diff --git a/web/Makefile b/web/Makefile
index 8417916d..e5c7e287 100644
--- a/web/Makefile
+++ b/web/Makefile
@@ -11,6 +11,7 @@ all:
 	cp js/main.js /var/www/js
 	cp js/addtohomescreen.min.js /var/www/js
 	cp js/svg.min.js /var/www/js
+	cp js/NoSleep.min.js /var/www/js
 	mkdir -p /var/www/img
 	cp img/logo*.png /var/www/img
 	cp img/screen*.png /var/www/img
diff --git a/web/index.html b/web/index.html
index 491f1eb2..66e17266 100644
--- a/web/index.html
+++ b/web/index.html
@@ -38,6 +38,7 @@
 
 	<link rel="stylesheet" type="text/css" href="css/addtohomescreen.css">
 	<script src="js/svg.min.js"></script>
+	<script src="js/NoSleep.min.js"></script>
 	<script src="js/addtohomescreen.min.js"></script>
 	<script>
 		addToHomescreen({ displayPace: 480 });
diff --git a/web/js/NoSleep.min.js b/web/js/NoSleep.min.js
new file mode 100644
index 00000000..654e1d08
--- /dev/null
+++ b/web/js/NoSleep.min.js
@@ -0,0 +1,2 @@
+// NoSleep.min.js v0.5.0 - git.io/vfn01 - Rich Tibbett - MIT license
+!function(A){function e(A,e,o){var t=document.createElement("source");t.src=o,t.type="video/"+e,A.appendChild(t)}var o={Android:/Android/gi.test(navigator.userAgent),iOS:/AppleWebKit/.test(navigator.userAgent)&&/Mobile\/\w+/.test(navigator.userAgent)},t={WebM:"data:video/webm;base64,GkXfo0AgQoaBAUL3gQFC8oEEQvOBCEKCQAR3ZWJtQoeBAkKFgQIYU4BnQI0VSalmQCgq17FAAw9CQE2AQAZ3aGFtbXlXQUAGd2hhbW15RIlACECPQAAAAAAAFlSua0AxrkAu14EBY8WBAZyBACK1nEADdW5khkAFVl9WUDglhohAA1ZQOIOBAeBABrCBCLqBCB9DtnVAIueBAKNAHIEAAIAwAQCdASoIAAgAAUAmJaQAA3AA/vz0AAA=",MP4:"data:video/mp4;base64,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"},i=function(){return o.iOS?this.noSleepTimer=null:o.Android&&(this.noSleepVideo=document.createElement("video"),this.noSleepVideo.setAttribute("loop",""),e(this.noSleepVideo,"webm",t.WebM),e(this.noSleepVideo,"mp4",t.MP4)),this};i.prototype.enable=function(A){o.iOS?(this.disable(),this.noSleepTimer=window.setInterval(function(){window.location.href='/',window.setTimeout(window.stop,0)},A||15e3)):o.Android&&this.noSleepVideo.play()},i.prototype.disable=function(){o.iOS?this.noSleepTimer&&(window.clearInterval(this.noSleepTimer),this.noSleepTimer=null):o.Android&&this.noSleepVideo.pause()},A.NoSleep=i}(this);
diff --git a/web/plates/js/gps.js b/web/plates/js/gps.js
index 018783f0..de6c1021 100644
--- a/web/plates/js/gps.js
+++ b/web/plates/js/gps.js
@@ -149,6 +149,8 @@ function GPSCtrl($rootScope, $scope, $state, $http, $interval) {
             $scope.ahrs_heading = Math.round(situation.AHRSGyroHeading.toFixed(0));
             if ($scope.ahrs_heading > 360) {
                 $scope.ahrs_heading = "---";
+            } else if ($scope.ahrs_heading < 0.5) {
+                $scope.ahrs_heading = 360;
             }
             $scope.ahrs_pitch = situation.AHRSPitch.toFixed(1);
             if ($scope.ahrs_pitch > 360) {
@@ -314,12 +316,16 @@ function GPSCtrl($rootScope, $scope, $state, $http, $interval) {
 
     // GPS/AHRS Controller tasks go here
     var ahrs = new AHRSRenderer("ahrs_display");
+    var noSleep = new NoSleep();
 
     $scope.hideClick = function() {
         $scope.isHidden = !$scope.isHidden;
         var disp = "block";
         if ($scope.isHidden) {
             disp = "none";
+            noSleep.enable();
+        } else {
+            noSleep.disable();
         }
         var hiders = document.querySelectorAll(".hider");