Read Data From Thingspeak Channel



To upload our data, we need an API key, which we will later include in a piece of python code to upload our sensor data to Thingspeak Website. Celsius scale thermometer and percentage scale humidity meter displays the ambient temperature and humidity through a LCD display and also sends it to ThingSpeak server for live monitoring from anywhere in the world. A developer tutorial on using the Thingspeak API to track the location of an android device. You can find your channel ID at the top of the main page for your channel. ThingSpeak provides instant visualizations of data posted by your devices or equipment. make temp sensor to monitor your furnace or ac usage of hvac. here we are creating channel to store data from DHT11 temperature and humidity sensor so we need two fields. Import data from third-party web services including climate data from NOAA, public utility data from local utility providers, and stock and pricing data from financial providers. I am integrating thingspeak and arduino plus Esp8266 mean making a simple project which contain my android app to update the thingspeak channel and then want to read the data of that channel via arduino uno. The method here is general and can be used with other IoT servers for MQTT connection as well. A car-counting algorithm is running on the Raspberry Pi, and the density of cars counted every 15 seconds is sent to ThingSpeak. The Read API key is to read the values from the channel. For public channels, we don’t need a read key. Read Data from the Weather Station ThingSpeak Channel. The local unit (UNO/ESP-01) will capture data from sensors and actuator status, send them to the Internet, "writing" on a specific ThingSpeak. The ThingSpeak platform is connected with Twitter, so whenever the air quality goes below a certain level, it will send the twitter notification to an authorized twitter account. ThingSpeak provides instant visualizations of data posted by ESP8266 to ThingSpeak. It will be enough to use --data PAYLOAD as an option. In this project, Adarsh and I are going to show you how to send alerts when events are detected in the data by using the MATLAB Analysis app. A new data set is added every hour on the hour using a php CRON script to pull the data from my IoT sensors. The ThingSpeak generates the read and write API key. Collect Data in a New Channel. Fields 3 and 4 contain humidity and temperature data respectively. ThingSpeak is often used for prototyping and proof of concept IoT systems that require analytics. Your application uses this ID to read data from the channel. We will do in 3 parts:. Post to your thingspeak channel using thingspeakwrite, and read your thingspeak channel from your laptop using thingspeakread. Create a MATLAB Analysis Script from Template Code To detect and remove outliers in wind speed data from the Natick weather station, you can write a MATLAB® script using a code template. Choose a web site to get translated content where available and see local events and offers. MQTT over WebSockets can be secured with SSL. com and returns the data as a numeric type. Where you can store and retrieve data. ThingSpeak provides instant visualizations of data posted by your devices or equipment. Note the write API, read API keys and channel ID this channel in the API keys tab of your channel view. In these scenarios, it is useful to use REST calls to update or retrieve data from a ThingSpeak channel. React to the data in a channel when specific conditions are met. It is accomplished by the data communications between Arduino, DHT11 Sensor Module, ESP8266 WIFI module and LCD. Channel 9 contains information from several home environment sensors. In the next chapter, we will program our ESP12E-NodeMCU-Module to upload the data on the thingspeak server and there we can see the data in the graph format. ThingSpeak™ channel 12397 contains data from the MathWorks® weather station, located in Natick, Massachusetts. Your application uses this ID to read data from the channel. In these scenarios, it is useful to use REST calls to update or retrieve data from a ThingSpeak channel. We will create a new file, sudo nano thingspeak. here we are creating channel to store data from DHT11 temperature and humidity sensor so we need two fields. The data is displayed in the form of graphs on the platform. update (data) [source] ¶ Update channel feed. The local unit (UNO/ESP-01) will capture data from sensors and actuator status, send them to the Internet, "writing" on a specific ThingSpeak. ThingSpeak is an IoT analytics platform service that allows you to aggregate, visualize, and analyze live data streams in the cloud. It will be enough to use --data PAYLOAD as an option. This system measures the air quality in real time using MQ135 Gas Sensor with NodeMCU to send the data to ThingSpeak platform. Once data is in a ThingSpeak channel, you can analyze and visualize it, calculate new data, or interact with social media, web services, and other devices. I have set up a Thingspeak channel with the purpose of logging how many times a tweet hashtag is used. There i setup the alert which will send me text message if gas sensor value reach a certain value. ThingSpeak offer a free web service that allows collecting