I swear, ChatGPT knows everything. Today it told me I could run the following in the developer tools console to speed up YouTube video playback beyond the “maximum” of 2x up to 3x (or more!).
document.querySelector("video").playbackRate = 3.0;
This evening I was working on a battery replacement for a Philips QT4022 hair trimmer for my friend. They don’t seem to make this model any more, it was hard to find useful info about them. I made some notes over here. In the end I accidentally released the magic smoke, but at least I got some practice using my soldering iron and my microscope (this evening I learned how to take photos with my microscope and transfer them to my computer, haven’t done that before).
I did start off making a video about this, but it all went very badly, so I’m not gonna be publishing that one. :P
I learned a few lessons:
My soldering skills are pretty poor at the moment. What I need is lots of practice. I’m not sure what the best tips or the best temperatures are yet. I accidentally lifted some SMD components because I used too much heat too close to them.
RIP Philips trimmer.
Found some good videos with various approaches to repairing traces on a printed circuit board:
Over on How To Repair Damaged / Broken PCB Traces – 2 Great Methods, Mr SolderFix says that Loctite Tak Pak is good PCB glue. He recommends the Loctite SF 7455 activator, and the Loctite 382 instant adhesive. I tried to find some for purchase but it’s only available via international shipping and costs a fortune.
I have some glue in my drawer, particularly 24x 3G Super Glue for Plastic, Leather, Ceramics, Rubber, Metal, Wood Super Glue. Might give that a go for wiring a bodge wire to a PCB to see if it works okay or not.
For my reference, there are Conical, Knife, Chisel, and Bevel iron tips.
Found this video about how to desolder: Desoldering Made Easy – Amazing Trick || Soldering Tutorial. He was using 340°C iron temperatures.
Watching Pure Electronics Repair. Learn Methodical Fault Finding Techniques / Methods To Fix Almost Anything I learned that a thyristor—which is also known as a Silicon Controlled Rectifier (SCR)—is a type of TRIAC.
The name “silicon controlled rectifier” is General Electric’s trade name for a type of thyristor.
I was watching Relational Theory for Computer Professionals – C.J. Date and he made this fun remark:
There’s only three databases in the world: there’s departments and employees, there’s courses and students, and there’s suppliers and parts.
I’ve been meaning to make this change for a while now, and finally got around to it this evening.
I started blogging at blog.jj5.net back in November 2003 and continued through to May 2005. After that I stopped blogging for a while, but I started again at progclub.org in August 2011.
The ProgClub blog was imagined to be a group blog, my plan when I set it up was to have all the ProgClub members have an account on the blog, but that turned out to be a pretty poorly received idea. Eventually, and for a long time now, it has just been me (your host, jj5) over on the ProgClub blog.
Since this has become a personal blog, I figured it was time to move it from ProgClub back to blog.jj5.net, where it all began.
The transition should be seamless, old links should be properly redirected, old logins should continue to work, but if you run into any problems please let me know.
ChatGPT explains a Complex Programmable Logic Device (CPLD):
A CPLD (Complex Programmable Logic Device) is a type of digital integrated circuit that is used for creating custom digital logic designs. It’s a step between simple PLDs (Programmable Logic Devices) and more complex FPGAs (Field-Programmable Gate Arrays).
Click through for further details.