Create a node to generate(or simulate) typical IoT data (Number, String) for a testing purpose. Originally consider Subflow but decide to create a new one instead (NOTE : a subflow cannot contain an instance of itself). Basic design idea (Add/Remove parameters) was from ui_form from node-red-dashboard.
- Example flow
[{"id":"cb83517b.a5e1e","type":"debug","z":"d70af7bd.4d2698","name":"Display msg.payload","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":640.3001174926758,"y":112.3333854675293,"wires":[]},{"id":"3be047fd.f44378","type":"inject","z":"d70af7bd.4d2698","name":"msg.payload Trigger","topic":"","payload":"","payloadType":"date","repeat":"2","crontab":"","once":false,"onceDelay":0.1,"x":142.3000030517578,"y":163.53335762023926,"wires":[["deecd2bb.11469"]]},{"id":"deecd2bb.11469","type":"iot-simulator","z":"d70af7bd.4d2698","name":"","options":[{"label":"Temperature","value":"30","range":"10"},{"label":"Air_Quality","value":"40","range":"10"},{"label":"UV_Index","value":"6","range":"5"}],"preOptions":[{"label":"Temperature","value":"30","range":"10"},{"label":"Air_Quality","value":"40","range":"10"}],"timestamp":true,"allinone":false,"optionEdited":true,"x":361.30010986328125,"y":165.40005779266357,"wires":[["cb83517b.a5e1e","c077ade6.ec0a"]]},{"id":"c077ade6.ec0a","type":"function","z":"d70af7bd.4d2698","name":"Payload Split","func":"var msg1 = null\nif ( msg.payload[\"Temperature\"] !== undefined) {\n msg1 = {};\n msg1.payload = msg.payload[\"Temperature\"];\n}\n\nvar msg2 = null\nif ( msg.payload[\"Air_Quality\"] !== undefined){\n msg2 = {};\n msg2.payload = msg.payload[\"Air_Quality\"];\n}\n\nvar msg3 = null\nif ( msg.payload[\"UV_Index\"] !== undefined){\n msg3 = {};\n msg3.payload = msg.payload[\"UV_Index\"];\n}\nreturn [msg1, msg2, msg3];","outputs":3,"noerr":0,"x":524.3000946044922,"y":216.60003185272217,"wires":[["18af797e.554067"],["661f5e00.71c9b4"],["9e42205.31f5ae"]]},{"id":"18af797e.554067","type":"ui_gauge","z":"d70af7bd.4d2698","name":"Temperature","group":"5b9e6fe9.d44e3","order":0,"width":"4","height":"4","gtype":"gage","title":"Temperature","label":"°C","format":"{{value}} °C","min":0,"max":"100","colors":["#00b500","#e6e600","#ca3838"],"seg1":"","seg2":"","x":689.3003082275391,"y":169.40005111694336,"wires":[]},{"id":"661f5e00.71c9b4","type":"ui_chart","z":"d70af7bd.4d2698","name":"Air Quality","group":"5b9e6fe9.d44e3","order":1,"width":"4","height":"4","label":"Air Quality","chartType":"line","legend":"false","xformat":"HH:mm:ss","interpolate":"linear","nodata":"","dot":true,"ymin":"","ymax":"","removeOlder":1,"removeOlderPoints":"","removeOlderUnit":"3600","cutout":0,"useOneColor":false,"colors":["#1f77b4","#aec7e8","#ff7f0e","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5"],"useOldStyle":false,"x":686.3002815246582,"y":226.40008354187012,"wires":[[],[]]},{"id":"9e42205.31f5ae","type":"ui_gauge","z":"d70af7bd.4d2698","name":"","group":"5b9e6fe9.d44e3","order":2,"width":"4","height":"4","gtype":"gage","title":"UV Index","label":"units","format":"{{value}}","min":"1","max":"12","colors":["#00b500","#e6e600","#ca3838"],"seg1":"6","seg2":"9","x":677.5234375,"y":290.9609375,"wires":[]},{"id":"5b9e6fe9.d44e3","type":"ui_group","z":"","name":"SensorData","tab":"a1882c32.fc82a","order":2,"disp":true,"width":"12","collapse":false},{"id":"a1882c32.fc82a","type":"ui_tab","z":"","name":"Dashboard","icon":"dashboard","order":1}]
IoT Simulator + flespi MQTT Broker
- Install
mqtt-plus(MQTT over websocket),
git clone https://github.com/btsimonh/node-red-contrib-mqtt-plus
cd ~/.node-red
npm install <download>/node-red-contrib-mqtt-plus
- Publisher Topic
ny-10001/sensor1from Node-RED MQTT output node - Subscriber Topic
ny-10001/#(use#multi-level wildcard or+single-level wildcard) from flespi MQTT Broker Panel
- Connection settings from flespi MQTT Broker Panel
