![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/ESP32-HTTP-POST-with-Arduino-IDE-IFTTT-ThingSpeak.jpg?resize=1200%2C675&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nRecommended:<\/strong> ESP32 HTTP GET with Arduino IDE (OpenWeatherMap.org and ThingSpeak)<\/a><\/p>\n\n\n\n The Hypertext Transfer Protocol (HTTP) works as a request-response protocol between a client and server. Here’s an example:<\/p>\n\n\n\n POST <\/strong>is used to send data to a server to create\/update a resource. For example, publish sensor readings to a server.<\/p>\n\n\n\n The data sent to the server with POST is stored in the request body of the HTTP request:<\/p>\n\n\n\n In the body request, you can also send a JSON object:<\/p>\n\n\n\n (With HTTP POST, data is not visible in the URL request. However, if it’s not encrypted, it’s still visible in the request body.)<\/em><\/p>\n\n\n\n Before proceeding with this tutorial, make sure you complete the following prerequisites.<\/p>\n\n\n\n We’ll program the ESP32 <\/a>using Arduino IDE, so make sure you have the ESP32 add-on installed.<\/p>\n\n\n\n In this guide, you’ll learn how to setup your ESP32 board<\/a> to perform HTTP requests to ThingSpeak and IFTTT.com. If you prefer to learn with a local solution you can use HTTP with Node-RED<\/a>. All examples presented in this guide also work with other APIs.<\/p>\n\n\n\n In summary, to make this guide compatible with any service, you need to search for the service API documentation. Then, you need the server name (URL or IP address), and parameters to send in the request (URL path or request body). Finally, modify our examples to integrate with any API you want to use.<\/p>\n\n\n\n In this example, the ESP32 makes an HTTP POST request to send a new value to ThingSpeak.<\/p>\n\n\n ThingSpeak has a free API that allows you to store and retrieve data using HTTP. In this tutorial, you\u2019ll use the ThingSpeak API to publish and visualize data in charts from anywhere. As an example, we’ll publish random values, but in a real application you would use real sensor readings<\/a>.<\/p>\n\n\n\n To use ThingSpeak API, you need an API key. Follow the next steps:<\/p>\n\n\n\n Copy the next sketch to your Arduino IDE:<\/p>\n\n\n View raw code<\/a><\/p>\n\n\n\n Modify the next lines with your network credentials: SSID and password. The code is well commented on where you should make the changes.<\/p>\n\n\n\n Modify the apiKey<\/span> variable to include your ThingSpeak API key.<\/p>\n\n\n\n Now, upload the code to your board and it should work straight away. Read the next section, if you want to learn how to make the HTTP POST request.<\/p>\n\n\n\n In the loop()<\/span> is where you make the HTTP POST request with URL encoded data every 10 seconds with random data:<\/p>\n\n\n\n For example, the ESP32 makes a URL encoded request to publish a new value (30) to field1<\/span>. <\/p>\n\n\n\n Or you can uncomment these next lines to make a request with JSON data (instead of URL-encoded request):<\/p>\n\n\n\n Here’s a sample HTTP POST request with JSON data:<\/p>\n\n\n\n Then, the following lines print the server response code.<\/p>\n\n\n\n In the Arduino IDE serial monitor, you should see an HTTP response code of 200 (this means that the request has succeeded).<\/p>\n\n\n Your ThingSpeak Dashboard should be receiving new random readings every 10 seconds.<\/p>\n\n\n For a final application, you might need to increase the timer or check the API call limits per hour\/minute to avoid getting blocked\/banned.<\/p>\n\n\n\n In this example you\u2019ll learn how to trigger a web API to send email notifications. As an example, we\u2019ll use the IFTTT.com API. IFTTT has has a free plan with lots of useful automations.