And it's done! Part 2 of the VT-110 Video Tape Recorder series is coming online at the top of the hour! Join in live for the premiere if you have time! It's all about the camera this time! youtu.be/7ryxzSpPw08 #YuTube

Ooof... some 3k lines of C# code later... github.com/Atkelar/hp98... #hp9825a

Another update for the HP 9825A... What have I been up to? Find out over here: meow.social/@atkelar/116... or here www.youtube.com/post/UgkxHS_... (bsky character limit too narrow for full post, sorry!)

maintenance mode

Coming up at the top of the hour: Part 1 in a series about an old video tape recorder device. Join in live if you have time! Bring popcorn, this is a long one! youtu.be/CoziYEwiD_U #youtube

Nehebkau's design is hilarious.

🖼️ Benjamin Schwartz

Magical wolfy. For @drakefate.bsky.social

[AI bubble bursts] billionaire tech bro: the stupid consumer did not understand it

I know we're all seeing 87 unhinged things per day, but "guys if our multi billion dollar product doesn't start being useful for something, literally anything, the people might not appreciate us wrecking the planet over it anymore" is a truly bananapants thing to say out loud

Coming up at the top of the hour: a small restoration project of a "Fluke Trendar 200 IC test clip" - Fluke's idea of a field tester for digital ICs. Join in live if you have time! youtu.be/7e5oEy9_Q24 #youtube

GOOGLE’S AI RESULTS ARE AS STELLAR AS ALWAYS

Does anybody here have an idea what these breadboard style sockets might be called? Or where I could get a bunch? These are used on several PCBs around prototyping kits I have, and I have a project in the queue that might benefit from these...

I adore @henrieke.bsky.social ‘s character, Kiki! I was so honored when they reached out to me for one of these sketch commissions! 🥺 (2026)

Oh, and I just today made this here: youtube.com/shorts/Mkk3F... 😁

And coming up at the top of the hour: Part 3 of the HP 9825A restoration and repair project! Join in live, if you have time... almost 50 minutes that is! youtu.be/LVP6H7Sk_sI #youtube

Happy New Year everdody! ...working on part three of the HP 9825A series; lots of flip chart shots in this one, so quite a bit of video production and post-production work. I hope to make the Patron/Member preview on Friday, but it's going to be close; didn't have a particularly good day yesterday.

Blood pudding.

Live Stream, starting in about 2 hours: details here meow.social/@atkelar/115...

Live Stream on Twitch! I'm getting stuff ready for a live stream later today. Stage Hands will be handling that, while I take a well deserved cat nap! More details: meow.social/@atkelar/115... www.twitch.tv/atkelar

It's...2026 already?

Day 24 - Merry Christmas! #TWAAC

Day 23 - And a view of the 9825A motherboard. We have the CPU under the heat sink, expansion bus in the rear and memory bus to the lower left. The top left is unused in the "A" model, up front is the power connector. #TWAAC

See you all next year!

Day 22 - Ah! I love these ceramic chips! In this case, it's a carrier for several pieces of silicone inside. The metal cover is glued on, so no peeking, but for a 1978 chip design, it is radical! HP 9825A CPU! #TWAAC

Coming up at the top of the hour: Part 2 (of 3) from my HP 9825A restoration/repair series. Join in live if you have time! youtu.be/U-ZiXVdHbwE #YouTube

Day 21 - I don't think I have shown the populated logic troubleshooting kit from HP? I got the box with the logic comparator and added the probes which came with other "lots" for completeness. #TWAAC

Day 20 - This is the chip set for the Sanyo calculator; Again, white ceramic chips! I got quite a few of these this year! #TWAAC

Day 19 - Time for some serious cleanup! Lots of keys... #TWAAC

Day 18 - Something scary for today: this is how a calculator from the 1970s looks like when a NiCd battery oozes all over. If you store devices: take out the batteries!! Sadly, this one is not salvageable. The LEDs in the display have turned into dust. #TWAAC

Day 17 - And a tiny little CRT! Black and white, but still: one of the tiniest CRTs I've seen, at least with magnetic deflection! #TWAAC

Day 16 - Screws... so many screws!! #TWAAC

Day 15 - And here we have the lit up version of the LED matrix display! They don't make things as beautiful as this anymore... #TWAAC

Day 14 - I was on vacation in Germany... my hotel room had bolts in the wall! I was tempted...! #TWAAC

My book got spotted at the Christmas market on the Disney studio lot. I'd rather be there myself but that's pretty cool! (You can still go cancel your D+ sub though, haha) (sob)

Day 13 - The insides of the Heathkit IT-1202 Nixie meter, pre-cleanup. #TWAAC

Day 12 - Yes! That is more like it and looks like the expected schottky diode. Reversed anyhow. The original one was a flat line. Literally. #TWAAC

Day 11 - And another ceramic IC; this one is quite the beast. Not so much for density or functoinality, but it might be considered one of the first ASICs out there. It has a bit of ROM, and quite a bit of glue logic inside; The 9825 KDP! #TWAAC

Day 10 - Cross view of the main PCB in the HPIB analyzer. I love how neat the traces are. #TWAAC

Day 9 - Another breadboard prototyping thing! This time, built into a sturdy metal suitcase. I converted it to my standard magnet strip style, so it takes my metal-backed breadboards. #TWAAC

Day 8 - Bare metal debugging! What you see is a bit of a trace on the data and address bus of an old computer system. Looking up the numbers in the instruction set and checking against the expected source code... #TWAAC

And it's done! - almost at least. Join in at the top of the hour, for part one of the HP 9825A restoration and repair! youtu.be/pJiv1oe8C70 #YouTube

Day 7 - Hmmm... the question is: is this a 7448 chip from week 47 in '74... or is it a 7447 chip from week 48 in '74? Funny coincidence, and I almost sent the chip back for being the wrong one... #TWAAC

my stupid stupid brain had to draw this