diff --git a/dist/ng-knob.js b/dist/ng-knob.js
index edd63d0..e7991d9 100644
--- a/dist/ng-knob.js
+++ b/dist/ng-knob.js
@@ -270,7 +270,7 @@
         }
     };
     Knob.prototype.setValue = function(newValue) {
-        if (!this.inDrag && newValue >= this.options.min && newValue <= this.options.max) {
+        if (!this.inDrag && this.value >= this.options.min && this.value <= this.options.max) {
             var radians = this.valueToRadians(newValue, this.options.max, this.options.endAngle, this.options.startAngle, this.options.min);
             this.value = Math.round(~~((newValue < 0 ? -.5 : .5) + newValue / this.options.step) * this.options.step * 100) / 100;
             if (this.options.step < 1) {
@@ -357,7 +357,6 @@
                 scope.$watch("value", function(newValue, oldValue) {
                     if ((newValue !== null || typeof newValue !== "undefined") && typeof oldValue !== "undefined" && newValue !== oldValue) {
                         knob.setValue(newValue);
-                        drawKnob();
                     }
                 });
                 if (scope.options.dynamicOptions) {
diff --git a/dist/ng-knob.min.js b/dist/ng-knob.min.js
index 4163e08..0e381b2 100644
--- a/dist/ng-knob.min.js
+++ b/dist/ng-knob.min.js
@@ -5,4 +5,4 @@
  * Homepage:      https://radmie.github.io/ng-knob
  * Licence:       MIT
  *******************************************************/
-"use strict";!function(){var ui={},Knob=function(element,value,options){this.element=element,this.value=value,this.options=options,this.inDrag=!1};Knob.prototype.valueToRadians=function(value,valueEnd,angleEnd,angleStart,valueStart){return valueEnd=valueEnd||100,valueStart=valueStart||0,angleEnd=angleEnd||360,angleStart=angleStart||0,Math.PI/180*((value-valueStart)*(angleEnd-angleStart)/(valueEnd-valueStart)+angleStart)},Knob.prototype.radiansToValue=function(radians,valueEnd,valueStart,angleEnd,angleStart){return valueEnd=valueEnd||100,valueStart=valueStart||0,angleEnd=angleEnd||360,angleStart=angleStart||0,(180/Math.PI*radians-angleStart)*(valueEnd-valueStart)/(angleEnd-angleStart)+valueStart},Knob.prototype.createArc=function(innerRadius,outerRadius,startAngle,endAngle,cornerRadius){var arc=d3.svg.arc().innerRadius(innerRadius).outerRadius(outerRadius).startAngle(startAngle).endAngle(endAngle).cornerRadius(cornerRadius);return arc},Knob.prototype.drawArc=function(svg,arc,label,style,click,drag){var elem=svg.append("path").attr("id",label).attr("d",arc).style(style).attr("transform","translate("+this.options.size/2+", "+this.options.size/2+")");return this.options.readOnly===!1&&(click&&elem.on("click",click),drag&&elem.call(drag)),elem},Knob.prototype.createArcs=function(){var outerRadius=parseInt(this.options.size/2,10),startAngle=this.valueToRadians(this.options.startAngle,360),endAngle=this.valueToRadians(this.options.endAngle,360);this.options.scale.enabled&&(outerRadius-=this.options.scale.width+this.options.scale.spaceWidth);var diff,trackInnerRadius=outerRadius-this.options.trackWidth,changeInnerRadius=outerRadius-this.options.barWidth,valueInnerRadius=outerRadius-this.options.barWidth,interactInnerRadius=1,trackOuterRadius=outerRadius,changeOuterRadius=outerRadius,valueOuterRadius=outerRadius,interactOuterRadius=outerRadius;this.options.barWidth>this.options.trackWidth?