Laurie Kirkcaldy - laurie.tech

Useful bash scripts for backing things up, analysing bits, etc etc

Container backups Somewhat stolen from here and updated to work with current LXC/LXD whatever it is I have installed. If in doubt, the snapshot process does take quite a while with my containers, not sure if that's just my ancient boot drive or the size of the containers. If

Adding a custom HTTPS certificate to Unifi (Ubiquiti Controller)

Way that actually works Copy over the .p12 private key (doesn't need to be a legacy PKCS12 cert, at least from what I've tried) and certificate chain. Export the private key to a PEM file `openssl pkcs12 -in [inputKey.p12] -nocerts -out [privateKey.pem] You must set a temporary password

Digitising a 3 Manual Compton-Makin Organ: Part 5 - Audio and software

Final bits is connecting up the MIDI control to something that can actually output Organ sounds. For this I used a ThinkCentre mounted under the front using a healthy amount of 3M velcro: This then connects via USB to the MIOS32 MidiBox, and USB, originally to a MOTU 828mkIII sound

Digitising a 3 Manual Compton-Makin Organ: Part 4 - Other minor things

The other minor repairs that needed to be done to be properly playable and servicable. One of the main issues was that the center manual couldn't be played properly - the keys only sat a few mm above the felt rest and therefore wouldn't activate properly when pressed down. In

Digitising a 3 Manual Compton-Makin Organ: Part 3 - Replacing the electronics

AKA the fun part! I actually did this work almost 2 years ago now, but I never got round to writing it up until now! I wanted everything to be controlled over MIDI, which is pretty much the standard way to communicate key presses, as well as stop changes and

LXC User/Group Pass-through

Let's say you have a user and/or group you'd like to pass through into an LXC container. Simply add the userid and/or groupid to the respective subuid/subgid files located in /etc/subuid and /etc/subgid in the form root::1 (why the thing is root, don't ask

Digitising a 3 Manual Compton-Makin Organ: Part 2 - Initial Reverse-Engineering

So, after having moved the organ into its temporary (hah) home, it was time to look through the bits that were in the organ. The manuals connected to this board with, is that really what it looks like, a MIDI connector! Well, digitising that part of the organ is already

Digitising a 3 Manual Compton-Makin Organ: Part 1 - The Move

So, being an avid user of eBay and also playing the organ, I did the next natural thing and bought an organ console (not one with real pipes mind you - I don't have space for anything like that!). It was listed as not working, but otherwise in good condition.

Boilerplate systemd Service

Because I always forget and have to cobble together multiple stack overflows to do what I want: create /lib/systemd/system/[name].service [Unit] Description= After=multi-user.target [email protected] [Service] Type=simple User=[optional] Group=[optional] ExecStart=/usr/bin/python3 /root/whatever.py WorkingDirectory=/root StandardInput=null

Making linked virtual machines in vSphere 6.7

Making linked virtual machines allows multiple (possible infinite) VMs to share the same boot disk with only changes being stored seperately, giving huge benefits to storage. For some reason, VMWare decided that this shouldn't be a nice easy UI button to do. Use the script here (https://github.com/pddenhar/

Customising the Win+X Menu with Shortcuts/Accelerators/Mnemonics

Grab the WinXEditor from WinAero (https://winaero.com/comment.php?comment.news.30) and follow their instructions for adding/removing the shortcuts. To add the accelerators (the underlined shortcut keys you get when you open the menu using the keyboard) simply rename whatever item you want to change the shortcut

high voltage

Building a DRSSTC [INPROGRESS]

Build log/tutorial on how we built our Medium sized DRSSTC including assumptions and a step-by-step guide.

recipe

Belly of Pork Chinese Style

Ingredients * 2 cloves of garlic * (Optional 5cm piece of ginger) * 450-675g of Belly pork (small pieces) * 4-5 tablespoons of sunflower oil * 350g of white cabbage (diced finely) * 2 teaspons (2x 5ml) of sugar * soy sauce * 100g of mushrooms * (Optional 25-50g flaked almonds) Modified Recipe Modified because putting stuff to the

Import 2022-12-26 11:27

.tech

This blog is hosted through a .tech domain! Luckily my name is apparently unique enough that no one had registered this domain and such it became mine! The community over at .tech is really awesome and has seen more than 300k domain name registrations in over a year and adoption

windows

Mount Local Drive over Windows Remote Desktop

Open remote desktop Remote desktop as normal, the drive you select will be mounted on the remote machine.

fpga

Getting into FPGAs - Quick-start guide for the EP2C5 Cyclone II Mini Board

Getting into FPGAs with a super cheap board

kramer

Setting up the Kramer Audio Matrix Part 1

I managed to pick up a 16x16 audio matrix switcher (VS-2216) from ebay for pretty cheap. But now we need a way of controlling it! It has a RS232 interface which should be pretty simple to interface with. The protocol for all (as far as I am aware) Kramer products

radio

IC7000 Radio-Computer Interface

Fairly recently I bought an Icom IC7000 radio. It's a great small radio with up to 100W of RF power output. However, the interface cable that it came with (called a Icom Data Mode Cable cable), has two cables for audio and a USB serial connection, great! However, looking at

grass valley

Hacking a GVG (Grass Valley Group) 200 Production Video Switcher to work with an arduino

![GVG-200]({{ site.url }}/images/GVG-200-Overview.jpg) I managed to get a GVG-200 Production Video switcher on ebay for cheap. Let's hack it to do fun things! The main board is meant to communicate to the frame switcher (the bit that actually does the video switching). This commuinicates over a DB15

windows

Passing VLANs through in Windows 10 (Realtek)

* NB, this guide is specific to the realtek series of networking cards * Let's say you have a managed switch or two and you want to be able to connect things on your computer onto a different VLAN. Normally you would have to have a seperate NIC on your computer to

audio

Problems with UDP streams and windows 10

The Problem Since windows 10 (anniversary addition I believe), windows changed how network adapter prioritisations are done. This gives rise to the problem of trying to play a udp stream but it actually binding to the wrong interface (seemingly even if all other adapters are disabled) and producing no output.

software

Software I use

Software and various programs I use across multiple operating systems

kramer

Setting up the Kramer Audio Matrix Part 2

Continuing from the last post (albeit the delay), the Kramer finally showed up. To my surprise, I realised looking at the connections on the back, that the Kramer wasn't just a 16x16 switcher, but it was stereo 16x16! Awesome! Looking in more detail at the connections: there are 3 connections

food

Chocolate Biscuit Cake

"What‽" you ask, "cooking recipes‽". Well yes, I thought I might as well put these things I make occasionally make on the internet! Ingredients 1. 200g Butter or margarine 2. 150g Golden Syrup 3. 50g Cocoa Powder 4. 200g Seedless Raisins 5. 400g Digestive Biscuits and a shallow cake tin.