and storing sensor data in the cloud in order to develop IoT applications. Channel 9 contains information from several home environment sensors. The data is displayed in the form of graphs on the platform. You can send data to ThingSpeak from your devices, create instant visualization of live data, and send alerts. SHT25 is a Temperature and Humidity Sensors made by Sensirion. I have a photon with a temp and humidity sensor (DHT11) sending the data to ThingSpeak. You can use the MQTT subscribe method to receive messages whenever the channel is updated. So in this session, you will learn how to use your device as a client to read and to upload the real-time data on a website (which will work as a server) www. ThingSpeak stores data in private channels by default, but public channels can be used to share data with others. ThingSpeak has APIs for collecting data produced by sensors and APIs for reading that data from applications. io and my personal favorite, The Mathworks' ThingSpeak. I am using esp8266. Execute MATLAB code in ThingSpeak, and perform online analysis and processing of the data as it comes in. Thingspeak is a web based open API IoT source information platform [04, 05, 06] that comprehensive in storing the sensor data of varied ‘IoT applications’ and conspire the sensed data output in graphical form at the web level. ThingView - ThingSpeak viewer. ***Note that after tapping either of FEEDS button, auto sync of data will be OFF, in order to turn auto sync ON to make app always fetch recently updated data (last feed), tap REFRESH button from menu bar at top. You will of course need to convert the string representation of the numbers into numeric representations, like in the MATLAB examples. When we sent data to the web, what we did was to WRITE on a ThingSpeak channel (Channel status) to "transmit" (upload) data. Save the X and Y coordinates and the signal strength in separate vectors. In the big business of the Internet of Things, application programming interfaces play an essential role in the collection, analysis, visualization and manipulation of data. If you want to read a string from a provate channel from ThingSpeak, check out the ReadPrivateChannel example. I try to read data from Thingspeak using your code for 2 different channel. I've done this like that:. connect()[/code]. ThingSpeak user [DodBasim] requested an additional field inside of the ThingSpeak Data Channel. Next project I have yet to build. Sends alerts based on temperature and humidity value and control relay and send push notification. Here the requested format is json. Hi do anyone know how to/have tried writing a visual basic program to get or read data from Thingspeak (a cloud platform)? · Hi, vb code: Dim webClient As WebClient = New. This tutorial presents the possibility of using an open-source cloud-based server that could offer the advantage of remote accessing the collected data, graphical representations and analytics. A node that posts data to a ThingSpeak channel. A car-counting algorithm is running on the Raspberry Pi, and the density of cars counted every 15 seconds is sent to ThingSpeak. 1\n"); A ThingSpeak update requires the api key, the data that you are sending, and ending with a content length of the data. Read data from an existing ThingSpeak™ channel and generate a plot with three series on the same axis. You can use the results parameter to control the number of entries returned, which is. example [ data , timestamps ] = thingSpeakRead( ___ ) also returns timestamps from the specified channel on ThingSpeak. We will be programming ESP12E NodeMCU Module to upload GPS data on Thingspeak. Read temperature humidity data and display data over web. It is really worth the try. MQTT is a powerful standard for Subscribe to ThingSpeak IoT Data using MQTT » Hans on IoT - MATLAB & Simulink. You can find source code and more information here:. NodeMCU Tutorial 5 - Reading Data from ThingSpeak 2016 NodeMCU Tutorial 5 - Reading Data from ThingSpeak 2017-06-23T12 this script will read the last. Use Google Assistant to Turn a Light On and Off. Consequently, a ‘read key’ is used to access channel data in case it is set to keep its data private (the default setting). For an introduction to. A ThingSpeak Channel can hold any type of data - sensor data (decimal and comma), binary data, serial strings You can also send geo location information in dedicated location for mobile things. This example shows how to create a new channel to collect analyzed data. It is nothing but services provided by Thingspeak to communicate with your devices. For an introduction to. Every channel has different API keys. I am using esp8266. We will use only AT commands. ) • Channels can be updated at a maximum rate of once every 15 seconds (free) or 1 second (paid) Getting data into ThingSpeak 19. And, the second part is where you want to see that data. These apps can be accessed by POST, GET, PUT and DELETE HTTP requests. You can use the Particle CLI Tools or IoT Debugger. You have two options for settings up the webhook. Channel Access. Setup the Webhook on Particle. Esp32 Vs Esp8266 Wifi Range. e Heartbeat/Pulse/BPM Rate Monitor using Arduino & Pulse Sensor. update-channel-feed. I wanted to read current data from thingspeak website