(diff=(this.options.barWidth-this.options.trackWidth)/2,trackInnerRadius-=diff,trackOuterRadius-=diff):this.options.barWidth<this.options.trackWidth&&(diff=(this.options.trackWidth-this.options.barWidth)/2,changeOuterRadius-=diff,valueOuterRadius-=diff,changeInnerRadius-=diff,valueInnerRadius-=diff),this.options.bgColor&&(this.options.bgFull?this.bgArc=this.createArc(0,outerRadius,0,2*Math.PI):this.bgArc=this.createArc(0,outerRadius,startAngle,endAngle)),"tron"===this.options.skin.type&&(trackOuterRadius=trackOuterRadius-this.options.skin.width-this.options.skin.spaceWidth,changeOuterRadius=changeOuterRadius-this.options.skin.width-this.options.skin.spaceWidth,valueOuterRadius=valueOuterRadius-this.options.skin.width-this.options.skin.spaceWidth,interactOuterRadius=interactOuterRadius-this.options.skin.width-this.options.skin.spaceWidth,this.hoopArc=this.createArc(outerRadius-this.options.skin.width,outerRadius,startAngle,endAngle)),this.trackArc=this.createArc(trackInnerRadius,trackOuterRadius,startAngle,endAngle,this.options.trackCap),this.changeArc=this.createArc(changeInnerRadius,changeOuterRadius,startAngle,startAngle,this.options.barCap),this.valueArc=this.createArc(valueInnerRadius,valueOuterRadius,startAngle,startAngle,this.options.barCap),this.interactArc=this.createArc(interactInnerRadius,interactOuterRadius,startAngle,endAngle)},Knob.prototype.drawArcs=function(clickInteraction,dragBehavior){var svg=d3.select(this.element).append("svg").attr("width",this.options.size).attr("height",this.options.size);if(this.options.bgColor&&this.drawArc(svg,this.bgArc,"bgArc",{fill:this.options.bgColor}),this.options.displayInput){var fontSize=.2*this.options.size+"px";"auto"!==this.options.fontSize&&(fontSize=this.options.fontSize+"px"),this.options.step<1&&(this.value=this.value.toFixed(1));var v=this.value;"function"==typeof this.options.inputFormatter&&(v=this.options.inputFormatter(v)),svg.append("text").attr("id","text").attr("text-anchor","middle").attr("font-size",fontSize).style("fill",this.options.textColor).text(v+this.options.unit||"").attr("transform","translate("+this.options.size/2+", "+(this.options.size/2+.06*this.options.size)+")"),this.options.subText.enabled&&(fontSize=.07*this.options.size+"px","auto"!==this.options.subText.font&&(fontSize=this.options.subText.font+"px"),svg.append("text").attr("class","sub-text").attr("text-anchor","middle").attr("font-size",fontSize).style("fill",this.options.subText.color).text(this.options.subText.text).attr("transform","translate("+this.options.size/2+", "+(this.options.size/2+.15*this.options.size)+")"))}if(this.options.scale.enabled){var radius,quantity,data,count=0,angle=0,startRadians=this.valueToRadians(this.options.min,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min),endRadians=this.valueToRadians(this.options.max,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min),diff=0;if(0===this.options.startAngle&&360===this.options.endAngle||(diff=1),"dots"===this.options.scale.type){var width=this.options.scale.width;radius=this.options.size/2-width,quantity=this.options.scale.quantity;var offset=radius+this.options.scale.width;data=d3.range(quantity).map(function(){return angle=count*(endRadians-startRadians)-Math.PI/2+startRadians,count+=1/(quantity-diff),{cx:offset+Math.cos(angle)*radius,cy:offset+Math.sin(angle)*radius,r:width}}),svg.selectAll("circle").data(data).enter().append("circle").attr({r:function(d){return d.r},cx:function(d){return d.cx},cy:function(d){return d.cy},fill:this.options.scale.color})}else if("lines"===this.options.scale.type){var height=this.options.scale.height;radius=this.options.size/2,quantity=this.options.scale.quantity,data=d3.range(quantity).map(function(){return angle=count*(endRadians-startRadians)-Math.PI/2+startRadians,count+=1/(quantity-diff),{x1:radius+Math.cos(angle)*radius,y1:radius+Math.sin(angle)*radius,x2:radius+Math.cos(angle)*(radius-height),y2:radius+Math.sin(angle)*(radius-height)}}),svg.selectAll("line").data(data).enter().append("line").attr({x1:function(d){return d.x1},y1:function(d){return d.y1},x2:function(d){return d.x2},y2:function(d){return