diff --git a/hardware/sensehatsim/examples/Clock.json b/hardware/sensehatsim/examples/Clock.json
index 54525109..a067aab6 100644
--- a/hardware/sensehatsim/examples/Clock.json
+++ b/hardware/sensehatsim/examples/Clock.json
@@ -1 +1,56 @@
-[{"id":"8b346a30.651a88","type":"rpi-sensehat out","z":"7756eff1.08d0a","name":"","x":530,"y":220,"wires":[]},{"id":"c2e7a15d.237bd","type":"function","z":"7756eff1.08d0a","name":"Simple graphical clock","func":"\n// array to hold \"random\" pixels\nvar ranNums = [];\n\n// create a non-overlapping array of random numbers 0-8\nfunction rerand() {\n    var nums = [0,1,2,3,4,5,6,7,8];\n    var i = nums.length;\n    var j;\n    ranNums = [];\n    while (i--) {\n        j = Math.floor(Math.random() * (i+1));\n        ranNums.push(nums[j]);\n        nums.splice(j,1);\n    }\n}\n\n// Get the hours and minutes and split into tens and units\nvar d = new Date();\nvar s = d.getSeconds();\nvar su = s%4;\nif (su === 0) {\n    var h = d.getHours();\n    var m = d.getMinutes();\n    var hu = h%10;\n    h = parseInt(h/10);\n    var mu = m%10;\n    m = parseInt(m/10);\n    \n    // Do the tens of hours (red)\n    rerand();\n    node.send({payload:\"1-3,1-3,0,0,0\"});\n    for (var i=0; i<h; i++) {\n        node.send({payload:(1+ranNums[i]%3)+\",\"+(1+parseInt(ranNums[i]/3))+\",255,0,0\"});\n    }\n    \n    // Do the units of hours (green)\n    rerand();\n    node.send({payload:\"4-6,1-3,0,0,0\"});\n    for (var i=0; i<hu; i++) {\n        node.send({payload:(4+ranNums[i]%3)+\",\"+(1+parseInt(ranNums[i]/3))+\",0,255,0\"});\n    }\n    \n    // Do the tens of minutes (yellow)\n    rerand();\n    node.send({payload:\"1-3,4-6,0,0,0\"});\n    for (var i=0; i<m; i++) {\n        node.send({payload:(1+ranNums[i]%3)+\",\"+(4+parseInt(ranNums[i]/3))+\",255,255,0\"});\n    }\n    \n    // Do the unit of minutes (blue)\n    rerand();\n    node.send({payload:\"4-6,4-6,0,0,0\"});\n    for (var i=0; i<mu; i++) {\n        node.send({payload:(4+ranNums[i]%3)+\",\"+(4+parseInt(ranNums[i]/3))+\",0,0,255\"});\n    }\n    \n}\nnode.send({payload:\"0,0,\"+(su===0?\"purple\":\"off\")+\",7,0,\"+(su===1?\"purple\":\"off\")+\",7,7,\"+(su===2?\"purple\":\"off\")+\",0,7,\"+(su===3?\"purple\":\"off\")})\n\n\n// nothing left to do\nreturn null;","outputs":1,"noerr":0,"x":320,"y":220,"wires":[["8b346a30.651a88"]]},{"id":"fc3808df.6cbcf8","type":"comment","z":"7756eff1.08d0a","name":"Simple graphical clock for Sense Hat","info":"Generates a graphical clock, showing hours and minutes. \n\nHours are shown by the red and green pixels, minutes\nare the yellow and blue pixels.\n\nUses the local time of the Pi - you may need to set your local\ntimezone using\n\n    sudo dpkg-reconfigure tzdata\n","x":210,"y":180,"wires":[]},{"id":"f33ea1a7.27216","type":"inject","z":"7756eff1.08d0a","name":"","topic":"","payload":"","payloadType":"date","repeat":"1","crontab":"","once":true,"x":120,"y":220,"wires":[["c2e7a15d.237bd"]]}]
+[
+    {
+        "id": "8b346a30.651a88",
+        "type": "rpi-sensehatsim out",
+        "z": "7756eff1.08d0a",
+        "name": "",
+        "x": 530,
+        "y": 220,
+        "wires": []
+    },
+    {
+        "id": "c2e7a15d.237bd",
+        "type": "function",
+        "z": "7756eff1.08d0a",
+        "name": "Simple graphical clock",