I used urllib library to get data using read url of the channel i used python code import urllib from bs4 import BeautifulSoup data=urllib. Learn how to build a IoT Thingspeak weather app using esp8266 and SHT31. ThingSpeak is a great service and the free version provides more space than you will ever need for small projects. How to interface ESP8266 Wi-Fi Module with evive The tutorial discusses the ESP8266 Wi-Fi Module, how to connect it to evive, and how to configure it for IoT applications using AT commands by writing an Arduino IDE sketch. This project is to monitor the current temperature and log it to ThingSpeak IoT server. [Repost from my blog] I was able to get the Spark Core to upload data to Thingspeak after looking at some of the examples for using the arduino with the Wifi shield. You will now need to create a new account at thingspeak - https://thingspeak. Sends alerts based on temperature and humidity value and control relay and send push notification. You can check our previous project, i. For a demo , just change the channel and read key and press the play button. You can make your channels public to share data. A channel stores the data that we send to ThingSpeak and comprises of the below elements: 8 fields for storing data of any type - These can be used to store the data from a sensor or from an embedded device. Tutorial: IoT Datalogger with ESP8266 WiFi Module and FRDM-KL25Z Posted on December 14, 2014 by Erich Styger In my earlier post " Tutorial: Web Server with the ESP8266 WiFi Module " I used the ESP8266 WiFi module to run a local web server. You can read data from the individual fields of this public channel. To get the age of the most recent entry in a channel’s field feed. Live Temperature and Humidity Monitoring over Internet using Arduino and ThingSpeak. This example shows how to regularize irregularly sampled data to have a constant time period between measurements. Description. The NodeMCU should be connected to the internet via Wi-Fi. Thingspeak is a web based open API IoT source information platform [04, 05, 06] that comprehensive in storing the sensor data of varied ‘IoT applications’ and conspire the sensed data output in graphical form at the web level. Thanks and Regards Content. thingspeak channel. com and returns the data as a numeric type. Create a new channel by clicking on the button as shown in below image - A channel is the source for your data. Export Temperature data to Thingspeak using ESP8266 and DHT11 Hi all , If you want to make a simple and less cost IOT (Internet Of Things) which transfer temperature and humidity data to a website and stores your real time data for monitoring , then this post will full fill all your requirement. temperatureFieldID is the field in the channel that contains temperature values. Field Number Select the number of fields that you want to read from the ThingSpeak channel. These apps can be accessed by POST, GET, PUT and DELETE HTTP requests. Select a Web Site. An example of using the ESP32 or ESP8266 to read data back from a Thingspeak channel by decoding the JSON formatted response. I would like to have OS start when the Temp is at and certain level (This would be for frost protection when water is sprayed over trees and freezes on the buds which creates latent heat) and also when the moisture is at an certain KPA reading. If you disconnect from the MQTT server, you are automatically unsubscribed from channel updates. Scroll down and save the channel. a private or a public channel. You will now need to create a new account at thingspeak - https://thingspeak. One part of the project is where you need to program a thing to send data. I just started learning ESP8266 and in my first project I am successfully able to send data to ThingSpeak. This instructable discusses the following:How to set up Thin. We can view the graph of monitored temperature over the time in the website. Capable of aggregating multiple messages into a single mult-field post. update (data) [source] ¶ Update channel feed. When to Use REST. ThingSpeak enables sensors, instruments, and websites to send data to the cloud where it is stored in either a private or a public channel. Now, click “API Keys” in the menu bar that should be around the middle of your screen. There i setup the alert which will send me text message if gas sensor value reach a certain value. I am integrating thingspeak and arduino plus Esp8266 mean making a simple project which contain my android app to update the thingspeak channel and then want to read the data of that channel via arduino uno. Read the air temperature data for the past 3 hours from channel 22641 using the thingSpeakRead function. update-channel-feed. Please check the attached file for the code. You can use the MQTT subscribe method to receive messages whenever the channel is updated. It means you can store 8 different data to a channel. This is OK. I would like to have OS start when the Temp is at and certain level (This would be for frost protection when water is sprayed over trees and freezes on the buds which creates latent heat) and also when the moisture is at an certain KPA reading. In order to create a "channel" that the Arduino can send data over and to view the logged data in graphs, an account at ThingSpeak