Dokumentation für NocoDB-Setup und n8n-Workflows hinzugefügt
- NocoDB-Tabellenstruktur mit allen erforderlichen Spalten dokumentiert - n8n-Workflow für automatische Datensammlung (alle 15 Min.) hinzugefügt - n8n-Webhook für Datenbereitstellung an Visualisierung hinzugefügt - CSV-Beispieldatei als Strukturvorlage hinzugefügt 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
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1763107744883.csv
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1763107744883.csv
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68
README.md
68
README.md
@@ -83,6 +83,74 @@ Oder als Objekt mit Daten-Array:
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- `Zeitstempel`
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- `created_at`
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## NocoDB-Setup
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Für die automatische Datenerfassung und -speicherung muss eine NocoDB-Datenbank mit folgender Tabellenstruktur eingerichtet werden:
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### Erforderliche Tabellenspalten
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| Spaltenname | Typ | Beschreibung |
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|-------------|-----|--------------|
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| `Title` | Text | Optionaler Titel (kann leer bleiben) |
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| `SDS_P1` | Number | Feinstaub PM10-Wert |
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| `SDS_P2` | Number | Feinstaub PM2.5-Wert |
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| `BME280_Temperature` | Number | Temperatur in °C |
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| `BME280_Humidity` | Number | Luftfeuchtigkeit in % |
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| `BME280_Pressure` | Number | Luftdruck (optional) |
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| `Datum` | Date/Text | Datum im Format TT/MM/YYYY |
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| `Uhrzeit` | Time/Text | Uhrzeit im Format HH:MM:SS |
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**Hinweis**: Die genaue Struktur ist in der CSV-Datei `1763107744883.csv` zu finden, die als Vorlage dienen kann.
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## n8n Workflows
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Das Projekt enthält zwei n8n-Workflows für die Automatisierung:
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### 1. Datensammlung (`feinstaub-daten.json`)
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**Zweck**: Automatisches Sammeln von Sensordaten und Speichern in NocoDB
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**Workflow-Schritte**:
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1. **Schedule Trigger**: Läuft alle 15 Minuten automatisch
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2. **HTTP Request**: Ruft Daten von `https://feinstaub.homeabc.de/data.json` ab
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3. **NocoDB Create**: Schreibt die Sensordaten in die NocoDB-Tabelle
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**Import in n8n**:
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```bash
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# Workflow in n8n importieren
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# Settings → Import from File → feinstaub-daten.json auswählen
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```
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**Konfiguration**:
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- NocoDB API-Token einrichten
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- Project-ID und Table-ID anpassen
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- Sensor-URL bei Bedarf ändern
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### 2. Daten-Webhook (`feinstaub-webhook.json`)
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**Zweck**: API-Endpunkt für die Visualisierung
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**Workflow-Schritte**:
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1. **Webhook**: Empfängt Anfragen auf `/sds-data`
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2. **NocoDB GetAll**: Liest alle Daten aus der Tabelle (SDS_P1, SDS_P2, Uhrzeit)
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3. **JavaScript Code**: Filtert die letzten 50 Einträge
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4. **Response**: Gibt JSON-Daten zurück
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**Verwendung**:
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```javascript
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// In feinstaub.html die API-URL anpassen:
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const webhookUrl = 'https://your-n8n-instance.com/webhook/sds-data';
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```
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## CSV-Export
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Die Datei `1763107744883.csv` enthält exportierte Sensordaten im CSV-Format und dient als:
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- Beispieldatei für die erwartete Datenstruktur
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- Vorlage für NocoDB-Tabellendefinition
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- Backup der Sensordaten
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**CSV-Struktur**: Siehe NocoDB-Setup oben
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## Ausreißer-Filterung
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Die Anwendung verwendet eine statistische Methode zur automatischen Erkennung von Ausreißern:
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169
feinstaub-daten.json
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feinstaub-daten.json
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{
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"name": "Feinstaub Sensor",
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"nodes": [
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{
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"parameters": {},
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"type": "n8n-nodes-base.manualTrigger",
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"typeVersion": 1,
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"position": [
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0,
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0
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],
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"id": "97a097ea-86dd-4cc1-9fe8-0b93c165fdb4",
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"name": "When clicking ‘Execute workflow’"
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},
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{
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"parameters": {
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"url": "https://feinstaub.homeabc.de/data.json",
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"options": {}
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},
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"type": "n8n-nodes-base.httpRequest",
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"typeVersion": 4.2,
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"position": [
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192,
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96
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],
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"id": "3661b690-3859-4d85-84c9-5fb1d80fede2",
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"name": "HTTP Request"
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},
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{
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"parameters": {
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"authentication": "nocoDbApiToken",
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"operation": "create",
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"projectId": "pdxl4cx4dbu9nxi",
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"table": "mq93uflujstkrdh",
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"fieldsUi": {
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"fieldValues": [
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{
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"fieldName": "=SDS_P1",
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"fieldValue": "={{ $json.sensordatavalues[0].value }}"
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},
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{
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"fieldName": "SDS_P2",
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"fieldValue": "={{ $json.sensordatavalues[1].value }}"
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},
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{