d.y2},"stroke-width":this.options.scale.width,stroke:this.options.scale.color})}}"tron"===this.options.skin.type&&this.drawArc(svg,this.hoopArc,"hoopArc",{fill:this.options.skin.color}),this.drawArc(svg,this.trackArc,"trackArc",{fill:this.options.trackColor}),this.options.displayPrevious?this.changeElem=this.drawArc(svg,this.changeArc,"changeArc",{fill:this.options.prevBarColor}):this.changeElem=this.drawArc(svg,this.changeArc,"changeArc",{"fill-opacity":0}),this.valueElem=this.drawArc(svg,this.valueArc,"valueArc",{fill:this.options.barColor});var cursor="pointer";this.options.readOnly&&(cursor="default"),this.drawArc(svg,this.interactArc,"interactArc",{"fill-opacity":0,cursor:cursor},clickInteraction,dragBehavior)},Knob.prototype.draw=function(update){function dragInteraction(){that.inDrag=!0;var x=d3.event.x-that.options.size/2,y=d3.event.y-that.options.size/2;interaction(x,y,!1)}function clickInteraction(){that.inDrag=!1;var coords=d3.mouse(this.parentNode),x=coords[0]-that.options.size/2,y=coords[1]-that.options.size/2;interaction(x,y,!0)}function interaction(x,y,isFinal){var radians,delta,arc=Math.atan(y/x)/(Math.PI/180);if(x>=0&&0>=y||x>=0&&y>=0?delta=90:(delta=270,that.options.startAngle<0&&(delta=-90)),radians=(delta+arc)*(Math.PI/180),that.value=that.radiansToValue(radians,that.options.max,that.options.min,that.options.endAngle,that.options.startAngle),that.value>=that.options.min&&that.value<=that.options.max&&(that.value=Math.round(~~((that.value<0?-.5:.5)+that.value/that.options.step)*that.options.step*100)/100,that.options.step<1&&(that.value=that.value.toFixed(1)),update(that.value),that.valueArc.endAngle(that.valueToRadians(that.value,that.options.max,that.options.endAngle,that.options.startAngle,that.options.min)),that.valueElem.attr("d",that.valueArc),isFinal&&(that.changeArc.endAngle(that.valueToRadians(that.value,that.options.max,that.options.endAngle,that.options.startAngle,that.options.min)),that.changeElem.attr("d",that.changeArc)),that.options.displayInput)){var v=that.value;"function"==typeof that.options.inputFormatter&&(v=that.options.inputFormatter(v)),d3.select(that.element).select("#text").text(v+that.options.unit||"")}}d3.select(this.element).select("svg").remove();var that=this;that.createArcs();var dragBehavior=d3.behavior.drag().on("drag",dragInteraction).on("dragend",clickInteraction);that.drawArcs(clickInteraction,dragBehavior),that.options.animate.enabled?that.valueElem.transition().ease(that.options.animate.ease).duration(that.options.animate.duration).tween("",function(){var i=d3.interpolate(that.valueToRadians(that.options.startAngle,360),that.valueToRadians(that.value,that.options.max,that.options.endAngle,that.options.startAngle,that.options.min));return function(t){var val=i(t);that.valueElem.attr("d",that.valueArc.endAngle(val)),that.changeElem.attr("d",that.changeArc.endAngle(val))}}):(that.changeArc.endAngle(this.valueToRadians(this.value,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min)),that.changeElem.attr("d",that.changeArc),that.valueArc.endAngle(this.valueToRadians(this.value,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min)),that.valueElem.attr("d",that.valueArc))},Knob.prototype.setValue=function(newValue){if(!this.inDrag&&newValue>=this.options.min&&newValue<=this.options.max){var radians=this.valueToRadians(newValue,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min);if(this.value=Math.round(~~((0>newValue?