tubetime

4 ms·

1.
by tubetime 3mo ago
Interestingly enough, the YTer found and used my photo of the 8" Bernoulli cartridge. These things are really hard to find nowadays! When they came out, most PCs did not even have a hard drive, and those that did typically only had a 5
2.
by tubetime 5mo ago
it's based off the original Signetics design :)
3.
by tubetime 1y ago
thank you, this was a very interesting read!
4.
by tubetime 1y ago
yes, most likely this is the case. also for the ethernet phy. there's really no good reason for it; these pinouts are pretty bog standard. chalk it up to corporate paranoia.
5.
by tubetime 2y ago
yes, and in 2022, the company that bought their stock, Excess Solutions, also shut down. https://twitter.com/TubeTimeUS/status/1548349563936722944
6.
by tubetime 2y ago
these exist, they're called tramways but they are more common in europe.
7.
by tubetime 3y ago
great project! i ran into it the other day and was impressed with the number of wires. i've been reverse engineering PCBs (mostly 2-4 layers) for a few years now and this is a part of the problem that i've been thinking about how
8.
by tubetime 3y ago
This is the most useful comment in the thread (so far)! This product would not work at all for any analog or power designs--EEs like to visualize current flow and a schematic is the best way to do that. Maybe if it could interoperate with s
9.
by tubetime 3y ago
you will enjoy https://507movements.com/
10.
by tubetime 3y ago
a whole bunch of stuff over the years. one unusual find was an original Williams tube memory from an IBM computer. https://twitter.com/TubeTimeUS/status/1441865304427036675
11.
by tubetime 3y ago
don't forget that the 3rd edition has a separate volume titled The Art of Electronics: The X Chapters which includes some really fascinating material i've never seen anywhere else. a lot of practical design tips for working with
12.
by tubetime 3y ago
a more useful book for audio electronics is Handbook for Sound Engineers by Ballou. there are detailed discussions of common preamp circuits, equalizers, and that sort of thing.
13.
by tubetime 3y ago
for analog IC design, i highly recommend the excellent Designing Analog Chips [1] written by the person who designed the 555 timer. other books are more comprehensive and will give you all the theory, but this book is concise, practical, a
14.
by tubetime 3y ago
that is why the word art is in the title. regardless, it gives you a good feel for how many engineers actually design stuff in the industry. the problem spaces aren't fully constrained, so you have to fill in the gaps with experience
15.
by tubetime 3y ago
nice work! i spent a lot of time learning to program using VB 1.0 for Windows (i could hardly wait and bought it as soon as it came out). it was so fast and lightweight compared with the alternatives. being able to call external DLL files w
16.
by tubetime 3y ago
and i still have the tube! at some point i should make a YouTube video about it.
17.
by tubetime 4y ago
yes, it is based on their reverse engineering work. i hand-copied every transistor from their netlist into a schematic and went from there.
18.
by tubetime 4y ago
at 50KHz, the LEDs mostly appear to be on, albeit at different brightness levels. but with the clock rate set much lower (say, below 50hz) it looks a lot more animated.
19.
by tubetime 4y ago
don't forget assembly costs. very few boards have such a large number of components, and they tend to be big and expensive server boards... larger boards are also more difficult to work with in general. JLCPCB plays a few tricks to kee
20.
by tubetime 4y ago
MOnSter 6502 creator here for any questions...
21.
by tubetime 4y ago
coauthor here: the book cover thing is a known issue that is turning out to be strangely difficult to solve. yes, the amazon cover is the older version.
22.
by tubetime 4y ago
we used a variety of tools: diamond saws, polishing wheels, hacksaws, and a lot of sandpaper. many of the samples had to be mounted using clamps or dop wax.
23.
by tubetime 4y ago
most definitely!
24.
by tubetime 4y ago
very close, we made some minor fixes before going to press.
25.
by tubetime 4y ago
we had a good number of subjects that didn't make it into the book. some we were not able to section in a way that looked as good as the rest, and others were redundant or didn't quite fit with the theme.
26.
by tubetime 4y ago
yes, there is a "behind the scenes" chapter that goes into some of the methods we used, including photographic techniques.
27.
by tubetime 4y ago
co-author here, feel free to ask questions.
28.
by tubetime 6y ago
you should see my other project! https://monster6502.com/
29.
by tubetime 6y ago
The card has multiple names--it's a bit of an inside joke. The official name is the "Snark Barker."
30.
by tubetime 6y ago
The card has multiple names--it's a bit of an inside joke. The official name is the "Snark Barker."

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