I was doing some prep work for the upcoming LAoE video and learning about Thevenin equivalent circuits, something I need to understand better than I do, particularly how to calculate Vth and Rth. I built the circuit on my bench, but then got readings I didn’t understand, so I asked about it over on the EEVblog Forum: Help with Thevenin equivalent circuit. In the end it turned out that my initial readings were wrong for some unknown reason, but when I repeated them they came out right the second time…
Category Archives: Learning
Thevenin & Norton practice problems by Gary Tuttle
This is a note for Future John. The practice problems and associated documentation are here: Thevenin & Norton practice problems.
String case
We have camelCase, PascalCase, snake_case, Pascal_Snake_Case, SCREAMING_SNAKE_CASE, and ALLUPPERCASE.
Prefer zswap over zram
This in my feed today: Debunking zswap and zram myths.
tl;dr: If in doubt, prefer to use zswap. Only use zram if you have a highly specific reason to.
The Beacon Light | Project 11/30 | Maxitronix 30in1 | Learning Electronics In The Lab With Jay Jay
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Transistor Troubadour. I am the Transistor Troubadour!
In this video we do the 11th project from the Maxitronix 30in1 Electronics Project Lab Kit: The Beacon Light.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to examine the waveform.
We use the UNI-T UTi260B Thermal Imager to check the thermals (there wasn’t much to see).
We use the Kaisi S-160 45x30cm Repair Mat as our workspace.
Thanks very much for watching! And please remember to hit like and subscribe! :)
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
MECHANIC Hard Brush![]() |
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Reporting in on vibe coding experience
I was chatting to some friends on IRC about my experience vibe coding so far. Figured I might as well take some time to check in about that. I suppose first I should say that I am definitely not an AI coding guru, I have pretty minimal experience with it so far.
On some of my computers I have vscode configured with Github Copilot which gives me some auto-complete type support using AI technology. This is sometimes useful and sometimes not. I am yet to use Claude in vscode.
Mostly when I’m vibe coding something I am using ChatGPT via its web interface. I have a “Plus” account with them that I pay for each month. Usually I will ask it to do something for me, it will give me a pretty useful response, then I might get it to tweak a thing or two, or I might edit myself for a few tweaks, and we’re done. Following are things I have done like this recently.
Times Tables Practice. This was an app that I got ChatGPT to help me write. You need a large monitor to view this, it won’t work on your phone. This actually evolved in stages. First I got the 15 x 15 grid on the left working, then the visualization in the middle, then the visualization on the right. It was pretty ugly integrating those bits and pieces, I just copied-and-pasted them into one big file but didn’t take any effort to make them mutually consistent. I have been debating myself about what I should have done here. Maybe I should have used separate JavaScript and CSS files for each major feature so it was clear which code was generated with each feature, or if I should do what I did and just paste it all into the same HTML file. I’m still not sure about that, but the mono-HTML file does work.
Mental Arithmetic Practice. These are practice questions mostly to help me learn my fifteen times tables, but they have simple addition and subtraction questions too. This was pretty much one shot, I asked ChatGPT to make it and I got this result pretty much on the first try. I needed to make a very small edit to make “Random” the default choice instead of “Addition”.
Arithmetic Practice. These are longer arithmetic practice questions which require a pen and paper to figure out. ChatGPT got this pretty much right first go, but I made some minor tweaks to improve legibility and the results when printing on A4 paper.
Thevenin Equivalent Practice. This was my first go at generating practice questions for Thevenin equivalent circuits. This wasn’t quite what I was after so I gave it anther go.
Thevenin Equivalent Practice v2. This was my second go at Thevenin equivalent circuit practice. The visualization as given is pretty shit and I kinda gave up on this. Now my plan is to work through example problems I found elsewhere on the internet: Thevenin & Norton practice problems.
So that’s three successful vibe coding projects and two failures.
Learning the Art of Electronics: 1L.7 Oscilloscope and function generator | In The Lab With Jay Jay
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Spark Slinger. I am the Spark Slinger!
In this video we continue to work our way through Learning the Art of Electronics. In this video we finish 1L Lab: DC Circuits by learning how to use our oscilloscope and function generator.
We use the Rigol MSO5074 Mixed Signal Oscilloscope as our oscilloscope and we use the UNI-T UTG962E Signal Generator as our function generator.
Thanks very much for watching! And please remember to hit like and subscribe! :)
p.s. today I added slinger to my spell check.
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
Yum Cha Razor Blades![]() |
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Resonance in AC Circuits Visualised
Some good introductory material concerning resonance and such.
Making a saw guide
I don’t have a wood shop at the moment, but I hope one day I do.
The universe in a single chart
This is a log-log plot of the size and mass of various types of thing in the universe.

