Armytek Elf C2 Max USB-C Headlamp Review
Armytek Elf C2 Max Specifications Introduction Torch in use Build quality LED, bezel, lens, reflector and beam Size and comparison User interface Batteries and charging Performance Beamshots Thermal…
NICEHCK Rockies REVIEW – When Nature Calls
The NICEHCK Rockies were provided by the manufacturer for my review – and I thank them for that. You can The post NICEHCK Rockies REVIEW – When Nature Calls appeared first on Music For…
Life TV: Video with 2 bits to spare
The Sony FD-30A has a very weird display: On the surface, it looks like a normal CRT, except that it's impossibly thin: the whole device is just under 4 cm thick. To do this, the tube is mounted…
Homebrew culture in amateur radio
Posted on 2026-03-19 In this post, I want to draw some parallels to the erosion of homebrew culture among radio amateurs with the way computer programming scene is getting changed with the advent of…
Wrappa IoT demo: BMP280 environmental monitor with Node-RED and I²C
The first video covered what the Wrappa system is and how setup works. This one answers the more important question: can you build something useful with it? I connected a BMP280 temperature and…
Audio Setup - 2026
Last year, I wrote about reorganising the hardware side of my music setup, along with a few software changes. However, shortly after that post, I started to experience some issues and decided an…
Just checking in
Hi all. It’s been a bit quiet from me recently, save the Digest posts composed of micro posts from my phone. That’s because my Pocket Reform, now my main laptop, has been off for repairs with MNT…
How many branches can your CPU predict?
Modern processors have the ability to execute many instructions per cycle, on a single core. To be able to execute many instructions per cycle in practice, processors predict branches. I have made…
E259: 2026 Florida International Audio Expo Highlights with Maurice Jeffries
Today, I join my friend and colleague Maurice Jeffries in his “New Apartment Lounge” in Orlando. We share our thoughts on some of the highlights from the eighth annual Florida International Audio…
Resetting toner levels on a Brother MFC-L8850CDW colour laser printer
THE SYMPTOM THE HISTORY I’m a big fan of Brother laser printers. I have a monochrome MFC-8840D that’s been pretty much trouble-free for probably 25 years, and a colour MFC-L8850CDW…
Repairing a ("smoked") MFJ-998 1.5kW automatic antenna tuner
Figure 1: The (repaired) MFJ-998 front, now working, sitting atop my Heathkit SA-2060 manual tuner and underneath my homebrew neon bar-graph VSWR/Power meter. Click on the image for a larger version.…
My Time With Pat…So Far
Pat Is My Friend I’ve been over the topic of my move from Windows and Windows-only ham software in the past, so I won’t rehash it. For minimal context I will say that there are no…
Thoughts on the Wide band gap developer forum
17 March 2026 I thank Infineon technologies for organising the hotly anticipated, annual, wide band gap developer forum for a discussion on cutting edge research and latest developments related to…
One Year with the HHKB: A Mini Review
The keyboard is the most important tool for a programmer. Choose wisely.
FISHERS (project pt.2)
-PLANNING/BREADBOARD STAGE: VOICING I was hopeful that the circuit would be a good candidate for circuit bending, since there are so many big chips, and lots of analog circuitry. Unfortunately, there…
Side project: FPGA
POSSE is done. Work is peaking. But I have a Xilinx VC707 and a pre-production Skylake-X box collecting dust, and an FPGA side project taking shape in my head (399 words)
Is simple actually good?
As I sit down to my Elektron Digitone 2 with the intention to compose something for my new game I just realized something. Not only have I not touched this machine in over 6 months, but I haven't…
NEOS Mouse: Reborn
Have you ever heard of the NEOS mouse? You've probably heard that it sucks. And that impression is well earned. But there is a good reason for this, so let me explain exactly why it sucks and what we…
Why a simple hardware timer beats every break reminder app
After trying macOS apps, Apple Watch reminders, and Apple Shortcuts, I found that a simple TickTime hardware timer is the best way to remind myself to take breaks.
Meet the Nordic nRF54LS05: The Cost-Optimized Entry Point to the nRF54L Series
Nordic's nRF54LS05A and nRF54LS05B bring the nRF54L Series' 22nm power efficiency to simple, cost-sensitive Bluetooth LE applications — with aligned pinouts across the nRF54L Series and nRF Connect…
An Idea I’m Exploring: Reinforcement Learning for a Balance Robot
Over the past few years, we’ve seen an explosion of interest in AI. Most of the conversation has been centered around large language models and generative tools. While those are fascinating in their…
Iot Energy Meter With Esp32, Lora - Web Monitoring
IoT energy monitoring system using ESP32, LoRa, and a custom web dashboard. It measures voltage, current, power, and energy in real time.
Breathing Easy Through a Power Failure
When the power goes out, so does my CPAP. Here's how I designed a battery backup to keep it running all night.