-.5:.5)+newValue/this.options.step)*this.options.step*100)/100,this.options.step<1&&(this.value=this.value.toFixed(1)),this.changeArc.endAngle(radians),d3.select(this.element).select("#changeArc").attr("d",this.changeArc),this.valueArc.endAngle(radians),d3.select(this.element).select("#valueArc").attr("d",this.valueArc),this.options.displayInput){var v=this.value;"function"==typeof this.options.inputFormatter&&(v=this.options.inputFormatter(v)),d3.select(this.element).select("#text").text(v+this.options.unit||"")}}},ui.Knob=Knob,ui.knobDirective=function(){return{restrict:"E",scope:{value:"=",options:"="},link:function(scope,element){scope.value=scope.value||0;var defaultOptions={skin:{type:"simple",width:10,color:"rgba(255,0,0,.5)",spaceWidth:5},animate:{enabled:!0,duration:1e3,ease:"bounce"},size:200,startAngle:0,endAngle:360,unit:"",displayInput:!0,inputFormatter:function(v){return v},readOnly:!1,trackWidth:50,barWidth:50,trackColor:"rgba(0,0,0,0)",barColor:"rgba(255,0,0,.5)",prevBarColor:"rgba(0,0,0,0)",textColor:"#222",barCap:0,trackCap:0,fontSize:"auto",subText:{enabled:!1,text:"",color:"gray",font:"auto"},bgColor:"",bgFull:!1,scale:{enabled:!1,type:"lines",color:"gray",width:4,quantity:20,height:10,spaceWidth:15},step:1,displayPrevious:!1,min:0,max:100,dynamicOptions:!1};scope.options=angular.merge(defaultOptions,scope.options);var knob=new ui.Knob(element[0],scope.value,scope.options);if(scope.$watch("value",function(newValue,oldValue){null===newValue&&"undefined"==typeof newValue||"undefined"==typeof oldValue||newValue===oldValue||(knob.setValue(newValue),drawKnob())}),scope.options.dynamicOptions){var isFirstWatchOnOptions=!0;scope.$watch("options",function(){if(isFirstWatchOnOptions)isFirstWatchOnOptions=!1;else{var newOptions=angular.merge(defaultOptions,scope.options);knob=new ui.Knob(element[0],scope.value,newOptions),drawKnob()}},!0)}var drawKnob=function(){knob.draw(function(value){scope.$apply(function(){scope.value=value})})};drawKnob()}}},angular.module("ui.knob",[]).directive("uiKnob",ui.knobDirective)}();
\ No newline at end of file
+"use strict";!function(){var ui={},Knob=function(element,value,options){this.element=element,this.value=value,this.options=options,this.inDrag=!1};Knob.prototype.valueToRadians=function(value,valueEnd,angleEnd,angleStart,valueStart){return valueEnd=valueEnd||100,valueStart=valueStart||0,angleEnd=angleEnd||360,angleStart=angleStart||0,Math.PI/180*((value-valueStart)*(angleEnd-angleStart)/(valueEnd-valueStart)+angleStart)},Knob.prototype.radiansToValue=function(radians,valueEnd,valueStart,angleEnd,angleStart){return valueEnd=valueEnd||100,valueStart=valueStart||0,angleEnd=angleEnd||360,angleStart=angleStart||0,(180/Math.PI*radians-angleStart)*(valueEnd-valueStart)/(angleEnd-angleStart)+valueStart},Knob.prototype.createArc=function(innerRadius,outerRadius,startAngle,endAngle,cornerRadius){var arc=d3.svg.arc().innerRadius(innerRadius).outerRadius(outerRadius).startAngle(startAngle).endAngle(endAngle).cornerRadius(cornerRadius);return arc},Knob.prototype.drawArc=function(svg,arc,label,style,click,drag){var elem=svg.append("path").attr("id",label).attr("d",arc).style(style).attr("transform","translate("+this.options.size/2+", "+this.options.size/2+")");return this.options.readOnly===!1&&(click&&elem.on("click",click),drag&&elem.call(drag)),elem},Knob.prototype.createArcs=function(){var outerRadius=parseInt(this.options.size/2,10),startAngle=this.valueToRadians(this.options.startAngle,360),endAngle=this.valueToRadians(this.options.endAngle,360);this.options.scale.enabled&&(outerRadius-=this.options.scale.width+this.options.scale.spaceWidth);var diff,trackInnerRadius=outerRadius-this.options.trackWidth,changeInnerRadius=outerRadius-this.options.barWidth,valueInnerRadius=outerRadius-this.options.barWidth,interactInnerRadius=1,trackOuterRadius=outerRadius,changeOuterRadius=outerRadius,valueOuterRadius=outerRadius,interactOuterRadius=outerRadius;this.options.barWidth>this.options.trackWidth?