great job thanks at first for the great project .......
i am trying to include sensor data in gauge
using esp32
i am able to do in google metter ! example
!DOCTYPE HTML>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load('current', {'packages':['gauge']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Label', 'Value'],
['Memory', 0],
['CPU', 0],
['Network',0]
]);
var options = {
width: 1500, height: 750,
redFrom: 90, redTo: 1000,
yellowFrom:75, yellowTo: 90,
minorTicks: 50
};
var chart = new google.visualization.Gauge(document.getElementById('chart_div'));
chart.draw(data, options);
setInterval(function()
{
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function()
{
if (this.readyState == 4 && this.status == 200)
{
var volt = (( parseFloat(this.responseText)/ 4023)*100)
data.setValue(0, 1, volt );
chart.draw(data, options);
}
}
xhttp.open("GET", "/readABC", true);
xhttp.send();
</script>
but i am unable to lode external data to your gauge ?
pls guide me
i am beginner only
thanks in advance