Building a Real-Time Power Outage Monitor with ESP32 and Slack
The moment of realization happened in Singapore. I was thousands of miles away from home, enjoying a trip, when I went to check my home CCTV footage through my phone. The screen stayed black. "Connect
Uperfect external monitor with coil whine
If you have problem with uperfect monitor and you are using with MacBook then this is for you. The coil whine is present when the display is powered only from MacBook. Uperfect monitors support power…
SSTC 1
SSTC 1 i built a small (about 30 W) class E solid-state tesla coil. it's not much for spark display but it works.
Bike Lighting
So the newest item on the to-do list is to get the bike set up with lights. To that end, I’m going to build a duplicate of the gravel bike’s front wheel, but around a dynamo hub.…
From Layerpad to Glide
The project did not start as a Kanata fork. It started as Layerpad: a standalone experiment in using touchpad activity as a modifier signal. The source lives at github.com/tompassarelli/glide. The…
My Prusa Mini+ is broken
Where I lament my broken 3D printer, and consider what to do about it.
A Leviasynth, and sometimes it really is that phone
I just got a Leviasynth about a week ago. I think this is my first time buying a new synth right after it releases. I always research everything extensively before buying, but I had to go for it…
Huskylens 2 | Vision Tracker
AI-Powered Smart Tracking Camera
Some foam is more equal than others
Some body mount pickups can be installed using foam underneath. This is not without its problems though so be aware of the following when you’re considering adding or replacing pickup foam…
Total Cost of Ownership
My Risograph ME9450 refurbishment journey rambles on as I’m currently awaiting additional parts from Riso (yay for friends who somehow are able to order directly from the manufacturer) which…
MSX Cartridge.
S ome months ago now, I decided to create a cartridge for MSX computers. I wasn't really sure which direction to take. I tried to keep it simple by using a fast processor, but the various tests I…
Prototype 32″ mountain bike
It’s alive! Prototype 32” build ready for testing (once the trails dry out a bit). I maintained the geometry as close as possible to my current bike so I can see how the wheels change the ride. The…
Introducing Versioned Model: Never Confuse Prototype Parts Again
Not sure about you, but I find prototyping with 3D-printed parts painful. When I iterate quickly over many revisions, I end up with a pile of parts that look very similar but differ in small ways. To…
The Cheapest Possible Computer (March 2026 Edition)
If you hand‑pick the right second hand hardware, you can still get a functional general‑purpose computer (all in) for under £30 in 2026 – this is including the screen, keyboard, storage, internet…
Drop #01 — The Khrinøleen
Ten moduleurs. That's it. One unique synth every two weeks. That’s simply how many we can build right now.
Radxa Orion O6 - finally an arm64 board I'm happy with
The Radxa Orion O6 seems to be the arm64 device I've always wanted. Finally! Because it supports UEFI boot, Debian can be installed with the vanilla installation media. Neither custom images, nor…
Arduino Ventuno Q First Look: Benchmarks, Specs and Mainline Linux
Hands-on Arduino Ventuno Q first look from Embedded World 2026 with Dragonwing IQ8 specs, Geekbench CPU/GPU benchmarks, and mainline Linux support.
WEKT Lucy R5 Switch Review
No, I did not accidentally repost a review of the LICHICX Lucy silent linears that I wrote in 2023. Believe it or not, these aren’t even LICHICX switches at all! This is the deep dive on the Lucy R5…
Efinix FPGA, Gusmanb Logic Analyser.
I have been experimenting with Efinix's development tools for several weeks now. Apart from the fact that overall I find these tools quite well-designed, efficient, and easy to use, the fact remains…
That time my laptop nearly exploded at school
Earlier this year I was in the campus library studying for my chemistry test later that day when something happened. While I was working on my homework earlier that day I heard some snapping coming…
Reading Mk4001mtd
Building a Reader for the World’s Smallest Hard Drive — MK4001MTD
Buckingham Army Airfield Special Event W4LX
The Fort Myers Amateur Radio Club (FMARC) will be honoring Army Air Force members that trained at Buckingham Army Airfield during World War II. The special event station will be on the air March…
I Reverse-Engineered the TiinyAI Pocket Lab From Marketing Photos. Here's Why Your $1,400 Is Probably Gone.
I wanted the TiinyAI Pocket Lab to be real. A few months ago I got burned by NVIDIA’s DGX Spark, a $3,999 “personal AI supercomputer” with one fatal number buried under the…
Pockethernet BER and ID Plugs
This short Article is in addition to my Pockethernet V2 Review I posted last year December. At the time of writing the original Article there was a announced BER Loop Adapter and ID Plugs but not…
Is SOT666 Really Standard?
Is SOT666 Really Standard? Spoiler: Not Really I’ve been investigating some quality assurance failures on my ESP32 rainbow boards and tracked a few issues down to a USBLC6 ESD protection IC in a…
MAX30102 $3 Heart Rate Monitor
Building a Heart Rate Monitor with an ESP32-C3 and MAX30102 You know how it is. You buy one cute little module from AliExpress and then think “it looks lonely, I’ll get another”. Before you know it,…