must be created (free of charge). ThingSpeak is a great service and the free version provides more space than you will ever need for small projects. Collect Data. Then switch it to read your channel. com and returns the data as a numeric type. Now we should READ from a ThingSpeak channel (Actuator Channel) to "receive" (download) data. Scroll down and save the channel. Send data to Thingspeak using ESP8266. ThingSpeak is an IoT analytics platform service that allows you to aggregate, visualize, and analyze live data streams in the cloud. The values read are then stored in both a mySQL database and thingspeak. com website, select >. While heavy-duty data analysis can still be the purview of hardcore business intelligence (BI) analysts, the ability to visualize large gobs of data in new ways needs to be democratized. read()Receive 1 byte. We just released an app you can install that allows you to send Twitter updates without doing OAuth on the Arduino side. I downloaded the file from the Matlab Central toolbox page , opened the file in MATLAB and installed the toolbox. I am integrating thingspeak and arduino plus Esp8266 mean making a simple project which contain my android app to update the thingspeak channel and then want to read the data of that channel via arduino uno. update-channel-feed. Since it looks like your channel has a text string in it, you'll need to change to the readStringField method. We use the thingSpeakRead function to read data in all fields from our channel 87179 and store them into individual variables respectively. This library enables an Arduino or other compatible hardware to write or read data to or from ThingSpeak, an open data platform for the Internet of Things with MATLAB analytics and visualization. You read data from the public ThingSpeak channel 12397 - Weather Station, and write it into your new channel. Create a new ThingSpeak Channel with six active fields and name the fields: X1, Y1, Z1, X2, Y2 and Z2. I have an open source tool to show ThingSpeak channel data in a table view. Read data from an existing ThingSpeak™ channel and generate a plot with three series on the same axis. Create a new channel by clicking on the button as shown in below image - A channel is the source for your data. You cannot change its value. This key will be needed to send data to ThingSpeak channel from device. IoT ESP8266 Series: 3- ThingSpeak-Android Control NodeMCU's Ports: This is part 3 of IoT ESP8266 tutorial series. Also, check out CheerLights project examples for more ideas on how to do this. read data from an API or website (refer to data import/export lab) use MATLAB mobile to collect data from your phone sensors and download the log file for use in your project (refer to this link) collect live data from a thingspeak channel for use in your project 4 : 10 : 15. And it has a lot of other plugins/stuff that I enjoy like the ability to send a recurring bit of data to my channel that I'm using as a watering function for a pump (hence this post). Part 1: Data Collection. follow instructions above for logging from your phone. You have two options for settings up the webhook. In this video I show you the correct formatting of the requests to obtain data from a Thingspeak channel. Here the requested format is json. However, if you set up a private channel of your own, you will need to supply it to us in order for Senseye to be able to access your data. I would like to have OS start when the Temp is at and certain level (This would be for frost protection when water is sprayed over trees and freezes on the buds which creates latent heat) and also when the moisture is at an certain KPA reading. Monitoring data from sensors using ESP 8266 and arduino ESP 8266 wifi module and the thingspeak IoT platform for visualising the data. Next project I have yet to build. Please check the attached file for the code. The data is collected once a minute. Sends alerts based on temperature and humidity value and control relay and send push notification. Hi m0jon: If I'm reading the Thingspeak documentation correctly, it's not possible to clear the channel data via an API call. Read data from an existing ThingSpeak™ channel and generate a plot with three series on the same axis. Wrap the above code in a loop that continually re-reads the data after a delay (at least 15 seconds, possibly more depending on your data). An example of using the ESP32 or ESP8266 to read data back from a Thingspeak channel by decoding the JSON formatted response. FEEDS or fwd. If you want to read previous or next feeds of your channel then tap rev. Copy the Write API Key of the channel. By default, this block uses the public ThingSpeak server, api. Here are two: dweet. ThingSpeak enables clients to update and receive updates from channel feeds via the ThingSpeak MQTT broker. print("POST /update HTTP/1. Your devices can also read data from a ThingSpeak channel by subscribing to an MQTT topic. The server we use here is ThingSpeak which has an intuitive chart to show the test result for our test. In this project, Adarsh and I are going to show you how to send alerts when events are detected in the data by using the MATLAB Analysis app. Based on your location, we recommend that you select:. ThingSpeak expects for each