<\/p>\n\n\n IFTTT stands for \u201cIf This Than That\u201d, and it is a free web-based service to create chains of simple conditional statements called applets.<\/p>\n\n\n This means you can trigger an event when something happens. In this example, the applet sends three random values to your email when the ESP32 makes a request. You can replace those random values with useful sensor readings<\/a>.<\/p>\n\n\n\n If you don\u2019t have an IFTTT account, go the IFTTT website: ifttt.com<\/a> and enter your email to create an account and get started. Creating an account on IFTTT is free!<\/p>\n\n\n\n Next, you need to create a new applet. Follow the next steps to create a new 1. Open the left menu and click the “Create<\/strong>” button.<\/p>\n\n\n 2. Click on the \u201cthis<\/strong>\u201d word. Search for the \u201cWebhooks<\/strong>\u201d service and select the Webhooks icon.<\/p>\n\n\n 3. Choose the \u201cReceive a web request<\/strong>\u201d trigger and give a name to the event. In this case, I’ve typed \u201ctest_event<\/strong>\u201d. Then, click the \u201cCreate trigger<\/strong>\u201d button.<\/p>\n\n\n\n 4. Click the \u201cthat<\/strong>\u201d word to proceed. Now, define what happens when the event you\u2019ve defined is triggered. Search for the \u201cEmail<\/strong>\u201d service and select it.<\/p>\n\n\n 5. Then, select Send me an email<\/strong>. You can leave the default options.<\/p>\n\n\n\n 6. Press the \u201cCreate action<\/strong>\u201d button to create your Applet. Then, click on Continue<\/strong>, and finally, Finish<\/strong>.<\/p>\n\n\n\n Before proceeding with the project, it\u2019s important to test your Applet first. Follow the next steps to test it:<\/p>\n\n\n\n 1. Search for Webhooks <\/strong>service or open this link: https:\/\/ifttt.com\/maker_webhooks<\/a><\/p>\n\n\n\n 2. Click the \u201cDocumentation<\/strong>\u201d button. <\/p>\n\n\n A page showing your unique API key will show up.<\/p>\n\n\n Save your API key because you’ll need it later.<\/p>\n\n\n\n 3. Fill the \u201cTo trigger an Event with 3 JSON values\u201d section with the event name created previously, in our case test_event<\/strong>. Add some random values to the value1<\/strong>, value2<\/strong>, and value 3<\/strong> fields. Then, click the \u201cTest it<\/strong>\u201d button.<\/p>\n\n\n 4. The event should be successfully triggered, and you\u2019ll get a green message saying \u201cEvent has been triggered<\/strong>\u201d.<\/p>\n\n\n\n 5. Go to your Email account. You should have a new email in your inbox from the IFTTT service with the values you\u2019ve defined in the previous step.<\/p>\n\n\n\n If you\u2019ve received an email with the data entered in the test request, it means your Applet is working as expected. Now, we need to program the ESP32 to send an HTTP POST request to the IFTTT service with the sensor readings.<\/p>\n\n\n\n After installing the necessary board add-ons and libraries, copy the following code to your Arduino IDE, but don\u2019t upload it yet. You need to make some changes to make it work for you.<\/p>\n\n\n View raw code<\/a><\/p>\n\n\n\n Modify the next lines with your network credentials: SSID and password. The code is well commented on where you should make the changes.<\/p>\n\n\n\n Insert your event name and API key in the following line:<\/p>\n\n\n\n Example URL:<\/p>\n\n\n\n In the loop()<\/span> is where you make the HTTP POST request every 10 seconds with sample data:<\/p>\n\n\n\n The ESP32 makes a new URL encoded request to publish some random values in the value1<\/span>, value2<\/span> and value3<\/span> fields. For example:<\/p>\n\n\n\n Alternatively, you can uncomment these next lines to make a request with JSON data:<\/p>\n\n\n\n Here’s an example of HTTP POST request with a JSON data object. <\/p>\n\n\n\n Then, the following lines of code print the HTTP response from the server.