(diff=(this.options.barWidth-this.options.trackWidth)/2,trackInnerRadius-=diff,trackOuterRadius-=diff):this.options.barWidth<this.options.trackWidth&&(diff=(this.options.trackWidth-this.options.barWidth)/2,changeOuterRadius-=diff,valueOuterRadius-=diff,changeInnerRadius-=diff,valueInnerRadius-=diff),this.options.bgColor&&(this.options.bgFull?this.bgArc=this.createArc(0,outerRadius,0,2*Math.PI):this.bgArc=this.createArc(0,outerRadius,startAngle,endAngle)),"tron"===this.options.skin.type&&(trackOuterRadius=trackOuterRadius-this.options.skin.width-this.options.skin.spaceWidth,changeOuterRadius=changeOuterRadius-this.options.skin.width-this.options.skin.spaceWidth,valueOuterRadius=valueOuterRadius-this.options.skin.width-this.options.skin.spaceWidth,interactOuterRadius=interactOuterRadius-this.options.skin.width-this.options.skin.spaceWidth,this.hoopArc=this.createArc(outerRadius-this.options.skin.width,outerRadius,startAngle,endAngle)),this.trackArc=this.createArc(trackInnerRadius,trackOuterRadius,startAngle,endAngle,this.options.trackCap),this.changeArc=this.createArc(changeInnerRadius,changeOuterRadius,startAngle,startAngle,this.options.barCap),this.valueArc=this.createArc(valueInnerRadius,valueOuterRadius,startAngle,startAngle,this.options.barCap),this.interactArc=this.createArc(interactInnerRadius,interactOuterRadius,startAngle,endAngle)},Knob.prototype.drawArcs=function(clickInteraction,dragBehavior){var svg=d3.select(this.element).append("svg").attr("width",this.options.size).attr("height",this.options.size);if(this.options.bgColor&&this.drawArc(svg,this.bgArc,"bgArc",{fill:this.options.bgColor}),this.options.displayInput){var fontSize=.2*this.options.size+"px";"auto"!==this.options.fontSize&&(fontSize=this.options.fontSize+"px"),this.options.step<1&&(this.value=this.value.toFixed(1));var v=this.value;"function"==typeof this.options.inputFormatter&&(v=this.options.inputFormatter(v)),svg.append("text").attr("id","text").attr("text-anchor","middle").attr("font-size",fontSize).style("fill",this.options.textColor).text(v+this.options.unit||"").attr("transform","translate("+this.options.size/2+", "+(this.options.size/2+.06*this.options.size)+")"),this.options.subText.enabled&&(fontSize=.07*this.options.size+"px","auto"!==this.options.subText.font&&(fontSize=this.options.subText.font+"px"),svg.append("text").attr("class","sub-text").attr("text-anchor","middle").attr("font-size",fontSize).style("fill",this.options.subText.color).text(this.options.subText.text).attr("transform","translate("+this.options.size/2+", "+(this.options.size/2+.15*this.options.size)+")"))}if(this.options.scale.enabled){var radius,quantity,data,count=0,angle=0,startRadians=this.valueToRadians(this.options.min,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min),endRadians=this.valueToRadians(this.options.max,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min),diff=0;if((0!==this.options.startAngle||360!==this.options.endAngle)&&(diff=1),"dots"===this.options.scale.type){var width=this.options.scale.width;radius=this.options.size/2-width,quantity=this.options.scale.quantity;var offset=radius+this.options.scale.width;data=d3.range(quantity).map(function(){return angle=count*(endRadians-startRadians)-Math.PI/2+startRadians,count+=1/(quantity-diff),{cx:offset+Math.cos(angle)*radius,cy:offset+Math.sin(angle)*radius,r:width}}),svg.selectAll("circle").data(data).enter().append("circle").attr({r:function(d){return d.r},cx:function(d){return d.cx},cy:function(d){return d.cy},fill:this.options.scale.color})}else if("lines"===this.options.scale.type){var height=this.options.scale.height;radius=this.options.size/2,quantity=this.options.scale.quantity,data=d3.range(quantity).map(function(){return