Good morning, I am working on a smart garden project with an Arduino MKR WIFI 1010 and I am using Thingspeak as dashboard for monitoring some quantities (e.g. temperature, humidity, moisture, etc.). However, I would like to add a widget in order to change the state of my relay connected to the waterpump, for example if the variable "waterpump_state" is 0 turn off the pump, otherwise turning on. Do you think is it possible to implement it on Thingspeak? Among the predefined widget I have not found any useful in this sense. Thanks in advance, Lorenzo widget to control a Relay Totally possible. You can build the button in a private plugin, using the plugins app. Here is sample javascript. function loadXMLDoc() { var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { // Typical action to be performed when the document is ready: document.getElementById("demo").innerHTML = xhttp.responseText; } }; xhttp.open("GET", "https://api.thingspeak.com/update?api_key=Y0A92ZT5UMPKK3N1&field1=36&field2=255&field3=250&field4=254&field5=0&field6=3600&field7=0&field8=9", true); xhttp.send(); } function loadXMLDocOff() { var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { // Typical action to be performed when the document is ready: document.getElementById("demo").innerHTML = xhttp.responseText; } }; xhttp.open("GET", "https://api.thingspeak.com/update?api_key=Y0A92ZT5UMPKK3N1&field1=0&field2=0&field3=0&field4=20&field5=0&field6=3600&field7=0&field8=9", true); xhttp.send(); } </script> with this very simple html section <html> <head> <!-- NOTE: This plugin will not be visible on public views of a channel. If you intend to make your channel public, consider using the MATLAB Visualization App to create your visualizations. --> </head> <body> <div id="demo"></div> <div id="button"><button type="button" onclick="loadXMLDoc()">Lights On</button> </div> <div id="offbutton"><button type="button" onclick="loadXMLDocOff()">Lights Off</button> </div> </body> </html> smart garden arduino waterpump
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