<\/p>\n\n\n\n After uploading the code, open the Serial Monitor and you’ll see a message printing the HTTP response code 200 indicating that the request has succeeded.<\/p>\n\n\n\n Go to your email account, and you should get a new email from IFTTT with three random values. In this case: 38, 20 and 13.<\/p>\n\n\n For demonstration purposes, we’re publishing new data every 10 seconds. However, for a long term project you should increase the timer or check the API call limits per hour\/minute to avoid getting blocked\/banned.<\/p>\n\n\n\n In this tutorial you’ve learned how to integrate your ESP32 with web services using HTTP POST requests. You can also make HTTP GET requests with the ESP32<\/a>.<\/p>\n\n\n\n If you’re using an ESP8266 board, read:<\/p>\n\n\n\n You might also like reading:<\/strong><\/p>\n\n\n\n I hope you liked this project. If you have any questions, post a comment below and we’ll try to get back to you.<\/p>\n\n\n\n If you like ESP32, you might consider enrolling in our course “Learn ESP32 with Arduino IDE<\/a>“. You can also access our free ESP32 resources here<\/a>. <\/p>\n\n\n\n Thank you for reading.<\/p>\n","protected":false},"excerpt":{"rendered":" In this guide, you’ll learn how to make HTTP POST requests using the ESP32 board with Arduino IDE. We’ll demonstrate how to post JSON data or URL encoded values to … <\/p>\nHTTP POST Request Method<\/h2>\n\n\n\n
HTTP POST<\/h3>\n\n\n\n
POST \/update HTTP\/1.1\nHost: example.com\napi_key=api&field1=value1\nContent-Type: application\/x-www-form-urlencoded<\/code><\/pre>\n\n\n\nPOST \/update HTTP\/1.1\nHost: example.com\n{api_key: \"api\", field1: value1}\nContent-Type: application\/json<\/code><\/pre>\n\n\n\nPrerequisites<\/h2>\n\n\n\n
Arduino IDE<\/h3>\n\n\n\n
Other Web Services or APIs<\/h2>\n\n\n\n
1. ESP32 HTTP POST Data (ThingSpeak)<\/h2>\n\n\n\n
![\"HTTP](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/HTTP-POST-Thingspeak-ESP32.png?resize=900%2C350&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nUsing ThingSpeak API<\/h3>\n\n\n\n
![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/ESP32-ESP8266-NodeMCU-ThingSpeak-New-Channel.png?resize=453%2C326&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/ESP32-ESP8266-NodeMCU-ThingSpeak-View-API-Key-Write-Copy.png?resize=1024%2C628&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nCode ESP32 HTTP POST ThingSpeak<\/h3>\n\n\n\n
\/*\r\n Rui Santos\r\n Complete project details at Complete project details at https:\/\/RandomNerdTutorials.com\/esp32-http-post-ifttt-thingspeak-arduino\/ \r\n\r\n Permission is hereby granted, free of charge, to any person obtaining a copy\r\n of this software and associated documentation files.\r\n\r\n The above copyright notice and this permission notice shall be included in all\r\n copies or substantial portions of the Software.\r\n*\/\r\n\r\n#include <WiFi.h>\r\n#include <HTTPClient.h>\r\n\r\nconst char* ssid = "REPLACE_WITH_YOUR_SSID";\r\nconst char* password = "REPLACE_WITH_YOUR_PASSWORD";\r\n\r\n\/\/ Domain Name with full URL Path for HTTP POST Request\r\nconst char* serverName = "http:\/\/api.thingspeak.com\/update";\r\n\/\/ Service API Key\r\nString apiKey = "REPLACE_WITH_YOUR_API_KEY";\r\n\r\n\/\/ THE DEFAULT TIMER IS SET TO 10 SECONDS FOR TESTING PURPOSES\r\n\/\/ For a final application, check the API call limits per hour\/minute to avoid getting blocked\/banned\r\nunsigned long lastTime = 0;\r\n\/\/ Set timer to 10 minutes (600000)\r\n\/\/unsigned