EXPLORE — THE WHOLE YGG SYSTEM
Explore
A chronological stream of everything — guides, troubleshooting, notes, analyses, projects and curated external sources.
guide
A practical procedure for solving a specific problem or task.
guide A dumb wireless doorbell in Home Assistant via RF433 and ESP32 How to capture the signal of an ordinary 433 MHz wireless doorbell and send each press to Home Assistant via an ESP32-C3. guide An IR-remote ceiling light via ESP32 and ESPHome How to capture an infrared remote’s codes and control a light from Home Assistant via an ESP32-C3 – without the physical remote. guide An undocumented display on ESP32: identifying it and getting it running How to get a TFT display without a datasheet working on an ESP32: identify it, wire it up and initialise it. Based on the E32R35T board with an ST7796S controller. guide Czech voice control in Home Assistant: models and custom sentences Czech voice control in Home Assistant: local vs. cloud models (Whisper, Piper, Nabu Casa) and custom sentences for energy and the TV through Hassil intents. guide Split DNS on a single machine with systemd-resolved Making an internal domain resolve through a VPN resolver while the rest of the world stays public. Unfinished – the DNSSEC and fallback parts are missing. guide Cacti for a small virtualized infrastructure How to deploy Cacti on a dedicated host and use SNMP to watch load on both the hosts and the virtual machines – paravirtualized and fully virtualized alike. guide ProxyJump: through a bastion without holding tunnels in your head Getting scp, rsync and git through a jump host by writing it into ssh_config once. guide A read-only root on Raspbian that survives a cold power-off How to turn Raspbian on an SD card into a read-only root so the device survives being unplugged, and how to turn it into an image for mass deployment. guide Moving off a probably compromised server onto clean infrastructure How the move of an organization’s services off a probably compromised server onto new infrastructure actually went: the old stack, the split into virtual machines, the upgrade trouble and the hardening. guide Roundcube over MySQL with SSL, plus the password plugin Connecting Roundcube to a MySQL server over SSL and a working password_query for the password plugin. guide Examining a RAID member from a disk image with dd_rescue and mdadm Imaging a failing drive with dd_rescue and inspecting its mdadm RAID member over a loop device – without touching the original disk. guide Auditing the strength of your own WPA passphrase How to check whether your home Wi-Fi uses a weak WPA passphrase by capturing your own handshake and testing it offline. guide Restoring deleted files with extundelete Recovering deleted files from an ext3/ext4 filesystem with extundelete – mount read-only first and work by inode.