bjoern-r / BatteryVoltageGuard.ino

Created April 14, 2020 18:52

Simple Arduino sketch to control a relais to switch a relais if the voltage read from the adc is below a certain level

	/*
	Battery Guard
	Use an arduino nano and connect the input voltage with an voltage divider to A0
	I used 9kOhm and 1kOhm to get a /10 divider to be able to measure up to 50V
	Switch points are for a 12v AGM battery.
	The relais is controlled via D7.
	*/
	#define NUM_READINGS 10
	#define RELAIS_PIN 7
	#define ADC_REF 5.0

bjoern-r / codimd-oauth2.md

Last active November 2, 2019 18:14

CodiMD docker with Oauth2 via

CodeiMD authentication via Oauth2 with django-oidc-provider

install django-oidc-provider

create application in django-oidc-provider

Configure allowed callback urls:

https://pad.server.com/auth/oauth2/callback
http://pad.server.com/auth/oauth2/callback

Configure scopes:

bjoern-r / busybox-static-chroot.md

Last active April 9, 2019 06:30

busybox static chroot

create user

usermod -G chrootlogin joe

add to sshd_config

change file /etc/ssh/sshd_config

Subsystem sftp internal-sftp

bjoern-r / create_start_minichroot.sh

Created April 8, 2019 19:45

Script to create a minimal chroot with busybox, dropbear and dtach and allow ssh access on port 5022

	#!/bin/bash


	CHROOTDIR=/opt/minichroot

	mkdir -p ${CHROOTDIR}/bin
	mkdir -p ${CHROOTDIR}/lib64
	mkdir -p ${CHROOTDIR}/etc/dropbear
	mkdir -p ${CHROOTDIR}/dev
	mkdir -p ${CHROOTDIR}/tmp

bjoern-r / ovpn_route.sh

Created February 21, 2019 11:07

openvpn script to configure routes via different routing table

	#!/bin/sh

	# add to config
	# --route-noexec
	# --route-up script.sh
	# --route-pre-down script.sh

	echo "++++++++++++ $script_type ++++++++++++" \| logger -t ovpn_route
	#env \| tee -a /tmp/vpn
	#echo "--------------------------------------" \| tee -a /tmp/vpn

bjoern-r / bloom.py

Last active January 23, 2019 17:31 — forked from marcan/bloom.py

Simple Bloom filter implementation in Python 3 (for use with the HIBP password list)

	#!/usr/bin/python3
	#
	# Simple Bloom filter implementation in Python 3
	# Copyright 2017 Hector Martin "marcan" <marcan@marcan.st>
	# Licensed under the terms of the MIT license
	#
	# Written to be used with the Have I been pwned? password list:
	# https://haveibeenpwned.com/passwords
	#
	# Download the pre-computed filter here (968MB, k=11, false positive p=0.0005):

bjoern-r / etc_mosquitto_conf.d_sonoff.conf

Last active October 16, 2021 20:58

sonoff POW into influxdb

	#listener 1883 192.168.178.25
	listener 1883
	log_dest syslog
	log_dest stdout
	log_dest topic
	log_type error
	log_type warning
	log_type notice
	log_type information
	connection_messages true

bjoern-r / sonoff2emoncms.py

Last active December 2, 2018 11:31

sonoff POW MQTT to emoncms publisher

	#!/usr/bin/env python
	import paho.mqtt.client as mqtt
	import json
	import time
	import requests

	nodename="sonoff"
	apikey="--xx--"
	url="https://emoncms.org/input/post"

bjoern-r / randomTrace.md

Last active September 22, 2018 12:49

Random Tracepaces from around the world

From Japan

curl nixda.biz/ip

133.11.240.193

tracepath nixda.biz

 1?: [LOCALHOST]                                         pmtu 1500
 1:  gateway                                               1.652ms

bjoern-r / add_interfaces_dhcp.sh

Created March 8, 2018 17:10

script to configure all unconfigured interfaces for dhcp and bring them up. Ubuntu-16.04

	#!/bin/sh

	# Author: bri
	# Will add all interfaces in state DOWN to /etc/network/interfaces.d/auto.cfg
	# with option dhcp

	## for iface in `ls /sys/class/net/`; do
	/sbin/ip -br l \| awk '/DOWN/{print $1}' \|
	while read dev
	do

Björn bjoern-r