long timerDelay = 600000;\r\n\/\/ Timer set to 10 seconds (10000)\r\nunsigned long timerDelay = 10000;\r\n\r\nvoid setup() {\r\n Serial.begin(115200);\r\n\r\n WiFi.begin(ssid, password);\r\n Serial.println("Connecting");\r\n while(WiFi.status() != WL_CONNECTED) {\r\n delay(500);\r\n Serial.print(".");\r\n }\r\n Serial.println("");\r\n Serial.print("Connected to WiFi network with IP Address: ");\r\n Serial.println(WiFi.localIP());\r\n \r\n Serial.println("Timer set to 10 seconds (timerDelay variable), it will take 10 seconds before publishing the first reading.");\r\n\r\n \/\/ Random seed is a number used to initialize a pseudorandom number generator\r\n randomSeed(analogRead(33));\r\n}\r\n\r\nvoid loop() {\r\n \/\/Send an HTTP POST request every 10 seconds\r\n if ((millis() - lastTime) > timerDelay) {\r\n \/\/Check WiFi connection status\r\n if(WiFi.status()== WL_CONNECTED){\r\n WiFiClient client;\r\n HTTPClient http;\r\n \r\n \/\/ Your Domain name with URL path or IP address with path\r\n http.begin(client, serverName);\r\n \r\n \/\/ Specify content-type header\r\n http.addHeader("Content-Type", "application\/x-www-form-urlencoded");\r\n \/\/ Data to send with HTTP POST\r\n String httpRequestData = "api_key=" + apiKey + "&field1=" + String(random(40)); \r\n \/\/ Send HTTP POST request\r\n int httpResponseCode = http.POST(httpRequestData);\r\n \r\n \/*\r\n \/\/ If you need an HTTP request with a content type: application\/json, use the following:\r\n http.addHeader("Content-Type", "application\/json");\r\n \/\/ JSON data to send with HTTP POST\r\n String httpRequestData = "{\\"api_key\\":\\"" + apiKey + "\\",\\"field1\\":\\"" + String(random(40)) + "\\"}"; \r\n \/\/ Send HTTP POST request\r\n int httpResponseCode = http.POST(httpRequestData);*\/\r\n \r\n Serial.print("HTTP Response code: ");\r\n Serial.println(httpResponseCode);\r\n \r\n \/\/ Free resources\r\n http.end();\r\n }\r\n else {\r\n Serial.println("WiFi Disconnected");\r\n }\r\n lastTime = millis();\r\n }\r\n}\r\n<\/code><\/pre>\n\tSetting your network credentials<\/h4>\n\n\n\n
\/\/ Replace with your network credentials\nconst char* ssid = \"REPLACE_WITH_YOUR_SSID\";\nconst char* password = \"REPLACE_WITH_YOUR_PASSWORD\";<\/code><\/pre>\n\n\n\nSetting your API Key<\/h4>\n\n\n\n
String apiKey = \"REPLACE_WITH_YOUR_API_KEY\";<\/code><\/pre>\n\n\n\nHTTP POST Request<\/h4>\n\n\n\n
\/\/ Specify content-type header\nhttp.addHeader(\"Content-Type\", \"application\/x-www-form-urlencoded\");\n\n\/\/ Data to send with HTTP POST\nString httpRequestData = \"api_key=\" + apiKey + \"&field1=\" + String(random(40));\n\n\/\/ Send HTTP POST request\nint httpResponseCode = http.POST(httpRequestData);<\/code><\/pre>\n\n\n\nPOST \/update HTTP\/1.1\nHost: api.thingspeak.com\napi_key=api&field1=30\nContent-Type: application\/x-www-form-urlencoded<\/code><\/pre>\n\n\n\n\/\/ If you need an HTTP request with a content type: application\/json, use the following:\nhttp.addHeader(\"Content-Type\", \"application\/json\");\n\n\/\/ JSON data to send with HTTP POST\nString httpRequestData = \"{\\\"api_key\\\":\\\"\" + apiKey + \"\\\",\\\"field1\\\":\\\"\" + String(random(40)) + \"\\\"}\";\n\n\/\/ Send HTTP POST request\nint httpResponseCode = http.POST(httpRequestData);<\/code><\/pre>\n\n\n\nPOST \/update HTTP\/1.1\nHost: api.thingspeak.com\n{api_key: \"api\", field1: 30}\nContent-Type: application\/json<\/code><\/pre>\n\n\n\nSerial.print(\"HTTP Response code: \");\nSerial.println(httpResponseCode);<\/code><\/pre>\n\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/ESP32-ESP8266-NodeMCU-HTTP-POST-Arduino-IDE-Serial-Monitor-Response.png?resize=903%2C589&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/ESP32-ESP8266-NodeMCU-HTTP-GET-POST-ThingSpeak-chart.png?resize=463%2C314&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n2. ESP32 HTTP POST (IFTTT.com)<\/h2>\n\n\n\n
