✨ Updates! InfluxDB and .env support

.env.example

@@ -0,0 +1,7 @@
+INFLUXDB_TOKEN=""
+INFLUXDB_ORG=""
+INFLUXDB_URL="http://localhost:8080"
+INFLUXDB_BUCKET="electricity"
+INFLUXDB_ENABLED=True
+FLASK_APP_URL="http://localhost/impulses"
+FLASK_APP_ENABLED=True

.gitignore

@@ -69,3 +69,4 @@ pip-selfcheck.json
 
 # custom
 tags
+.env

README.md

@@ -1,18 +1,39 @@
 # powermeter
 
-Simple Flask based application to receive impulses via cURL from a power meter.
+
+A simple Pyhton script to mesaure you electricity consumption using the LED on a electricity meter and a digital light sensor.
+
+You either can use InfluxDB to store the data or a built in Flask application.
+
+## Hardware setup
+
+- Raspberry Pi
+- Digital light sensor like this: https://www.berrybase.de/lichtsensor-mit-digitalem-ausgang
+
+Connect the light sensor to your Pi:
+
+```
+VCC: 5V
+DATA: GPIO 27
+GND: GND
+```
+
+## Software setup
+
+- Copy the `.env.example` to `.env` and change it to your needs.
+- Acivate at least InfluxDB (which I would recommend) or Flask output.
 
 Clone this repository and create a virtualenv within it:
 
 ```
-git clone https://github.com/Finn10111/powermeter.git
+git clone https://code.f2n.me/finn/powermeter.git
 cd powermeter
-virtualenv -p /usr/bin/python3 .
-# or if python3 is your default:
 virtualenv .
 pip install -r requirements.txt
 ```
 
+## Developing (Flask app)
+
 For developing run this (you need to create database and user first):
 
 ```
@@ -20,3 +41,18 @@ export FLASK_ENV=development
 export APP_DEVELOPMENT_DATABASE_URI=postgres://username:passwort@hostname/database
 flask run
 ```
+
+## Screenshots
+
+Node-RED usage example:
+
+![Node-RED Dashboard](/screenshots/nodered.png)
+
+Grafana Dashboard example (InfluxDB datasource):
+
+![Grafana Dashboard](/screenshots/grafana.png)
+
+
+
+
+

powermeter.py

@@ -4,20 +4,54 @@ import time
 import datetime
 import requests
 
-SENSOR_PIN = 27
+import influxdb_client, os
+from influxdb_client import InfluxDBClient, Point, WritePrecision
+from influxdb_client.client.write_api import SYNCHRONOUS
 
+
+if os.getenv("FLASK_APP_ENABLED", False).lower() == "true":
+    flask_app_enabled = True
+    flask_app_url = os.getenv("FLASK_APP_URL")
+if os.getenv("INFLUXDB_ENABLED", False).lower() == "true":
+    influxdb_enabled = True
+    token = os.environ.get("INFLUXDB_TOKEN")
+    org = os.environ.get("INFLUXDB_ORG")
+    url = os.environ.get("INFLUXDB_URL")
+    bucket = os.environ.get("INFLUXDB_BUCKET")
+    client = influxdb_client.InfluxDBClient(url=url, token=token, org=org)
+    write_api = client.write_api(write_options=SYNCHRONOUS)
+
+SENSOR_PIN = 27
 GPIO.setmode(GPIO.BCM)
 GPIO.setup(SENSOR_PIN, GPIO.IN)
 
 seconds = 0
 
+
 def callback(channel):
     print(str(datetime.datetime.now()) + ' Impulse detected')
-    url = 'http://powermeter.local/impulses'
-    requests.post(url, json = {'power': 2})
+    if flask_app_enabled:
+        flaskapp()
+    if influxdb_enabled:
+        influxdb()
+
+
+def flaskapp():
+    requests.post(flask_app_url, json={'power': 2})
+
+
+def influxdb():
+    point = (
+        Point("electricity")
+        .field("consumption", 2)
+    )
+    write_api.write(bucket=bucket, org="finn", record=point)
+
+
+influxdb()
 
 try:
-    GPIO.add_event_detect(SENSOR_PIN , GPIO.RISING, callback=callback, bouncetime=500)
+    GPIO.add_event_detect(SENSOR_PIN, GPIO.RISING, callback=callback, bouncetime=500)
     while True:
         time.sleep(1)
 except KeyboardInterrupt: