A flexible and easy to configure service to collect and forward readings from smart meters and other sensors. It supports the Volkszaehler middleware and can be used as a replacement of vzlogger.
License: BSD 2-Clause "Simplified" License
Just wanted to leave a word of appreciation! You project significantly simplifies the setup to monitor the house holds power consumption. SML parsing of our Holley DTZ541-ZEBA works out of the box. The integrated metrics endpoint allows prometheus to directly scrape the data. I really appreciate that I don't have to install and setup the volkszaehler stack.
Thanks!
Hello,
getting this error while starting the wizard.
$ sudo pymeterreader-wizard
Detecting meters...
ERROR:pymeterreader.device_lib.serial_reader:Uncaught Exception while tyring to detect SML Meter! Please report this to the developers.
Traceback (most recent call last):
File "/usr/local/bin/pymeterreader-wizard", line 10, in <module>
sys.exit(Wizard())
File "/usr/local/lib/python3.7/dist-packages/pymeterreader/wizard/ncui.py", line 32, in __init__
self.meters = detect()
File "/usr/local/lib/python3.7/dist-packages/pymeterreader/wizard/detector.py", line 14, in detect
devices.extend(SmlReader.detect())
File "/usr/local/lib/python3.7/dist-packages/pymeterreader/device_lib/meter_sml.py", line 82, in detect
return SmlReader("loop://")._detect_serial_devices(**kwargs)
File "/usr/local/lib/python3.7/dist-packages/pymeterreader/device_lib/serial_reader.py", line 90, in _detect_serial_devices
device = serial_reader_implementation._discover()
File "/usr/local/lib/python3.7/dist-packages/pymeterreader/device_lib/meter_sml.py", line 88, in _discover
sample = self.fetch()
File "/usr/local/lib/python3.7/dist-packages/pymeterreader/device_lib/base.py", line 83, in fetch
sample = self._fetch_untracked()
File "/usr/local/lib/python3.7/dist-packages/pymeterreader/device_lib/meter_sml.py", line 50, in _fetch_untracked
serial_port.read_until(expected=self.__START_SEQ)
TypeError: read_until() got an unexpected keyword argument 'expected'
Raspberry Pi 3 Model B Rev 1.2
Raspbian GNU/Linux 10 (buster)
Linux vzlogger 4.19.97-v7+ #1294 SMP Thu Jan 30 13:15:58 GMT 2020 armv7l GNU/Linux
Is it possible to integrate a function to send a initialize sequenz to the meter?
vzlogger has a "mini webserver" which outputs the basic data as JSON. See documentation:
https://wiki.volkszaehler.org/software/controller/vzlogger/vzlogger_conf_parameter#local
The config in /etc/vzlogger.json looks like this:
// Build-in HTTP server
"local": {
"enabled": true, // enable local HTTPd for serving live readings
"port": 8088, // TCP port for local HTTPd
"index": true, // provide index listing of available channels if no UUID was requested
"timeout": 0, // timeout for long polling comet requests in seconds (0 disables comet)
"buffer": 0 // HTTPd buffer configuration for serving readings, default -1
// >0: number of seconds of readings to serve
// <0: number of tuples to server per channel (e.g. -3 will serve 3 tuples)
},
The output looks like this:
{ "version": "0.8.0", "generator": "vzlogger", "data": [ { "uuid": "6836dd20-00d5-11e0-bab1-856ed5f959ae", "last": 1674163666444, "interval": -1, "protocol": "sml", "tuples": [ [ 1674163654443, 14219936.660600001 ] ] }, { "uuid": "6836dd20-00d5-11e0-bab1-856ed5f959af", "last": 1674163666444, "interval": -1, "protocol": "sml", "tuples": [ [ 1674163654443, 15875850.842700001 ] ] }, { "uuid": "6836dd20-00d5-11e0-bab1-856ed5f959ad", "last": 1674163666444, "interval": -1, "protocol": "sml", "tuples": [ [ 1674163654443, 474.74000000000001 ] ] }, { "uuid": "6836dd20-00d5-11e0-bab1-856ed5f959be", "last": 1674163666271, "interval": -1, "protocol": "sml", "tuples": [ [ 1674163654270, 22365376.540800001 ] ] }, { "uuid": "6836dd20-00d5-11e0-bab1-856ed5f959bf", "last": 0, "interval": -1, "protocol": "sml" }, { "uuid": "6836dd20-00d5-11e0-bab1-856ed5f959bd", "last": 1674163666271, "interval": -1, "protocol": "sml", "tuples": [ [ 1674163654270, 2.2250738585072014e-308 ] ] } ] }
In this case I have 6 UUIDs with values. Values starting with 1674 are unix timestamps in milliseconds.
It would be awesome to also have this JSON output in pymeterreader, then I could replace the existing vzlogger, and additionally have data for Prometheus/Grafana (which I currently don't have, because vzlogger does not output data in OpenMetrics format 😄).
For vzlogger integration in EVCC it would be nice if the JSON is outputted when calling the URL "/", and the OpenMetrics data should be outputted when calling "/metrics", which is the de-facto standard for OpenMetrics, see:
https://github.com/OpenObservability/OpenMetrics/blob/main/specification/OpenMetrics.md
This endpoint SHOULD be called "/metrics"
It would be really great to see the JSON output, then it's a true replacement for vzlogger! 👍
Traceback (most recent call last):
File "/usr/local/bin/pymeterreader-wizard", line 5, in <module>
from pymeterreader.wizard.ncui import Wizard
File "/usr/local/lib/python3.9/dist-packages/pymeterreader/wizard/ncui.py", line 12, in <module>
from cursesmenu import CursesMenu
File "/usr/local/lib/python3.9/dist-packages/cursesmenu/__init__.py", line 1, in <module>
from . import items
File "/usr/local/lib/python3.9/dist-packages/cursesmenu/items/__init__.py", line 2, in <module>
from .exit_item import ExitItem
File "/usr/local/lib/python3.9/dist-packages/cursesmenu/items/exit_item.py", line 5, in <module>
from cursesmenu.curses_menu import CursesMenu
File "/usr/local/lib/python3.9/dist-packages/cursesmenu/curses_menu.py", line 12, in <module>
from deprecated import deprecated
ModuleNotFoundError: No module named 'deprecated'
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