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Wireguard Server/Client
We use Wireguard VPN client on hangdevice because it allows us to have a secure privat IPv4 (and ...
Raspberry Pi 3 B - watchdog
Install apt-get install watchdog Warning: Do never call "cat /dev/watchdog" because it will res...
Raspberry Pi 3 B - power optimizations and boot adjustments
Raspberry Pi overview Image source: https://www.elektronik-kompendium.de/sites/raspberry-pi/19...
Raspbian buster basic OS configuration
The OS is installed on Raspberry Pi 3 B featuring a High Endurance Micro-SDHC card 32 GB 100 MB/s...
Updating software
Backup the SD card image for larger upgrade → see High Endurance Micro-SDHC card 32 GB 100 MB/s U...
Duet Web Control and Repetier Server Macros
Baby Stepping - clear (set zero) M290 R0 S0 ;clear babystepping Baby Stepping - Down 0.1 mm M2...
Duet Web Control vs Repetier Server
The following table compares some essential features required for Trikarus project. Featur...
Mobile access using tablet
Trikarus uses a Tablet Lifetab P9812 by Medion to show the Repetier Server frontend and Grafana. ...
Freifunk Mesh Repeater / Access Point
Trikarus uses Freifunk firmware router to build up a network which can be used remotely. The rout...
Raspberry Pi 3 B - system wide USB handling
Persisting connected USB devices The following external hardware is connected to hangdevice #su...
Python 3.7
Trikarus uses Python 3.7 scripts. Before using Raspbian buster release the stretch version was us...
Used Software / Firmware stack
Overview of used firmware and software + where to donate What? Why Version Source ...
Backups and misc cron jobs
Mount USB stick (backup stick) #format SD card mkfs.ext4 /dev/sda vim /etc/fstab configure fs...
mkcert & Go
We use mkcert tool to make secure localhost connections. For mkcert we need Go language installed...
Clearing the swap
vim /opt/swappy.sh #!/bin/bash free_data="$(free)" mem_data="$(echo "$free_data" | grep 'Mem...
AutoHotkey Emergency Button script
We use this script in local mode to have a quick emergency halt possibilty. Never use this over i...
arp-scan
Monitoring the network neighbours can possibly help to find attack vectors in Freifunk Network. O...
Ceiling module | Duet 2 Ethernet v1.04
Description (copied from https://www.duet3d.com/DuetEthernet) This is the latest PCB re...
Ceiling module | Raspberry Pi 3 B
Ceiling module | Smart Stepper rev 1/20/2019 by MisfitTech
Electrical Components on the MisfitTech Smart Stepper Board Allegro 4954LPT DMOS PWM Motor Dri...