mqtt-plus output nodesettings
- Example Flow
[{"id":"ae3f3c79.714aa","type":"mqtt-plus out","z":"e50a92ea.32995","name":"ny-10001/sensor1","topic":"ny-10001/sensor1","qos":"0","retain":"false","broker":"96a856bd.de7e58","x":618.5277633666992,"y":190.10081672668457,"wires":[[]]},{"id":"3af71431.d6c14c","type":"debug","z":"e50a92ea.32995","name":"Display msg.payload","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":617.0003128051758,"y":137.23267078399658,"wires":[]},{"id":"cb52829d.35ff8","type":"inject","z":"e50a92ea.32995","name":"Sensor Trigger","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":116.99998474121094,"y":126.4326286315918,"wires":[["e250d828.081bf8"]]},{"id":"e250d828.081bf8","type":"iot-simulator","z":"e50a92ea.32995","name":"","options":[{"label":"Temperature","value":"30","range":"10"},{"label":"Air_Quality","value":"40","range":"10"},{"label":"UV_Index","value":"6","range":"5"}],"preOptions":[{"label":"Temperature","value":"30","range":"10"},{"label":"Air_Quality","value":"40","range":"10"}],"timestamp":true,"allinone":false,"optionEdited":true,"x":253.00016021728516,"y":196.29932689666748,"wires":[["3af71431.d6c14c","77734abd.6a9624","ae3f3c79.714aa"]]},{"id":"77734abd.6a9624","type":"function","z":"e50a92ea.32995","name":"Payload Split","func":"var msg1 = null\nif ( msg.payload[\"Temperature\"] !== undefined) {\n msg1 = {};\n msg1.payload = msg.payload[\"Temperature\"];\n}\n\nvar msg2 = null\nif ( msg.payload[\"Air_Quality\"] !== undefined){\n msg2 = {};\n msg2.payload = msg.payload[\"Air_Quality\"];\n}\n\nvar msg3 = null\nif ( msg.payload[\"UV_Index\"] !== undefined){\n msg3 = {};\n msg3.payload = msg.payload[\"UV_Index\"];\n}\nreturn [msg1, msg2, msg3];","outputs":3,"noerr":0,"x":419.0001678466797,"y":285.499303817749,"wires":[["b857865b.306508"],["37c557f2.8c33f8"],["53db1709.8c19e8"]]},{"id":"b857865b.306508","type":"ui_gauge","z":"e50a92ea.32995","name":"Temperature","group":"9d5aa45e.88a958","order":0,"width":"4","height":"4","gtype":"gage","title":"Temperature","label":"°C","format":"{{value}} °C","min":0,"max":"100","colors":["#00b500","#e6e600","#ca3838"],"seg1":"","seg2":"","x":608.000301361084,"y":244.29933738708496,"wires":[]},{"id":"37c557f2.8c33f8","type":"ui_chart","z":"e50a92ea.32995","name":"Air Quality","group":"9d5aa45e.88a958","order":1,"width":"4","height":"4","label":"Air Quality","chartType":"line","legend":"false","xformat":"HH:mm:ss","interpolate":"linear","nodata":"","dot":true,"ymin":"","ymax":"","removeOlder":1,"removeOlderPoints":"","removeOlderUnit":"3600","cutout":0,"useOneColor":false,"colors":["#1f77b4","#aec7e8","#ff7f0e","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5"],"useOldStyle":false,"x":607.0003242492676,"y":286.2993412017822,"wires":[[],[]]},{"id":"53db1709.8c19e8","type":"ui_gauge","z":"e50a92ea.32995","name":"","group":"9d5aa45e.88a958","order":2,"width":"4","height":"4","gtype":"gage","title":"UV Index","label":"units","format":"{{value}}","min":"1","max":"12","colors":["#00b500","#e6e600","#ca3838"],"seg1":"6","seg2":"9","x":608.2234535217285,"y":327.86019706726074,"wires":[]},{"id":"96a856bd.de7e58","type":"mqtt-plus-broker","z":"","name":"","broker":"wss://mqtt.flespi.io","port":"1883","tls":"dfa32979.425a18","clientid":"mqtt-board-panel-????????","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"willTopic":"","willQos":"0","willPayload":"","birthTopic":"","birthQos":"0","birthPayload":""},{"id":"9d5aa45e.88a958","type":"ui_group","z":"","name":"SensorData","tab":"bf257d4d.65bd2","order":2,"disp":true,"width":"12","collapse":false},{"id":"dfa32979.425a18","type":"tls-config","z":"","name":"","cert":"","key":"","ca":"/Users/phyunsj/Documents/root-ca.crt","certname":"","keyname":"","caname":"root-ca.crt","verifyservercert":true},{"id":"bf257d4d.65bd2","type":"ui_tab","z":"","name":"Dashboard","icon":"dashboard","order":1}]
