andig

module bmw

go 1.25.1

require (
	github.com/eclipse/paho.mqtt.golang v1.5.0
	github.com/evcc-io/evcc v0.0.0-20250918141728-7759622260dc
	github.com/joho/godotenv v1.5.1
	golang.org/x/oauth2 v0.31.0
)

andig

	if fi, _ := os.Stdin.Stat(); fi.Mode()&os.ModeNamedPipe != 0 || fi.Mode()&os.ModeCharDevice == 0 {
		data, err := io.ReadAll(os.Stdin)
		if err != nil {
			log.Fatal(err)
		}
		...
	}

andig

package fly

import (
	"net/http"
	"os"
	"time"
)

const (
	flyMachineId = "fly-machine-id"

andig

package main

import (
	"context"
	"fmt"
	"log"
	"net"
	"net/http"
	"net/url"
	"time"

andig

// hexDump
func hexDump(file io.Reader) {
	dumpLimit := &io.LimitedReader{
		R: file,
		N: 512,
	}

	b, _ := ioutil.ReadAll(dumpLimit)

andig

Volkszähler Architecture

Current architecture

The as-is architecture looks like this:

aquire -> persist -> visualize

Each compontent is implemented separately with persist and visualize sharing a github repository.

andig

<?php

/*
 * PHP-only solution for obtaining external IP from Fritz!Box
 *
 * Based on https://stackoverflow.com/questions/5647461/how-do-i-send-a-post-request-with-php#6609181
 * brought to you by [email protected]
 */

// curl -s "http://fritz.box:49000/igdupnp/control/WANIPConn1" -H "Content-Type: text/xml; charset="utf-8"" -H "SoapAction:urn:schemas-upnp-org:service:WANIPConnection:1#GetExternalIPAddress" -d "@external_ip.xml" | grep -Eo "\<[[:digit:]]{1,3}(\.[[:digit:]]{1,3}){3}\>"

andig

Installing elastic beats on Raspberry Pi

At time of writing elastic.co does not provide ARM builds for raspberry. This tutorial describes how to compile e.g. filebeat and run in on Raspberry Pi3.

Prerequisites

You'll need Go (>1.8) and Pyhton with virtualenv.

Go 1.8