2023年6月11日 星期日

Node-Red + SQLite

 Node-Red + SQLite 




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i < msg.payload.length; i++) {  \n   data += '{ \"x\":' + msg.payload[i].thetime + ', \"y\":' + msg.payload[i].thetemp + '}';  \n   if (i < (msg.payload.length - 1)) {  \n     data += \",\"  \n   } else {  \n     data += \"]]\"  \n   }  \n }  \n var jsondata = JSON.parse(data);  \n msg.payload = [{\"series\": series, \"data\": jsondata, \"labels\": labels}];  \n   \n   \n return msg; ","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":500,"y":380,"wires":[["d251faf76f285f5c","56ceb28b1d7350af"]]},{"id":"8f71cf747905f57b","type":"inject","z":"f7dcba167cab72f5","name":"Sqlite Data in a Line Chart","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":150,"y":380,"wires":[["e7b510e90114d162"]]},{"id":"d251faf76f285f5c","type":"ui_chart","z":"f7dcba167cab72f5","name":"","group":"92b4e639.d05558","order":35,"width":0,"height":0,"label":"chart","chartType":"line","legend":"false","xformat":"HH:mm:ss","interpolate":"linear","nodata":"","dot":false,"ymin":"","ymax":"","removeOlder":1,"removeOlderPoints":"","removeOlderUnit":"3600","cutout":0,"useOneColor":false,"useUTC":false,"colors":["#1f77b4","#aec7e8","#ff7f0e","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5"],"outputs":1,"useDifferentColor":false,"className":"","x":690,"y":380,"wires":[[]]},{"id":"56ceb28b1d7350af","type":"debug","z":"f7dcba167cab72f5","name":"debug  ","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":690,"y":420,"wires":[]},{"id":"e7b510e90114d162","type":"sqlite","z":"f7dcba167cab72f5","mydb":"af927aba.0dc108","sqlquery":"fixed","sql":"select * from temps LIMIT 8 OFFSET (SELECT COUNT(*) FROM temps)-8;","name":"select","x":330,"y":380,"wires":[["f2f5cfcd7742e5f4"]]},{"id":"af927aba.0dc108","type":"sqlitedb","db":"C:\\Users\\User\\.node-red\\sensor_0611.db","mode":"RWC"},{"id":"92b4e639.d05558","type":"ui_group","name":"溫度","tab":"a769a2ac.25aff","order":1,"disp":true,"width":"15","collapse":false,"className":""},{"id":"a769a2ac.25aff","type":"ui_tab","name":"Python","icon":"dashboard","order":1,"disabled":false,"hidden":false}]

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