channel data set, and without any configuration on TS side first data should be encoded as field1, second as field2 and so on…. One such service is ThingSpeak. For a demo , just change the channel and read key and press the play button. ThingSpeak is a data platform for monitoring your data online, targeted to be used for IoT applications. IoT ESP8266 Series: 3- ThingSpeak-Android Control NodeMCU's Ports: This is part 3 of IoT ESP8266 tutorial series. Read data from an existing ThingSpeak™ channel and generate a plot with three series on the same axis. To add a new channel to the TCW210-TH configuration, the channel needs to be first created in the web interface of ThingSpeak. Field 1 will receive the Humidity readings and Field 2 the Temperature readings. You can make the channel public to allow other users to use your feed without a Read API key. pull data from thingspeak. IN THIS VIDEO WE WILL LEARN HOW TO READ THE DATA UPLOADED FROM THINGSPEAK WEBSITE AND ALSO TO FETCH IT USING THE PYTHON IN JSON AND XML FORMAT. IoT Analytics on ThingSpeak: The open data IoT platform with data analytics powered by MATLAB. The method here is general and can be used with other IoT servers for MQTT connection as well. I would like to have OS start when the Temp is at and certain level (This would be for frost protection when water is sprayed over trees and freezes on the buds which creates latent heat) and also when the moisture is at an certain KPA reading. To access the channel, you must have a read API key. A developer tutorial on using the Thingspeak API to track the location of an android device. Use the DateRange name-value pair to use a specific selection of data. ThingSpeak user [DodBasim] requested an additional field inside of the ThingSpeak Data Channel. Read API Key. NOTE 1: Once you complete reading or accomplishing this project, it is equally important to know How to Read Data from Thingspeak. Its a great and very easy to use platform for building IOT projects. 4: Create an Arduino sketch for reading sensor data and sending it to the Linux side. To access the web page for Channel number, click View channel web page. In Thingspeak channel you can set the data as private or public according to your choice. You can use any IoT device to send data to ThingSpeak like previously we used Raspberry Pi to connect with ThingSpeak cloud. It uses channels to store data sent from apps or devices. print("POST /update HTTP/1. It uploads the data to thingspeak. Description. We will READ from a ThingSpeak channel and for that, we will need to send a GET string. Note the nested jQuery “$. For now we will only be looking to writing information to a channel. FEEDS button. If you look on the data import/export tab of your channel there are buttons to press to downloaded data, and on the right side there are examples of how to request the data programatically via web api requests. Looking for your ThingSpeak channel page, you will observe that the data will be loading continuously to each field. com and display it on google gauge - thingspeak. Use the following C program for using the ESP8266 with Arduino Uno, to read the sensor data and then log it to the ThingSpeak IoT cloud. When you issue a GET request to THINGSPEAK>COM for channel data like this:. Here are two: dweet. I have an open source tool to show ThingSpeak channel data in a table view. com website. Please try again later. Fields 6, 7, and 8 are used to store the temperature calibration coefficients. If you want I can sent You program for my controller, but program is only sending data to ThingSpeak. The local unit (UNO/ESP-01) will capture data from sensors and actuator status, send them to the Internet, "writing" on a specific ThingSpeak. You will need an api key from thingspeak. a few things to note, I needed to put a slight delay after the stream or the spark would close the TCP connection too quickly. We just released an app you can install that allows you to send Twitter updates without doing OAuth on the Arduino side. Explanations are in the comments. The local unit will also receive data from the internet, "reading" them from specific ThingSpeak Actuator Channels. If you have an internet-accessible device set it up as a HTTP. Channel ID: Auto-generated ID of your unique channel. I wanted to read current data from thingspeak website I used urllib library to get data using read url of the channel i used python code import urllib from bs4 import BeautifulSoup data=urllib. This is a short example of how to download a block of data from a Thingspeak channel with Processing. update (data) [source] ¶ Update channel feed. I am using esp8266. This example uses a lamp indicator widget set so the lamp is on if the field 1 value is greater than 0. Replace CHANNEL_ID, READ_API_KEY, and FIELD_NUMBER with the appropriate values from your channel. Smart Humidity Sensor - ThingSpeak, MATLAB, and IFTTT. To add a new channel to the TCW210-TH configuration, the channel needs to be first created in the web interface of ThingSpeak. Note the nested jQuery “$. I will document the steps for the IoT Debugger. Read the air temperature data for the past 3 hours from channel 22641 using the thingSpeakRead function. React to the data in a channel when specific conditions are met. Channel 1 contains 4 fields while Channel 2 contains 2 fields. In this tutorial we will make use of the following Thingspeak Apps. This is OK. It uses channels to store data sent from apps or devices. Open the Private view tab on the Thingspeak Channel to see your Temperature graph plotted with the data sent from Thermometer. 