+        "func": "\n// array to hold \"random\" pixels\nvar ranNums = [];\n\n// create a non-overlapping array of random numbers 0-8\nfunction rerand() {\n    var nums = [0,1,2,3,4,5,6,7,8];\n    var i = nums.length;\n    var j;\n    ranNums = [];\n    while (i--) {\n        j = Math.floor(Math.random() * (i+1));\n        ranNums.push(nums[j]);\n        nums.splice(j,1);\n    }\n}\n\n// Get the hours and minutes and split into tens and units\nvar d = new Date();\nvar s = d.getSeconds();\nvar su = s%4;\nif (su === 0) {\n    var h = d.getHours();\n    var m = d.getMinutes();\n    var hu = h%10;\n    h = parseInt(h/10);\n    var mu = m%10;\n    m = parseInt(m/10);\n    \n    // Do the tens of hours (red)\n    rerand();\n    node.send({payload:\"1-3,1-3,0,0,0\"});\n    for (var i=0; i<h; i++) {\n        node.send({payload:(1+ranNums[i]%3)+\",\"+(1+parseInt(ranNums[i]/3))+\",255,0,0\"});\n    }\n    \n    // Do the units of hours (green)\n    rerand();\n    node.send({payload:\"4-6,1-3,0,0,0\"});\n    for (var i=0; i<hu; i++) {\n        node.send({payload:(4+ranNums[i]%3)+\",\"+(1+parseInt(ranNums[i]/3))+\",0,255,0\"});\n    }\n    \n    // Do the tens of minutes (yellow)\n    rerand();\n    node.send({payload:\"1-3,4-6,0,0,0\"});\n    for (var i=0; i<m; i++) {\n        node.send({payload:(1+ranNums[i]%3)+\",\"+(4+parseInt(ranNums[i]/3))+\",255,255,0\"});\n    }\n    \n    // Do the unit of minutes (blue)\n    rerand();\n    node.send({payload:\"4-6,4-6,0,0,0\"});\n    for (var i=0; i<mu; i++) {\n        node.send({payload:(4+ranNums[i]%3)+\",\"+(4+parseInt(ranNums[i]/3))+\",0,0,255\"});\n    }\n    \n}\nnode.send({payload:\"0,0,\"+(su===0?\"purple\":\"off\")+\",7,0,\"+(su===1?\"purple\":\"off\")+\",7,7,\"+(su===2?\"purple\":\"off\")+\",0,7,\"+(su===3?\"purple\":\"off\")})\n\n\n// nothing left to do\nreturn null;",
+        "outputs": 1,
+        "noerr": 0,
+        "x": 320,
+        "y": 220,
+        "wires": [
+            [
+                "8b346a30.651a88"
+            ]
+        ]
+    },
+    {
+        "id": "fc3808df.6cbcf8",
+        "type": "comment",
+        "z": "7756eff1.08d0a",
+        "name": "Simple graphical clock for Sense Hat",
+        "info": "Generates a graphical clock, showing hours and minutes. \n\nHours are shown by the red and green pixels, minutes\nare the yellow and blue pixels.\n\nUses the local time of the Pi - you may need to set your local\ntimezone using\n\n    sudo dpkg-reconfigure tzdata\n",
+        "x": 210,
+        "y": 180,
+        "wires": []
+    },
+    {
+        "id": "f33ea1a7.27216",
+        "type": "inject",
+        "z": "7756eff1.08d0a",
+        "name": "",
+        "topic": "",
+        "payload": "",
+        "payloadType": "date",
+        "repeat": "1",
+        "crontab": "",
+        "once": true,
+        "x": 120,
+        "y": 220,
+        "wires": [
+            [
+                "c2e7a15d.237bd"
+            ]
+        ]
+    }
+]
diff --git a/hardware/sensehatsim/examples/Compass.json b/hardware/sensehatsim/examples/Compass.json
index c37ea4c0..049ef314 100644
--- a/hardware/sensehatsim/examples/Compass.json
+++ b/hardware/sensehatsim/examples/Compass.json
@@ -1 +1,53 @@
-[{"id":"104a54e7.6656cb","type":"rpi-sensehat out","z":"7756eff1.08d0a","name":"","x":470,"y":300,"wires":[]},{"id":"a3786fbb.b3ff9","type":"rpi-sensehat in","z":"7756eff1.08d0a","name":"","motion":true,"env":false,"stick":false,"x":120,"y":300,"wires":[["931798d.9640d68"]]},{"id":"931798d.9640d68","type":"function","z":"7756eff1.08d0a","name":"Compass","func":"// Based on the Compass example provided by\n// the Sense HAT python library\n// https://github.com/RPi-Distro/python-sense-hat/tree/master/examples\n\nvar led_loop = [4, 5, 6, 7, 15, 23, 31, 39, 47, 55, 63, 62, 61, 60, 59, 58, 57, 56, 48, 40, 32, 24, 16, 8, 0, 1, 2, 3];\nvar led_degree_ratio = led_loop.length / 360.0;\nvar dir = (360 - msg.payload.compass)%360;\n\nfunction getXY(dir) {\n    var led_index = Math.floor(led_degree_ratio * (dir%360));\n    var offset = led_loop[led_index];\n    return [offset % 8,Math.floor(offset / 8)];\n}\n\nvar previous = context.get('previous');\nmsg.payload = '';\n\nvar position = getXY(dir);\nif (!previous || position[0] != previous[0][0] || position[1] != previous[0][1]) {\n    if (previous) {\n        msg.payload = previous[0][0]+\",\"+previous[0][1]+\",off,\"+\n                      previous[1][0]+\",\"+previous[1][1]+\",off,\";\n    } else {\n        msg.payload = \"*,*,off,\";\n    }\n    previous = [\n        position,\n        getXY(dir+180)\n    ];\n    msg.payload += previous[0][0]+\",\"+previous[0][1]+\",red,\"+\n                  previous[1][0]+\",\"+previous[1][1]+\",white\"\n    \n    context.set('previous',previous);\n    return msg;\n}\nreturn null;\n\n","outputs":1,"noerr":0,"x":280,"y":300,"wires":[["104a54e7.6656cb"]]},{"id":"434680a8.c2e54","type":"comment","z":"7756eff1.08d0a","name":"Simple compass for Sense Hat","info":"Generates a compass, showing north (red) and south (white).\n\nBased on the python example provided with the Sense Hat: https://github.com/RPi-Distro/python-sense-hat/tree/master/examples\n\nThe accuracy of the compass will depend on callibrating the Sense Hat\ninternal compass. Search the Sense Hat forums for a guide on how to\ndo this.\n","x":190,"y":260,"wires":[]}]
+[
+    {
+        "id": "104a54e7.6656cb",
+        "type": "rpi-sensehatsim out",
+        "z": "7756eff1.08d0a",
+        "name": "",
+        "x": 470,
+        "y": 300,
+        "wires": []
+    },
+    {
+        "id": "a3786fbb.b3ff9",
+        "type": "rpi-sensehatsim in",
+        "z": "7756eff1.08d0a",
+        "name": "",
+        "motion": true,
+        "env": false,
+        "stick": false,
+        "x": 120,
+        "y": 300,
+        "wires": [
+            [
+                "931798d.9640d68"
+            ]
+        ]
+    },
+    {
+        "id": "931798d.9640d68",
+        "type": "function",
+        "z": "7756eff1.08d0a",
+        "name": "Compass",
+        "func": "// Based on the Compass example provided by\n// the Sense HAT python library\n// https://github.com/RPi-Distro/python-sense-hat/tree/master/examples\n\nvar led_loop = [4, 5, 6, 7, 15, 23, 31, 39, 47, 55, 63, 62, 61, 60, 59, 58, 57, 56, 48, 40, 32, 24, 16, 8, 0, 1, 2, 3];\nvar led_degree_ratio = led_loop.length / 360.0;\nvar dir = (360 - msg.payload.compass)%360;\n\nfunction getXY(dir) {\n    var led_index = Math.floor(led_degree_ratio * (dir%360));\n    var offset = led_loop[led_index];\n    return [offset % 8,Math.floor(offset / 8)];\n}\n\nvar previous = context.get('previous');\nmsg.payload = '';\n\nvar position = getXY(dir);\nif (!previous || position[0] != previous[0][0] || position[1] != previous[0][1]) {\n    if (previous) {\n        msg.payload = previous[0][0]+\",\"+previous[0][1]+\",off,\"+\n                      previous[1][0]+\",\"+previous[1][1]+\",off,\";\n    } else {\n        msg.payload = \"*,*,off,\";\n    }\n    previous = [\n        position,\n        getXY(dir+180)\n    ];\n    msg.payload += previous[0][0]+\",\"+previous[0][1]+\",red,\"+\n                  previous[1][0]+\",\"+previous[1][1]+\",white\"\n    \n    context.set('previous',previous);\n    return msg;\n}\nreturn null;\n\n",
+        "outputs": 1,
+        "noerr": 0,
+        "x": 280,
+        "y": 300,
+        "wires": [
+            [
+                "104a54e7.6656cb"
+            ]
+        ]
+    },
+    {
+        "id": "434680a8.c2e54",
+        "type": "comment",
+        "z": "7756eff1.08d0a",
+        "name": "Simple compass for Sense Hat",
+        "info": "Generates a compass, showing north (red) and south (white).\n\nBased on the python example provided with the Sense Hat: https://github.com/RPi-Distro/python-sense-hat/tree/master/examples\n\nThe accuracy of the compass will depend on callibrating the Sense Hat\ninternal compass. Search the Sense Hat forums for a guide on how to\ndo this.\n",
+        "x": 190,
+        "y": 260,
+        "wires": []
+    }
+]