Removing the chainguard from a Creme Holymoly bicycle
Can't figure out how to get the chain guard off? The centre pries off.
David Schlachter
Latest posts
How to install Firefly III on FreeBSD
Installing personal finance manager Firefly III on FreeBSD.
Bypassing a clever CD-check
Decompiling to understand how a CD-check was implemented in an old program.
Creating recurring tasks in Todoist with cron
My approach to managing and creating repeating tasks using a cron scheduler in Todoist.
Dynamo light reviews
Reviews of dynamo-powered bike lights that I've tried.
Biotechnology at uOttawa
My thoughts on the University of Ottawa Biotech program: careers, job prospects — is it worth it?
How much space do Montreal's cars take?
How much surface area is occupied by cars in Montreal? I make an estimate.
Fix HomePod mini connectivity with the Bell Giga Hub
HomePod minis having trouble connecting with a Bell GigaHub? Here's how I fixed their connectivity issues.
Changes in religion in the 2011 and 2021 Canadian census
Comparison of growth and losses in Canadian religious groups in the 2011 and 2021 census.
Annual budgets with Firefly III
Self-hosted personal finance manager Firefly III budgets monthly, whereas I budget annually. Lychnos is a web frontend for Firefly III that supports yearly budgets and transaction entry.
Configure ddclient for Cloudflare Dynamic DNS
Configure automatic updates of Cloudflare DNS records using ddclient.
Fix songs skipping and looping in koel
Analysis and fix for an issue with songs stopping and looping in self-hosted music streaming software koel.
Physicochemical Limitations of Capillary Models Applied to High-Concentration Polymer Solutions
Main findings from my Masters research: how models of fluid absorption into powder beds can better predict the behaviour of polymeric solutions.
Windows 11 Device Encryption on the Lenovo T480
Disable Thunderbolt to enable Device Encryption in Windows 11.
List of Mormon History Association "Best Book" award books
The MHA's list of their "Best Book" award winners only lists authors, not the book titles. Here's an easier list to browse.
Visualize dependencies of structs in Go
Tool to help understand relationships between custom struct types in large Go projects.
OBS Studio Virtual Camera on FreeBSD
Use the OBS Virtual Camera on FreeBSD using webcamd.
Samba with macOS Spotlight on FreeBSD with Elasticsearch
Set up samba on FreeBSD so that macOS clients can search file shares with Spotlight.
Distinguishing Chinese, Japanese, and Korean characters (Quiz)
Short quiz to test recognition of Chinese, Japanese, and Korean text.
bhyve UEFI shell, Linux, and grub
Use the EFI shell to boot a newly installed Linux guest in bhyve.
Intel 8265 Bluetooth on FreeBSD
Use iwmbtfw to set up Bluetooth on FreeBSD with recent Intel cards.
Pumpkin pie recipe [Video]
One of my favourite desserts! Recipe from my great-grandmother.
CCEC 2020 Reg Friesen Competition [Video]
Review of pre-print manuscripts on remote instruction since January 2020. How are students and instructors adapting the the global pandemic?
CCEC 2020 3-Minute Pitch [Video]
Summary of my Masters research at the 2020 Canadian Chemical Engineering Conference. First-place in the 3-Minute Pitch competition.
Firefly III monthly summary emails
Self-hosted budgeting software firefly-iii doesn't have an email reports feature. I missed this from Mint and re-implemented it with the API.
Martin Schlachter and Justina Tschosick
Everything I know about my great-great-great grandparents Martin Schlachter and Justina Tschosick.
Videoconferencing on FreeBSD
Support for videoconferencing platforms, like Zoom, Skype, and Teams, on FreeBSD.
USB audio devices on FreeBSD
Hardware support and configuration for USB audio devices, such as the Behringer UMC22 sound card, on FreeBSD.
Using a webcam on FreeBSD in web browsers
How to use your webcam with Chrome and Firefox in FreeBSD
Filename encoding errors in macOS Time Machine backups
Mysteriously failed backups can sometimes be traced to filename text encoding issues.
Adjusting acpi_video brightness increments on FreeBSD
Replicate the behaviour of intel-backlight in acpi_video on FreeBSD by customizing the brightness adjustment increments.
FreeBSD WiFi PCI Passthrough: Intel Wireless 8265, bhyve, 13-CURRENT
FreeBSD drivers for Intel 8265 are limited to 802.11g speeds. Use bhyve PCI passthrough for full 802.11ac throughput.
Review: Solution processable liquid metal nanodroplets by surface-initiated atom transfer radical polymerization
Background and review of 2019 paper by Yan et al: "Solution processable liquid metal nanodroplets by surface-initiated atom transfer radical polymerization" (Nature Nanotechnology).
FreeBSD on the Lenovo Thinkpad T480
Compatibility of FreeBSD on a Lenovo Thinkpad T480, notes and fixes (HiDPI, Trackpad, camera, etc).
ICC Profiles for Canon MP480 and CanoScan LiDE 700F
ICC profiles and colour calibration, with example scans, for Canon MP480 and CanoScan LiDE 700F scanners.
Known and available recordings of The Cangelosi Cards
Recordings by jazz band The Cangelosi Cards are hard to find! This page has links to those I could track down (excluding YouTube).
Expanding SZDD MS-DOS archives on macOS
Use a DOS emulator on macOS to expand an SZDD archive created with MS-DOS COMPRESS.EXE
Tab DJ: Balance left-right channels and volume of tabs
Chrome extension to adjust left-right balance and volume of tabs. Can be used with a DJ cable to DJ from a web browser.
SpectraDoze: Colored Noise Generator for the Web
Coloured noise generator (white noise, pink noise, etc) for the web, inspired by the Android app ChromaDoze.
How to choose music as a swing DJ: Venn diagram
Advice for new DJs: choose music that both you and your audience love.
FreeDNS subdomains in anonymous proxy campaign
Ever wonder about mysterious subdomain requests on FreeDNS? Analysis of some repeat requests exposes a censorship evasion network.
400 MHz processor in a Macintosh PowerBook G3 PDQ?
System Profiler reports a 400 MHz processor in a model that only came in 233, 266, and 300 MHz configurations. Is this an overclock, an upgrade card, or something else?
Avahi "Host name conflict" in FreeBSD jail
Turns out only one FreeBSD jail per network interface can run Avahi at the same time.
Install stand-alone 1Password from App Store on iOS
How to install 1Password 7 stand-alone version on your iPad or iPhone, without a subscription.
Ten ways to improve any engineering class [Video]
Ten easily-applied ideas taken from the literature on teaching in engineering. Presentation won second place in the Reg Friesen competition at the 68th Canadian Chemical Engineering Conference.
Registering for affordable French classes at the Commission scolaire de Montréal
Full- and part-time French classes in Montreal for about $50 per semester? Information about these classes is available only in French: here's an overview if you're not yet fluent enough to get the details in French.
Calculate amounts from Régie du logement rent increase decisions
Tool to calculate amounts reported by a landlord for a rent increase decision from Quebec’s Régie du logement. Helpful for estimating the increase that would be granted by the Régie.
Whole cell biosynthesis of N-acetylneuraminic acid derivatives [PDF, 1.8 MB]
Undergraduate thesis for my Honours BSc in Biochemistry from uOttawa. Production of a valuable natural product in genetically engineered E. coli.
Schlachter family website (1999)
Many stories from Mexico in this family website recovered from an old hard-drive.
Thoughts on used bicycles
Things I look for when choosing or improving a bicycle.