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"fieldName": "BME280_Temperature",
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"fieldValue": "={{ $json.sensordatavalues[2].value }}"
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},
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{
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"fieldName": "BME280_Humidity",
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"fieldValue": "={{ $json.sensordatavalues[4].value }}"
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},
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{
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"fieldName": "Datum",
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"fieldValue": "={{ $now.toLocaleString('de-DE', { timeZone: 'Europe/Berlin' }) }}"
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},
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{
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"fieldName": "Uhrzeit",
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"fieldValue": "={{ $now.toFormat('HH:mm:ss') }}"
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}
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]
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}
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},
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"type": "n8n-nodes-base.nocoDb",
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"typeVersion": 3,
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"position": [
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384,
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96
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],
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"id": "1bfeba86-aca1-4b75-b2cb-5712645e0981",
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"name": "Create a row",
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"credentials": {
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"nocoDbApiToken": {
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"id": "T9XuGr6CJD2W2BPO",
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"name": "NocoDB Token account"
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}
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}
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},
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{
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"parameters": {
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"rule": {
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"interval": [
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{
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"field": "minutes",
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"minutesInterval": 15
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}
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]
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}
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},
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"type": "n8n-nodes-base.scheduleTrigger",
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"typeVersion": 1.2,
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"position": [
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0,
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192
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],
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"id": "b9749aa9-4472-4b8c-b7ce-2ad59d979d6c",
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"name": "Schedule Trigger"
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}
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],
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"pinData": {},
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"connections": {
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"When clicking ‘Execute workflow’": {
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"main": [
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[
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{
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"node": "HTTP Request",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"HTTP Request": {
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"main": [
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[
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{
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"node": "Create a row",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Schedule Trigger": {
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"main": [
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[
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{
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"node": "HTTP Request",
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"type": "main",
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"index": 0
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}
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]
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]
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}
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},
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"active": true,
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"settings": {
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"executionOrder": "v1",
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"callerPolicy": "workflowsFromSameOwner",
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"availableInMCP": false,
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"errorWorkflow": "0bBZzSE6SUzVsif5"
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},
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"versionId": "fd1b3549-6bad-48eb-9b7c-e7554966ad01",
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"meta": {
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"templateCredsSetupCompleted": true,
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"instanceId": "2f7fd37175cefa82de44e06b8af9ab9c01e7956018045d6efc4f7bf1588a41eb"
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},
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"id": "1P67HarmPSvmjDxc",
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"tags": [
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{
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"updatedAt": "2025-11-01T14:23:20.263Z",
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"createdAt": "2025-11-01T14:23:20.263Z",
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"id": "N0uCqYBwuniqV9Up",
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"name": "feinstaub"
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},
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{
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"updatedAt": "2025-11-01T14:23:20.250Z",
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"createdAt": "2025-11-01T14:23:20.250Z",
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"id": "WqB4PpiYqVO3BD4U",
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"name": "smarthome"
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},
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{
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"updatedAt": "2025-11-01T14:23:20.273Z",
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"createdAt": "2025-11-01T14:23:20.273Z",
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"id": "k6O9Q9n2ZJ8bPx17",
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"name": "sensor"
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}
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]
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}
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159
feinstaub-webhook.json
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159
feinstaub-webhook.json
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{
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"name": "NocoDB Webhook für Grafiken",
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"nodes": [
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{
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"parameters": {},
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"type": "n8n-nodes-base.manualTrigger",
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"typeVersion": 1,
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"position": [
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16,
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224
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],
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"id": "cde82cdb-6c25-49bc-a09f-a74fec973575",
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"name": "When clicking ‘Execute workflow’"
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},
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{
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"parameters": {
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"authentication": "nocoDbApiToken",
