface-hostnamePlenty more ESP32 written tutorials:techtutorialsx.com/category/esp32
ESP32 HTTP/2: Add headers to GET request Techtutorialsx 2019-01-09 | This tutorial illustrates how to add headers to a HTTP/2 GET request, using the ESP32, the Arduino core and the sh2lib wrapper.Written tutorial with complete source code:techtutorialsx.com/2018/11/25/esp32-http-2-adding-headers-to-get-requestInstalling sh2lib (video):youtube.com/watch?v=00P8oIbNK-QFireBeetle board:dfrobot.com/product-1590.htmlPseudo-headers section of HTTP/2 RFC:tools.ietf.org/html/rfc7540#section-8.1.2.3sh2lib in IDF repository:github.com/espressif/esp-idf/tree/master/examples/protocols/http2_request/components/sh2libRelated Posts (Written):ESP32 HTTP/2 POST request: techtutorialsx.com/2018/12/19/esp32-http-2-post-requestESP32 HTTP/2 PUT request: techtutorialsx.com/2019/01/06/esp32-http-2-put-requestESP32 HTTP/2 with Brotli content: techtutorialsx.com/2018/12/08/esp32-http-2-decompressing-brotli-encoded-contentMany other ESP32 tutorials at my blog:techtutorialsx.com/category/esp32
ESP32 HTTP/2: Add query parameters to GET request Techtutorialsx 2019-01-09 | In this tutorial we will check how to add query parameters to a HTTP/2 GET request, performed using the ESP32 and the Arduino core.Written tutorial with code:techtutorialsx.com/2018/12/02/esp32-arduino-http2-using-query-parametersFireBeetle board:dfrobot.com/product-1590.htmlHTTP/2 RFC:tools.ietf.org/html/rfc7540Installing the sh2lib wrapper (video):youtube.com/watch?v=00P8oIbNK-QRelated Posts (written):ESP32 Arduino HTTP/2 connect to server: techtutorialsx.com/2018/11/18/esp32-http-2-connecting-to-serverESP32 Arduino HTTP/2 POST request with headers:techtutorialsx.com/2019/01/04/esp32-http-2-post-request-with-headersMany other ESP32 tutorials at my blog:techtutorialsx.com/category/esp32
ESP32 Arduino: HTTP/2 GET request Techtutorialsx 2018-12-15 | This tutorial explains how to perform a HTTP/2 GET request using the ESP32 and the Arduino core. We will be using the sh2lib wrapper, installed as a Arduino library. You check here a video tutorial explaining how to setup sh2lib:youtube.com/watch?v=00P8oIbNK-QWritten tutorial with source code (it uses a different endpoint):techtutorialsx.com/2018/11/19/esp32-arduino-http-2-get-requestVideo about creating FreeRTOS task:youtube.com/watch?v=NEq-L9TNMtsIDF original HTTP/2 example:github.com/espressif/esp-idf/blob/master/examples/protocols/http2_request/main/http2_request_example_main.cESP32 FireBeetle board:dfrobot.com/product-1590.htmlRelated posts (written):ESP32 HTTP/2 GET request with stream responsetechtutorialsx.com/2018/11/23/esp32-http-2-get-request-with-continuous-stream-responseESP32 HTTP/2 GET request add headers:techtutorialsx.com/2018/11/25/esp32-http-2-adding-headers-to-get-requestESP32 HTTP/2 GET request decompress Brotli encoded response:techtutorialsx.com/2018/12/08/esp32-http-2-decompressing-brotli-encoded-contentESP32 Create FreeRTOS task:techtutorialsx.com/2017/05/06/esp32-arduino-creating-a-taskMany more ESP32 tutorials:techtutorialsx.com/category/esp32
ESP32 Arduino: Get MAC address of Soft AP interface Techtutorialsx 2018-12-14 | This tutorial explains how to obtain the MAC address of the soft AP WiFi interface of the ESP32. We will be using the Arduino core to program the device.Previous video where we obtained the station interface MAC address:youtube.com/watch?v=IUgoUGMGJMs&feature=youtu.beESP32 FireBeetle board used in the tutorial:dfrobot.com/product-1590.htmlMAC vendor lookup website: macvendors.comFile with implementation of softAPmacAddress method: github.com/espressif/arduino-esp32/blob/14ff311479065c84c01eb75b7efc94627e230bcf/libraries/WiFi/src/WiFiAP.cppRelated Posts (written):ESP32 Setting a soft AP: techtutorialsx.com/2017/07/26/esp32-arduino-setting-a-soft-apESP32 Get started with WiFi: techtutorialsx.com/2017/06/29/esp32-arduino-getting-started-with-wifiGet ESP32 Bluetooth address: techtutorialsx.com/2018/03/09/esp32-arduino-getting-the-bluetooth-device-addressMore (written) ESP32 tutorials:techtutorialsx.com/category/esp32
