thoughtleader

/**
 *  PM2.5/PM10 Air Quality Particulate Handler for Node-Red
 *
 * *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 *  in compliance with the License. You may obtain a copy of the License at:
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed

thoughtleader

     function Heartbeat(context,width,height) {
        var h = this; 
        
        h.context  = context;
        h.width    = width;
        h.height   = height;
        h.baseline = Math.round(h.height / 2);
 
        h.context.moveTo(h.x, h.y);
        h.context.strokeStyle = "#668CFF";