This flow shows an example of how to parse a Twitter stream for the @Cheerlights supported colours and creates an output for each one found.
These are then passed to a rate limiting node to allow each colour to be shown in turn. A trigger node is then used to add "black" to turn off the LEDs after 4 minutes if not re-triggered beforehand.
The colour name to r,g,b and hex values can be used to drive other RGB LED type devices as appropriate.
| [{"id":"55005fc7.aaffa","type":"twitter in","twitter":"","tags":"cheerlights","user":"false","name":"cheerlights","topic":"tweets","x":109,"y":562,"z":"c098fa53.5e7928","wires":[["6c7e8105.93818","c7068058.38f98"]]},{"id":"6c7e8105.93818","type":"function","name":"parse @Cheerlight colours","func":"msg.payload = msg.payload.toLowerCase();\n\nvar result = msg.payload.match(\n/red|green|blue|cyan|white|warmwhite|purple|magenta|yellow|orange|black|pink|oldlace/g);\n\n// red (#FF0000)\n// green (#008000)\n// blue (#0000FF)\n// cyan (#00FFFF)\n// white (#FFFFFF)\n// warmwhite (#FDF5E6)\n// purple (#800080)\n// magenta (#FF00FF)\n// yellow (#FFFF00)\n// orange (#FFA500)\n\nconsole.log(result);\n\nmsg = [];\nfor (var colour in result) {\n msg.push({payload:result[colour]});\n}\n// and clear down to black afterwards\n//msg.push({payload:\"black\"});\n\n//console.log(msg);\nreturn [msg];","outputs":1,"x":229.0000114440918,"y":461.9999809265137,"z":"c098fa53.5e7928","wires":[["2571f114.da8e0e"]]},{"id":"c7068058.38f98","type":"debug","name":"","active":false,"complete":false,"x":303.9999694824219,"y":534,"z":"c098fa53.5e7928","wires":[]},{"id":"2571f114.da8e0e","type":"delay","name":"","pauseType":"rate","timeout":"5","timeoutUnits":"seconds","rate":"2","rateUnits":"minute","randomFirst":"1","randomLast":"5","randomUnits":"seconds","x":442.0000305175781,"y":463,"z":"c098fa53.5e7928","wires":[["a468cfa0.5b973"]]},{"id":"a468cfa0.5b973","type":"trigger","op1":"1","op2":"black","op1type":"pay","op2type":"val","duration":"4","extend":"true","units":"min","name":"","x":510,"y":532,"z":"c098fa53.5e7928","wires":[["4ce12ff1.b31ed","d7567a7d.28a988","b64775a2.49b888"]]},{"id":"4ce12ff1.b31ed","type":"function","name":"Convert CSS Colour Name to hex and r,g,b values","func":"// outputs: 1\n\nvar colors = {\n \"aqua\": \"#00ffff\",\n \"aliceblue\": \"#f0f8ff\",\n \"antiquewhite\": \"#faebd7\",\n \"black\": \"#000000\",\n \"off\": \"#000000\",\n \"blue\": \"#0000ff\",\n \"cyan\": \"#00ffff\",\n \"darkblue\": \"#00008b\",\n \"darkcyan\": \"#008b8b\",\n \"darkgreen\": \"#006400\",\n \"darkturquoise\": \"#00ced1\",\n \"deepskyblue\": \"#00bfff\",\n \"green\": \"#008000\",\n \"lime\": \"#00ff00\",\n \"mediumblue\": \"#0000cd\",\n \"mediumspringgreen\": \"#00fa9a\",\n \"navy\": \"#000080\",\n \"springgreen\": \"#00ff7f\",\n \"teal\": \"#008080\",\n \"midnightblue\": \"#191970\",\n \"dodgerblue\": \"#1e90ff\",\n \"lightseagreen\": \"#20b2aa\",\n \"forestgreen\": \"#228b22\",\n \"seagreen\": \"#2e8b57\",\n \"darkslategray\": \"#2f4f4f\",\n \"darkslategrey\": \"#2f4f4f\",\n \"limegreen\": \"#32cd32\",\n \"mediumseagreen\": \"#3cb371\",\n \"turquoise\": \"#40e0d0\",\n \"royalblue\": \"#4169e1\",\n \"steelblue\": \"#4682b4\",\n \"darkslateblue\": \"#483d8b\",\n \"mediumturquoise\": \"#48d1cc\",\n \"indigo\": \"#4b0082\",\n \"darkolivegreen\": \"#556b2f\",\n \"cadetblue\": \"#5f9ea0\",\n \"cornflowerblue\": \"#6495ed\",\n \"mediumaquamarine\": \"#66cdaa\",\n \"dimgray\": \"#696969\",\n \"dimgrey\": \"#696969\",\n \"slateblue\": \"#6a5acd\",\n \"olivedrab\": \"#6b8e23\",\n \"slategray\": \"#708090\",\n \"slategrey\": \"#708090\",\n \"lightslategray\": \"#778899\",\n \"lightslategrey\": \"#778899\",\n \"mediumslateblue\": \"#7b68ee\",\n \"lawngreen\": \"#7cfc00\",\n \"aquamarine\": \"#7fffd4\",\n \"chartreuse\": \"#7fff00\",\n \"gray\": \"#808080\",\n \"grey\": \"#808080\",\n \"maroon\": \"#800000\",\n \"olive\": \"#808000\",\n \"purple\": \"#800080\",\n \"lightskyblue\": \"#87cefa\",\n \"skyblue\": \"#87ceeb\",\n \"blueviolet\": \"#8a2be2\",\n \"darkmagenta\": \"#8b008b\",\n \"darkred\": \"#8b0000\",\n \"saddlebrown\": \"#8b4513\",\n \"darkseagreen\": \"#8fbc8f\",\n \"lightgreen\": \"#90ee90\",\n \"mediumpurple\": \"#9370db\",\n \"darkviolet\": \"#9400d3\",\n \"palegreen\": \"#98fb98\",\n \"darkorchid\": \"#9932cc\",\n \"yellowgreen\": \"#9acd32\",\n \"sienna\": \"#a0522d\",\n \"brown\": \"#a52a2a\",\n \"darkgray\": \"#a9a9a9\",\n \"darkgrey\": \"#a9a9a9\",\n \"greenyellow\": \"#adff2f\",\n \"lightblue\": \"#add8e6\",\n \"paleturquoise\": \"#afeeee\",\n \"lightsteelblue\": \"#b0c4de\",\n \"powderblue\": \"#b0e0e6\",\n \"firebrick\": \"#b22222\",\n \"darkgoldenrod\": \"#b8860b\",\n \"mediumorchid\": \"#ba55d3\",\n \"rosybrown\": \"#bc8f8f\",\n \"darkkhaki\": \"#bdb76b\",\n \"silver\": \"#c0c0c0\",\n \"mediumvioletred\": \"#c71585\",\n \"indianred\": \"#cd5c5c\",\n \"peru\": \"#cd853f\",\n \"chocolate\": \"#d2691e\",\n \"tan\": \"#d2b48c\",\n \"lightgray\": \"#d3d3d3\",\n \"lightgrey\": \"#d3d3d3\",\n \"thistle\": \"#d8bfd8\",\n \"goldenrod\": \"#daa520\",\n \"orchid\": \"#da70d6\",\n \"palevioletred\": \"#db7093\",\n \"crimson\": \"#dc143c\",\n \"gainsboro\": \"#dcdcdc\",\n \"plum\": \"#dda0dd\",\n \"burlywood\": \"#deb887\",\n \"lightcyan\": \"#e0ffff\",\n \"lavender\": \"#e6e6fa\",\n \"darksalmon\": \"#e9967a\",\n \"palegoldenrod\": \"#eee8aa\",\n \"violet\": \"#ee82ee\",\n \"azure\": \"#f0ffff\",\n \"honeydew\": \"#f0fff0\",\n \"khaki\": \"#f0e68c\",\n \"lightcoral\": \"#f08080\",\n \"sandybrown\": \"#f4a460\",\n \"beige\": \"#f5f5dc\",\n \"mintcream\": \"#f5fffa\",\n \"wheat\": \"#f5deb3\",\n \"whitesmoke\": \"#f5f5f5\",\n \"ghostwhite\": \"#f8f8ff\",\n \"lightgoldenrodyellow\": \"#fafad2\",\n \"linen\": \"#faf0e6\",\n \"salmon\": \"#fa8072\",\n \"oldlace\": \"#fdf5e6\",\n \"warmwhite\": \"#fdf5e6\",\n \"bisque\": \"#ffe4c4\",\n \"blanchedalmond\": \"#ffebcd\",\n \"coral\": \"#ff7f50\",\n \"cornsilk\": \"#fff8dc\",\n \"darkorange\": \"#ff8c00\",\n \"deeppink\": \"#ff1493\",\n \"floralwhite\": \"#fffaf0\",\n \"fuchsia\": \"#ff00ff\",\n \"gold\": \"#ffd700\",\n \"hotpink\": \"#ff69b4\",\n \"ivory\": \"#fffff0\",\n \"lavenderblush\": \"#fff0f5\",\n \"lemonchiffon\": \"#fffacd\",\n \"lightpink\": \"#ffb6c1\",\n \"lightsalmon\": \"#ffa07a\",\n \"lightyellow\": \"#ffffe0\",\n \"magenta\": \"#ff00ff\",\n \"mistyrose\": \"#ffe4e1\",\n \"moccasin\": \"#ffe4b5\",\n \"navajowhite\": \"#ffdead\",\n \"orange\": \"#ffa500\",\n \"orangered\": \"#ff4500\",\n \"papayawhip\": \"#ffefd5\",\n \"peachpuff\": \"#ffdab9\",\n \"pink\": \"#ffc0cb\",\n \"red\": \"#ff0000\",\n \"seashell\": \"#fff5ee\",\n \"snow\": \"#fffafa\",\n \"tomato\": \"#ff6347\",\n \"white\": \"#ffffff\",\n \"yellow\": \"#ffff00\"\n}\n\nif (msg.payload.toLowerCase() in colors) {\n\tmsg.payload = colors[msg.payload.toLowerCase()];\n\tvar r = parseInt(msg.payload.slice(1,3),16);\n\tvar g = parseInt(msg.payload.slice(3,5),16);\n\tvar b = parseInt(msg.payload.slice(5),16);\n\tmsg2 = { payload:r.toString()+\",\"+ g.toString()+\",\"+ b.toString() };\n\treturn [msg,msg2];\n}\n\nreturn null;","outputs":"2","x":613,"y":609,"z":"c098fa53.5e7928","wires":[[],[]]},{"id":"d7567a7d.28a988","type":"debug","name":"","active":true,"complete":false,"x":733.0001831054688,"y":530.0000305175781,"z":"c098fa53.5e7928","wires":[]},{"id":"b64775a2.49b888","type":"blinkstick","name":"","x":712.0000610351562,"y":472.0000305175781,"z":"c098fa53.5e7928","wires":[]}] |