angle=count*(endRadians-startRadians)-Math.PI/2+startRadians,count+=1/(quantity-diff),{x1:radius+Math.cos(angle)*radius,y1:radius+Math.sin(angle)*radius,x2:radius+Math.cos(angle)*(radius-height),y2:radius+Math.sin(angle)*(radius-height)}}),svg.selectAll("line").data(data).enter().append("line").attr({x1:function(d){return d.x1},y1:function(d){return d.y1},x2:function(d){return d.x2},y2:function(d){return d.y2},"stroke-width":this.options.scale.width,stroke:this.options.scale.color})}}"tron"===this.options.skin.type&&this.drawArc(svg,this.hoopArc,"hoopArc",{fill:this.options.skin.color}),this.drawArc(svg,this.trackArc,"trackArc",{fill:this.options.trackColor}),this.options.displayPrevious?this.changeElem=this.drawArc(svg,this.changeArc,"changeArc",{fill:this.options.prevBarColor}):this.changeElem=this.drawArc(svg,this.changeArc,"changeArc",{"fill-opacity":0}),this.valueElem=this.drawArc(svg,this.valueArc,"valueArc",{fill:this.options.barColor});var cursor="pointer";this.options.readOnly&&(cursor="default"),this.drawArc(svg,this.interactArc,"interactArc",{"fill-opacity":0,cursor:cursor},clickInteraction,dragBehavior)},Knob.prototype.draw=function(update){function dragInteraction(){that.inDrag=!0;var x=d3.event.x-that.options.size/2,y=d3.event.y-that.options.size/2;interaction(x,y,!1)}function clickInteraction(){that.inDrag=!1;var coords=d3.mouse(this.parentNode),x=coords[0]-that.options.size/2,y=coords[1]-that.options.size/2;interaction(x,y,!0)}function interaction(x,y,isFinal){var radians,delta,arc=Math.atan(y/x)/(Math.PI/180);if(x>=0&&0>=y||x>=0&&y>=0?delta=90:(delta=270,that.options.startAngle<0&&(delta=-90)),radians=(delta+arc)*(Math.PI/180),that.value=that.radiansToValue(radians,that.options.max,that.options.min,that.options.endAngle,that.options.startAngle),that.value>=that.options.min&&that.value<=that.options.max&&(that.value=Math.round(~~((that.value<0?-.5:.5)+that.value/that.options.step)*that.options.step*100)/100,that.options.step<1&&(that.value=that.value.toFixed(1)),update(that.value),that.valueArc.endAngle(that.valueToRadians(that.value,that.options.max,that.options.endAngle,that.options.startAngle,that.options.min)),that.valueElem.attr("d",that.valueArc),isFinal&&(that.changeArc.endAngle(that.valueToRadians(that.value,that.options.max,that.options.endAngle,that.options.startAngle,that.options.min)),that.changeElem.attr("d",that.changeArc)),that.options.displayInput)){var v=that.value;"function"==typeof that.options.inputFormatter&&(v=that.options.inputFormatter(v)),d3.select(that.element).select("#text").text(v+that.options.unit||"")}}d3.select(this.element).select("svg").remove();var that=this;that.createArcs();var dragBehavior=d3.behavior.drag().on("drag",dragInteraction).on("dragend",clickInteraction);that.drawArcs(clickInteraction,dragBehavior),that.options.animate.enabled?that.valueElem.transition().ease(that.options.animate.ease).duration(that.options.animate.duration).tween("",function(){var i=d3.interpolate(that.valueToRadians(that.options.startAngle,360),that.valueToRadians(that.value,that.options.max,that.options.endAngle,that.options.startAngle,that.options.min));return function(t){var val=i(t);that.valueElem.attr("d",that.valueArc.endAngle(val)),that.changeElem.attr("d",that.changeArc.endAngle(val))}}):(that.changeArc.endAngle(this.valueToRadians(this.value,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min)),that.changeElem.attr("d",that.changeArc),that.valueArc.endAngle(this.valueToRadians(this.value,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min)),that.valueElem.attr("d",that.valueArc))},Knob.prototype.setValue=function(newValue){if(!this.inDrag&&this.value>=this.options.min&&this.value<=this.options.max){var radians=this.valueToRadians(newValue,this.options.max,this.options.endAngle,this.options.startAngle,this.options.min);if(this.value=Math.round(~~((0>newValue?