![\"HTTP](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/HTTP-POST-IFTTT-ESP32.png?resize=900%2C349&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nUsing IFTTT.com Webhooks API<\/h3>\n\n\n\n
![\"IFTTT.com](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/Wordmark_on_gray.png?resize=308%2C114&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nCreating an IFTTT Account<\/h4>\n\n\n\n
applet:<\/p>\n\n\n\n![\"ifttt](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/ifttt-discover-create-new-applet.png?resize=954%2C559&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Select](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/select-webhooks-ifttt-1.png?resize=654%2C417&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"select](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/select-email-service-ifttt.png?resize=495%2C424&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nTesting Your Applet<\/h4>\n\n\n\n
![\"webhooks](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/webhooks-documentation-ifttt.png?resize=954%2C611&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"IFTTT](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2022\/10\/IFTTT-API-KEYU.png?resize=684%2C91&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"IFTTT](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2022\/10\/IFTTT-Trigger-an-Event-3-JSON-Values.png?resize=777%2C529&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nCode ESP32 HTTP POST Webhooks IFTTT.com<\/h3>\n\n\n\n
\/*\r\n Rui Santos\r\n Complete project details at Complete project details at https:\/\/RandomNerdTutorials.com\/esp32-http-post-ifttt-thingspeak-arduino\/\r\n\r\n Permission is hereby granted, free of charge, to any person obtaining a copy\r\n of this software and associated documentation files.\r\n\r\n The above copyright notice and this permission notice shall be included in all\r\n copies or substantial portions of the Software.\r\n*\/\r\n\r\n#include <WiFi.h>\r\n#include <HTTPClient.h>\r\n\r\nconst char* ssid = "REPLACE_WITH_YOUR_SSID";\r\nconst char* password = "REPLACE_WITH_YOUR_PASSWORD";\r\n\r\n\/\/ Domain Name with full URL Path for HTTP POST Request\r\n\/\/ REPLACE WITH YOUR EVENT NAME AND API KEY - open the documentation: https:\/\/ifttt.com\/maker_webhooks\r\nconst char* serverName = "http:\/\/maker.ifttt.com\/trigger\/REPLACE_WITH_YOUR_EVENT\/with\/key\/REPLACE_WITH_YOUR_API_KEY";\r\n\/\/ Example:\r\n\/\/const char* serverName = "http:\/\/maker.ifttt.com\/trigger\/test_event\/with\/key\/nAZjOphL3d-ZO4N3k64-1A7gTlNSrxMJdmqy3tC";\r\n\r\n\/\/ THE DEFAULT TIMER IS SET TO 10 SECONDS FOR TESTING PURPOSES\r\n\/\/ For a final application, check the API call limits per hour\/minute to avoid getting blocked\/banned\r\nunsigned long lastTime = 0;\r\n\/\/ Set timer to 10 minutes (600000)\r\n\/\/unsigned long timerDelay = 600000;\r\n\/\/ Timer set to 10 seconds (10000)\r\nunsigned long timerDelay = 10000;\r\n\r\nvoid setup() {\r\n Serial.begin(115200);\r\n\r\n WiFi.begin(ssid, password);\r\n Serial.println("Connecting");\r\n while(WiFi.status() != WL_CONNECTED) {\r\n delay(500);\r\n Serial.print(".");\r\n }\r\n Serial.println("");\r\n Serial.print("Connected to WiFi network with IP Address: ");\r\n Serial.println(WiFi.localIP());\r\n \r\n Serial.println("Timer set to 10 seconds (timerDelay variable), it will take 10 seconds before publishing the first reading.");\r\n\r\n \/\/ Random seed is a number used to initialize a pseudorandom number generator\r\n