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"operation": "getAll",
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"projectId": "pdxl4cx4dbu9nxi",
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"table": "mq93uflujstkrdh",
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"returnAll": true,
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"options": {
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"fields": [
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"SDS_P1",
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"SDS_P2",
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"Uhrzeit"
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]
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}
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},
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"type": "n8n-nodes-base.nocoDb",
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"typeVersion": 3,
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"position": [
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208,
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112
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],
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"id": "4e1510cc-1843-43d4-bdda-3ff32ccc4aea",
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"name": "Get many rows",
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"credentials": {
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"nocoDbApiToken": {
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"id": "T9XuGr6CJD2W2BPO",
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"name": "NocoDB Token account"
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}
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}
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},
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{
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"parameters": {
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"path": "sds-data",
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"responseMode": "lastNode",
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"responseData": "allEntries",
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"options": {}
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},
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"type": "n8n-nodes-base.webhook",
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"typeVersion": 2.1,
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"position": [
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0,
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0
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],
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"id": "2c42cea9-afaa-4d93-8a3b-9ea8d11dda88",
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"name": "Webhook",
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"webhookId": "7f744ddd-79a1-4bb0-987a-3a7beef09f13"
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},
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{
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"parameters": {
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"jsCode": "// nur die letzten 50 behalten\nreturn items.slice(-50);\n"
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},
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"type": "n8n-nodes-base.code",
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"typeVersion": 2,
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"position": [
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400,
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112
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],
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"id": "238b6d39-7ade-4146-9fd9-64521cd32b4f",
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"name": "Code in JavaScript"
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},
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{
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"parameters": {
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"height": 480,
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"width": 784
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},
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"type": "n8n-nodes-base.stickyNote",
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"position": [
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-144,
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-80
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],
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"typeVersion": 1,
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"id": "7490e26e-5661-4e77-a6d4-4084f77d1921",
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"name": "Sticky Note"
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}
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],
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"pinData": {},
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"connections": {
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"When clicking ‘Execute workflow’": {
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"main": [
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[
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{
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"node": "Get many rows",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Webhook": {
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"main": [
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[
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{
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"node": "Get many rows",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Get many rows": {
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"main": [
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[
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{
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"node": "Code in JavaScript",
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"type": "main",
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"index": 0
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}
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]
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]
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}
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},
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"active": true,
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"settings": {
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"executionOrder": "v1",
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"callerPolicy": "workflowsFromSameOwner",
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"availableInMCP": false,
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"errorWorkflow": "0bBZzSE6SUzVsif5"
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},
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"versionId": "9ece3377-504a-4df7-900d-ef23c1bd5905",
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"meta": {
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"templateCredsSetupCompleted": true,
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"instanceId": "2f7fd37175cefa82de44e06b8af9ab9c01e7956018045d6efc4f7bf1588a41eb"
|
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},
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"id": "71Oy271yDtaElXuQ",
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"tags": [
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{
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"updatedAt": "2025-11-01T14:27:07.596Z",
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"createdAt": "2025-11-01T14:27:07.596Z",
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"id": "8ktLneL4GgVFyanL",
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"name": "webhook"
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},
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{
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"updatedAt": "2025-11-01T14:23:20.263Z",
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"createdAt": "2025-11-01T14:23:20.263Z",
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"id": "N0uCqYBwuniqV9Up",
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"name": "feinstaub"
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},
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{
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"updatedAt": "2025-11-01T14:27:03.941Z",
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"createdAt": "2025-11-01T14:27:03.941Z",
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"id": "ZXuz8AjF5AIBPY4Z",
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"name": "nocodb"
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}
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]
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}
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Reference in New Issue
Block a user