1 Wiring […]. Import data from third-party web services including climate data from NOAA, public utility data from local utility providers, and stock and pricing data from financial providers. com to keep you in direct. ThingSpeak allows us to read and write data to channels, which are logs of numbers, strings, etc. Once you save the Channel, go to API Key section of channel & note the Write API key. The questions is not fully clear from which device and not sure which step you are in the process, nevertheless simple steps as follows: 1. Use the following C program for using the ESP8266 with Arduino Uno, to read the sensor data and then log it to the ThingSpeak IoT cloud. Read multiple sensors and send to Thingspeak. We will upload the data on thingspeak server using ESP12e Nodemcu module. Wrap the above code in a loop that continually re-reads the data after a delay (at least 15 seconds, possibly more depending on your data). We named this new field "metadata". The core element of ThingSpeak is a 'ThingSpeak Channel'. You can choose to update data to a ThingSpeak™ channel either using a REST GET or POST request or using MQTT Publish method. Arduino nano will gather data from these sensors and send to ESP8266 for uploading it to your private channel on thingspeak. Your devices can also read data from a ThingSpeak channel by subscribing to an MQTT topic. ThingSpeak allows to aggregate, analyze live data streams in the cloud and visualize as charts. ThingSpeak Server – The ThingSpeak server is used to visualize the data received from the IoT device. Sends alerts based on temperature and humidity value and control relay and send push notification. You can find source code and more information here:. How can I use the data being sent by both sensors to make certain commands on the photon. com and can include any of the input arguments in previous syntaxes. In the previous tutorial we created a thingspeak channel and copy pasted credentials on a notepad file. This tutorial presents the possibility of using an open-source cloud-based server that could offer the advantage of remote accessing the collected data, graphical representations and analytics. You read a soil moisture sensor and post the value to a ThingSpeak channel. It is really worth the try. If you have an internet-accessible device set it up as a HTTP. Go over to the new ThingSpeak channel that you created and see if data is being collected and displayed on one of your charts. Thingspeak provide MQTT and HTTP protocol supported api for collect data from device and send and store data with thingspeak. When to Use REST. Python script to log PI CPU temp to Thingspeak channel. ) • Channels can be updated at a maximum rate of once every 15 seconds (free) or 1 second (paid) Getting data into ThingSpeak 19. ThingSpeak is a free open IoT cloud based platform to store and chart you data. An example of using the ESP32 or ESP8266 to read data back from a Thingspeak channel by decoding the JSON formatted response. update (data) [source] ¶ Update channel feed. Dragino Lg01 The Things Network. We dont need to configure large setup at thingspeak side only we just need to create channel and send IOT device data through. Read the number of seconds since the last entry in a channel with HTTP GET. Part 1: Data Collection. Open the Private view tab on the Thingspeak Channel to see your Temperature graph plotted with the data sent from Thermometer. In this case, results is used to request five results. With the settings described in Channel Configurations, you create a channel, and then send and retrieve data to and from the channel. ThingSpeak - Server software Website ThingSpeak is an open source "Internet of Things" application and API to store and retrieve data from things using HTTP over the Internet or via a Local Area Network. IN THIS VIDEO WE WILL LEARN HOW TO READ THE DATA UPLOADED FROM THINGSPEAK WEBSITE AND ALSO TO FETCH IT USING THE PYTHON IN JSON AND XML FORMAT. com and display it on google gauge - thingspeak. With internet of things we are able to save data in the cloud for later retrieval. Open the ThingSpeak Read block in your model and paste the copied API key into theRead API key parameter. When you issue a GET request to THINGSPEAK>COM for channel data like this:. I truly believe this can be a kickstarter for those who. The data is collected once a minute. We will send the readings of DHT22 sensor to ThingSpeak. This field works like the “status” field, but allows you to post any type of extra data along with your ThingSpeak Data Channel. com to sign up for a free account and create a channel. The ThingSpeak team has released an updated version of the ThingSpeak Communication Library for Arduino, ESP8266, and ESP32 devices. example data = thingSpeakRead( channelID , Name,Value ) uses additional options specified by one or more Name , Value pair arguments. ThingSpeak MQTT honors all MQTT disconnect and unsubscribe messages.