@jkandasa said:

gauge.set(parseFloat(${temperatureSen.value}));

Solution was little more complicated:

<div id="wrapper" style="text-align: center">    
  <canvas id="my-gauge-${uuid}" style="display: inline-block;"></canvas>
  <div style="font-size:21px" id="textfield--${uuid}"></div>
</div>
<script>
  var CustomTextRenderer = function(el){
    this.el = el;
    this.render = function(gauge) {
      this.el.innerHTML = gauge.displayedValue.toPrecision(3);
     }
  }
  CustomTextRenderer.prototype = new TextRenderer();
  var cs = new CustomTextRenderer(document.getElementById("textfield--${uuid}"));
  var opts = {
    lines: 32,
    angle: 0,
    lineWidth: 0.24,
    pointer: {
      length: 0.9,
      strokeWidth: 0.035,
      color: '#000066'
    },
    limitMax: 'false', 
    percentColors: [[0.0, "#2B31CF" ], [0.60, "#37CF32"], [1.0, "#ff0000"]],
    strokeColor: '#E0E0E0',
    generateGradient: true
  };
  var target = document.getElementById('my-gauge-${uuid}');
  var gauge = new Gauge(target).setOptions(opts);
  gauge.animationSpeed = 3;
  gauge.maxValue = 40.0;
  gauge.setMinValue(-30.0);
  gauge.setTextField(new CustomTextRenderer(document.getElementById("textfield--${uuid}")))
  gauge.set(${temperatureSen.value});
</script>

Yes. Logout and Login corrected my time. Thanks!

@jkandasa

Have you been able to check the RFLink Gateway page? I really love what you have done for MySensors, if I only could migrate my 433Mhz setup to your solution. That would be awsome! I can help anyway I can, I'm a C-programmer with an electronics degree. Also have a lot spare time for testing

Works great now! Thank you for your support!

Is there any development going on to support the RFLink serial gateway? It should be fairly straightforward. More information is available here http://www.nemcon.nl/blog2/protref

Or maybe I can get a pointer as where to start adding support, could be nice project

///Redferne