NEWS
Daten von thingspeak.com auslesen und in VIS darstellen
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Hallo Zusammen,
ich habe folgenden Use-Case, für den ich als Nicht-Programmier-Spezialist eine Lösung suche:
Ich fange mit einem Flyboard das Signal eines Funkthermometers ab und schicke es per WLAN an die Seite von thingspeak.com. Mit den dort vorhandenen Mitteln kann ich es von überall aus dem Internet auslesen. Allerdings möchte ich eine bessere Integration in VIS haben. Der einfache weg, dass ich auf thingspeak.com vorhandene Displays in einen Frame einbinde funktioniert. Aber trotzdem bleibe ich auf diese Layouts/Icons limitiert.
Ich würde z.B. gerne rgraph in VIS verwenden - aber dazu muss ich die Daten irgendwie in ein Objekt bekommen, dass ich verwenden kann.
Ich hoffe, ich habe mich einigermaßen verständlich ausgedrückt und bin für den Anfang auch in dieser Gruppe nicht falsch. Zumindest habe ich bei der Suche nichts hilfreiches gefunden.
Danke schon mal
Markus
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Hallo smokey,
theoretisch kann man jede Seite parsen. In diesem Fall ist es aber gleich viel einfacher, da für die öffentlichen channels auch ein JSON Feed zur Verfügung steht:
Sieht dann so aus:! ````
{"channel":{"id":44345,"name":"ESP8266 DHT11 Module","description":"ESP8266 DHT11 Module","latitude":"1.386593","longitude":"103.895565","field1":"Temperature(°C)","field2":"Humidity(%)","created_at":"2015-06-28T01:17:29Z","updated_at":"2016-07-21T09:29:33Z","elevation":"5","last_entry_id":1743323},"feeds":[{"created_at":"2016-07-21T09:01:24Z","entry_id":1743224,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:01:41Z","entry_id":1743225,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:01:58Z","entry_id":1743226,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:02:15Z","entry_id":1743227,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:02:32Z","entry_id":1743228,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:02:49Z","entry_id":1743229,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:03:06Z","entry_id":1743230,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:03:23Z","entry_id":1743231,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:03:40Z","entry_id":1743232,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:03:57Z","entry_id":1743233,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:04:14Z","entry_id":1743234,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:04:31Z","entry_id":1743235,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:04:48Z","entry_id":1743236,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:05:05Z","entry_id":1743237,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:05:23Z","entry_id":1743238,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:05:40Z","entry_id":1743239,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:05:57Z","entry_id":1743240,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:06:14Z","entry_id":1743241,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:06:31Z","entry_id":1743242,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:06:48Z","entry_id":1743243,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:07:05Z","entry_id":1743244,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:07:22Z","entry_id":1743245,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:07:40Z","entry_id":1743246,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:07:56Z","entry_id":1743247,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:08:14Z","entry_id":1743248,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:08:31Z","entry_id":1743249,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:08:48Z","entry_id":1743250,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:09:05Z","entry_id":1743251,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:09:22Z","entry_id":1743252,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:09:38Z","entry_id":1743253,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:09:56Z","entry_id":1743254,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:10:13Z","entry_id":1743255,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:10:30Z","entry_id":1743256,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:10:47Z","entry_id":1743257,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:11:04Z","entry_id":1743258,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:11:21Z","entry_id":1743259,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:11:38Z","entry_id":1743260,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:11:55Z","entry_id":1743261,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:12:12Z","entry_id":1743262,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:12:29Z","entry_id":1743263,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:12:46Z","entry_id":1743264,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:13:03Z","entry_id":1743265,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:13:20Z","entry_id":1743266,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:13:37Z","entry_id":1743267,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:13:54Z","entry_id":1743268,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:14:11Z","entry_id":1743269,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:14:28Z","entry_id":1743270,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:14:45Z","entry_id":1743271,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:15:02Z","entry_id":1743272,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:15:19Z","entry_id":1743273,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:15:36Z","entry_id":1743274,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:15:54Z","entry_id":1743275,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:16:11Z","entry_id":1743276,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:16:28Z","entry_id":1743277,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:16:45Z","entry_id":1743278,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:17:02Z","entry_id":1743279,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:17:19Z","entry_id":1743280,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:17:36Z","entry_id":1743281,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:17:53Z","entry_id":1743282,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:18:10Z","entry_id":1743283,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:18:27Z","entry_id":1743284,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:18:44Z","entry_id":1743285,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:19:01Z","entry_id":1743286,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:19:18Z","entry_id":1743287,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:19:35Z","entry_id":1743288,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:19:53Z","entry_id":1743289,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:20:10Z","entry_id":1743290,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:20:27Z","entry_id":1743291,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:20:43Z","entry_id":1743292,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:21:01Z","entry_id":1743293,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:21:18Z","entry_id":1743294,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:21:35Z","entry_id":1743295,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:21:52Z","entry_id":1743296,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:22:09Z","entry_id":1743297,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:22:26Z","entry_id":1743298,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:22:44Z","entry_id":1743299,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:23:00Z","entry_id":1743300,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:23:18Z","entry_id":1743301,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:23:35Z","entry_id":1743302,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:23:52Z","entry_id":1743303,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:24:09Z","entry_id":1743304,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:24:26Z","entry_id":1743305,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:24:43Z","entry_id":1743306,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:25:00Z","entry_id":1743307,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:25:17Z","entry_id":1743308,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:25:34Z","entry_id":1743309,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:25:51Z","entry_id":1743310,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:26:08Z","entry_id":1743311,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:26:25Z","entry_id":1743312,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:26:42Z","entry_id":1743313,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:26:59Z","entry_id":1743314,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:27:16Z","entry_id":1743315,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:27:33Z","entry_id":1743316,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:27:50Z","entry_id":1743317,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:28:07Z","entry_id":1743318,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:28:24Z","entry_id":1743319,"field1":"26.00","field2":"36.00\r\n\r\n"},{"created_at":"2016-07-21T09:28:41Z","entry_id":1743320,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:28:59Z","entry_id":1743321,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:29:16Z","entry_id":1743322,"field1":"27.00","field2":"35.00\r\n\r\n"},{"created_at":"2016-07-21T09:29:33Z","entry_id":1743323,"field1":"26.00","field2":"36.00\r\n\r\n"}]}Nötig ist natürlich die URL (sorry, heißt ja __der__ URL) zu deinem Feed. Und dein Channel sollte öffentlich sein, sonst wird das echt kompliziert mit der Anmeldung per Skript auf thingspeak.com. Gruß Pix -
Hallo Pix,
Danke! Das hatte ich auch gefunden. Aber genau was Du schreibst ist das Problem: nur auf den privaten Seiten kann man die Anzeigen nicht von woanders aus verwenden. Was mich jetzt gerade wundert: Deine Analog-Anzeige unten auf thingspeak hast Du ja offensichtlich im public Bereich. Bin ich blind oder wie hast Du die dorthin gebracht? Ich hab nur Liniencharts.
Smokey
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Hab einfach thingspeak.com aufgerufen und unter den Channels einen ausgesucht. Dort war alles offen. Zum Beispiel hier: https://thingspeak.com/channels/34247
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