randomSeed(analogRead(33));\r\n}\r\n\r\nvoid loop() {\r\n \/\/Send an HTTP POST request every 10 seconds\r\n if ((millis() - lastTime) > timerDelay) {\r\n \/\/Check WiFi connection status\r\n if(WiFi.status()== WL_CONNECTED){\r\n WiFiClient client;\r\n HTTPClient http;\r\n \r\n \/\/ Your Domain name with URL path or IP address with path\r\n http.begin(client, serverName);\r\n \r\n \/\/ Specify content-type header\r\n http.addHeader("Content-Type", "application\/x-www-form-urlencoded");\r\n \/\/ Data to send with HTTP POST\r\n String httpRequestData = "value1=" + String(random(40)) + "&value2=" + String(random(40))+ "&value3=" + String(random(40)); \r\n \/\/ Send HTTP POST request\r\n int httpResponseCode = http.POST(httpRequestData);\r\n \r\n \/*\r\n \/\/ If you need an HTTP request with a content type: application\/json, use the following:\r\n http.addHeader("Content-Type", "application\/json");\r\n \/\/ JSON data to send with HTTP POST\r\n String httpRequestData = "{\\"value1\\":\\"" + String(random(40)) + "\\",\\"value2\\":\\"" + String(random(40)) + "\\",\\"value3\\":\\"" + String(random(40)) + "\\"}";\r\n \/\/ Send HTTP POST request\r\n int httpResponseCode = http.POST(httpRequestData);\r\n *\/\r\n \r\n Serial.print("HTTP Response code: ");\r\n Serial.println(httpResponseCode);\r\n \r\n \/\/ Free resources\r\n http.end();\r\n }\r\n else {\r\n Serial.println("WiFi Disconnected");\r\n }\r\n lastTime = millis();\r\n }\r\n}\r\n<\/code><\/pre>\n\tSetting your network credentials<\/h4>\n\n\n\n
\/\/ Replace with your network credentials\nconst char* ssid = \"REPLACE_WITH_YOUR_SSID\";\nconst char* password = \"REPLACE_WITH_YOUR_PASSWORD\";<\/code><\/pre>\n\n\n\nSetting your IFTTT.com API Key<\/h4>\n\n\n\n
const char* serverName = \"http:\/\/maker.ifttt.com\/trigger\/REPLACE_WITH_YOUR_EVENT\/with\/key\/REPLACE_WITH_YOUR_API_KEY\";<\/code><\/pre>\n\n\n\nconst char* serverName = \"http:\/\/maker.ifttt.com\/trigger\/test_event\/with\/key\/nAZjOphL3d-ZO4N3k64-1A7gTlNSrxMJdmqy3t\";<\/code><\/pre>\n\n\n\nHTTP POST Request<\/h4>\n\n\n\n
\/\/ Specify content-type header\nhttp.addHeader(\"Content-Type\", \"application\/x-www-form-urlencoded\");\n\n\/\/ Data to send with HTTP POST\nString httpRequestData = \"value1=\" + String(random(40)) + \"&value2=\" + String(random(40))+ \"&value3=\" + String(random(40));\n\n\/\/ Send HTTP POST request\nint httpResponseCode = http.POST(httpRequestData);<\/code><\/pre>\n\n\n\nPOST \/trigger\/test_event\/with\/key\/nAZjOphL3d-ZO4N3k64-1A7gTlNSrxMJdmqy3tC HTTP\/1.1\nHost: maker.ifttt.com\nvalue1=15&value2=11&value3=30\nContent-Type: application\/x-www-form-urlencoded<\/code><\/pre>\n\n\n\n\/\/ If you need an HTTP request with a content type: application\/json, use the following:\nhttp.addHeader(\"Content-Type\", \"application\/json\");\n\n\/\/ JSON data to send with HTTP POST\nString httpRequestData = \"{\\\"value1\\\":\\\"\" + String(random(40)) + \"\\\",\\\"value2\\\":\\\"\" + String(random(40)) + \"\\\",\\\"value3\\\":\\\"\" + String(random(40)) + \"\\\"}\";\n\n\/\/ Send HTTP POST request\nint httpResponseCode = http.POST(httpRequestData);<\/code><\/pre>\n\n\n\nPOST \/trigger\/test_event\/with\/key\/nAZjOphL3d-ZO4N3k64-1A7gTlNSrxMJdmqy3tC HTTP\/1.1\nHost: maker.ifttt.com\n{value1: 15, value2: 11, value3: 30}\nContent-Type: application\/json<\/code><\/pre>\n\n\n\nSerial.print(\"HTTP Response code: \");\nSerial.println(httpResponseCode);<\/code><\/pre>\n\n\n\nHTTP POST Demonstration<\/h3>\n\n\n\n
<\/figure>\n\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/05\/ESP32-ESP8266-NodeMCU-HTTP-POST-Arduino-IDE-IFTTT-Response.png?resize=794%2C395&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nWrapping Up<\/h2>\n\n\n\n