Purchased from AliExpress: https://www.aliexpress.com/item/1005008792209868.html?spm=a2g0o.order_list.order_list_main.5.5a001802UxAui3 Problem: no idea which pins were being used for I2C for the OLED display! TL;DR: Found device at 0x3C on SDA=48 SCL=47 Wrote a sketch to find it! Tested code with the U8g2 library:

Recently bought 4x “Human Motion Sensor” from AliExpress. They’re the ZigBee models, cheap (£3.87 UK BGP each) and wanted to do some investigation: https://www.aliexpress.com/item/1005009268596716.html?spm=a2g0o.order_list.order_list_main.5.1b381802tgJgig They’re listed as “ZigBee Human Motion Sensor Radar Mmwave Temperature and Humidity Sensor Security Burglar Works With Home Assistant Zigbee2MQTT“, and I went for the 2-in-1 model (presence and luminescence), rather… Read more: Human Presence Detector

Visual Studio Code supports special vscode:// deep links that let you open specific files directly from a web page, email, document, or even another app. This is especially handy if you work with Remote – Containers, WSL, or other remote development setups, because you can create links that jump straight to files inside those environments.… Read more: Opening Files in VS Code Using vscode:// Links (Local, WSL, and Docker)

If you’re not short of space, you can backup the SD Card without compressing it: 1. Insert your SD Card and check which /dev entry it appears as: In this instance it’s /dev/mmcblk0 2. Run the backup: If you need to compress the image, you can use the following. Note: this will take considerably longer.… Read more: R36S (or Clone) SD Card Backup

Firstly, you need to ensure that the version of split (part of coreutils) you’re using is greater than or equal to 8.13. You can check this by: Use the following bash commands: This splits it by 2000 lines (plus a header) into each file.

Make sure everything is up to date: Install the necessary packages to allow you to build from AUR: Create a folder for your AUR git downloads: Install ‘yay’ – essentially a helper for AUR: Allow compiles to use all / more cores to speed up builds: Using ‘yay’, search for package: Using ‘yay’, to understand… Read more: Useful Arch Commands

I purchased a ESP32-2432S028R board, and there’s very little information about it online, so here’s what I was able to find. Periheral Pins Comment Pinout: Lovyan Library settings:

TL;DR: My Yale SMart Hub stopped connecting to the internet… it was because of a DHCP Server setting relating to DNS. So, I’d noticed that my Yale Smart Hub (see below) had stopped connecting to the internet. Which causes a problem for my home alarm system… as while I can arm/disarm the alarm from the… Read more: Yale Smart Hub Internet Connection Issues

To copy your home directory to elsewhere (/mnt/destination in this example), excluding a few directories, use the following rsync command:

Windows Update managed to disrupt GRUB so that the system wouldn’t boot. I used GParted and some GRUB to fix it.