-.5:.5)+newValue/this.options.step)*this.options.step*100)/100,this.options.step<1&&(this.value=this.value.toFixed(1)),this.changeArc.endAngle(radians),d3.select(this.element).select("#changeArc").attr("d",this.changeArc),this.valueArc.endAngle(radians),d3.select(this.element).select("#valueArc").attr("d",this.valueArc),this.options.displayInput){var v=this.value;"function"==typeof this.options.inputFormatter&&(v=this.options.inputFormatter(v)),d3.select(this.element).select("#text").text(v+this.options.unit||"")}}},ui.Knob=Knob,ui.knobDirective=function(){return{restrict:"E",scope:{value:"=",options:"="},link:function(scope,element){scope.value=scope.value||0;var defaultOptions={skin:{type:"simple",width:10,color:"rgba(255,0,0,.5)",spaceWidth:5},animate:{enabled:!0,duration:1e3,ease:"bounce"},size:200,startAngle:0,endAngle:360,unit:"",displayInput:!0,inputFormatter:function(v){return v},readOnly:!1,trackWidth:50,barWidth:50,trackColor:"rgba(0,0,0,0)",barColor:"rgba(255,0,0,.5)",prevBarColor:"rgba(0,0,0,0)",textColor:"#222",barCap:0,trackCap:0,fontSize:"auto",subText:{enabled:!1,text:"",color:"gray",font:"auto"},bgColor:"",bgFull:!1,scale:{enabled:!1,type:"lines",color:"gray",width:4,quantity:20,height:10,spaceWidth:15},step:1,displayPrevious:!1,min:0,max:100,dynamicOptions:!1};scope.options=angular.merge(defaultOptions,scope.options);var knob=new ui.Knob(element[0],scope.value,scope.options);if(scope.$watch("value",function(newValue,oldValue){null===newValue&&"undefined"==typeof newValue||"undefined"==typeof oldValue||newValue===oldValue||knob.setValue(newValue)}),scope.options.dynamicOptions){var isFirstWatchOnOptions=!0;scope.$watch("options",function(){if(isFirstWatchOnOptions)isFirstWatchOnOptions=!1;else{var newOptions=angular.merge(defaultOptions,scope.options);knob=new ui.Knob(element[0],scope.value,newOptions),drawKnob()}},!0)}var drawKnob=function(){knob.draw(function(value){scope.$apply(function(){scope.value=value})})};drawKnob()}}},angular.module("ui.knob",[]).directive("uiKnob",ui.knobDirective)}();
\ No newline at end of file
diff --git a/src/ng-knob.js b/src/ng-knob.js
index 5f5dd16..22ef1da 100644
--- a/src/ng-knob.js
+++ b/src/ng-knob.js
@@ -140,7 +140,7 @@
       if(this.options.step < 1) {
         this.value = this.value.toFixed(1);
       }
-      var v = this.value; 
+      var v = this.value;
       if (typeof this.options.inputFormatter === "function"){
           v = this.options.inputFormatter(v);
       }
@@ -327,7 +327,7 @@
           that.changeElem.attr('d', that.changeArc);
         }
         if(that.options.displayInput) {
-          var v = that.value; 
+          var v = that.value;
           if (typeof that.options.inputFormatter === "function"){
             v = that.options.inputFormatter(v);
           }
@@ -340,7 +340,7 @@
    *   Set a value
    */
   Knob.prototype.setValue = function(newValue) {
-    if ((!this.inDrag) && newValue >= this.options.min && newValue <= this.options.max) {
+    if ((!this.inDrag) && this.value >= this.options.min && this.value <= this.options.max) {
       var radians = this.valueToRadians(newValue, this.options.max, this.options.endAngle, this.options.startAngle, this.options.min);
       this.value = Math.round(((~~ (((newValue < 0) ? -0.5 : 0.5) + (newValue/this.options.step))) * this.options.step) * 100) / 100;
       if(this.options.step < 1) {
@@ -430,7 +430,6 @@
         scope.$watch('value', function(newValue, oldValue) {
           if((newValue !== null || typeof newValue !== 'undefined') && typeof oldValue !== 'undefined' && newValue !== oldValue) {
             knob.setValue(newValue);
-			drawKnob();
           }
         });