Відео

Nice project. Did you build your workbench area yourself? It’s pretty great. Seems like a very zen place to work on projects with all that wood.

This is so cool! That’s a really nice replica you have built.

Beautiful work, and great explanations and debugging.

You can get a free copy of the TV Typewriter Cookbook in addition the the article presented here at world radio history. The book has detailed theory on how the various circuits work. There are also a couple of articles in other editions of Radio Electronics for building an on screen clock for your TV. One uses discrete TTL circuits and works much like the TVT. The other article uses two custom MOS chips. One does all the video work and another the wall clock chip - early ASICS, good luck finding those!

Far Circuits does have PCBs for some really old projects too. Last year I built a speech compressor circuit from Pop. Elect. from a 1971 issue. Works great. The only catch was an IC that is pretty scarce now.

👍👍👏

'Subscribed'. Ooh! I'm looking forward to this. Many thanks sir.

Thanks for all these great videos! I love them! I also want to build more replicas because of this! I'd also love to see a video where you show how to take an existing pcb image like from a magazine and turn it into a pcb and gerbers files. Like do you use KiCAD? Just curious. Thanks either way!

nice

i've been wanting to build his top octave synth for a long while, it's a do it n die kind of project.

There are several types of stabilizers for MX style switch. The one you use is plate mount variant which is mounted on a plate (usually for the stability and make the switch align). I suggest you to use the PCB mount either the screw in or the clip in. And if you didn't already know, there's actually a community for keyboard enthusiast

I built one of these in the early 70's, I also designed and built a rudimentary graphics addon to the TV Typewriter. It had a 128 by 128 dot array, if my memory serves. I still have the monster in my attic....

I see a Ben Eater style computer on the wall. I built one as well. :)

I would have liked to see more about some of the logic on how the ASCII encoder worked, I'm guessing it's a large multiplexer with cross over logic, but a truth table or some discussion on that would have been nice. The images aren't clear enough to read it off the shown pages.

I built this project in the 1980's. Unfortunately, odd messages started appearing on the screen if the machine was left on while unattended, so I smashed it. I smashed it into tiny pieces, and burried it with the others.

There were some problems with the original TY Typewriter design. Ed Colle did a redesign for SWTP and that became the CT-1024. Colle's design started out as a customer programmer for electronic message board signs. Ed designed the electronics for the signs which had 504 150Watt flood lamps on each side. That company, Seso Corporation, went away in 1973. I was part of the field service team.

The hardest part about building a retro computer is building the dang case.

Sadly, according to his web site, Mike Douglas says he's no longer selling the Altaire Clone, which presumably means you can no longer purchase the chassis to build an 8800c.

8:29 thoc!

You're going to need that frequency specified. It's an NTSC thing.

I still have an SWTP audio amplifier that I assembled in the '70s! Back in the '70s I was in high school, and the TV typewriter overwhelmed me. Instead I bought a defective commercially built terminal at a hamfest and repaired it. Thanks for the video!

Artem love the new channel format and looking forward to the tv typewriter series. I have been wanting to dig into this project for awhile. Steve Leininger, the designer of the TRS-80 model 1, of which I own one, mentioned this project as an influencer on the TRS-80. Keep up the great work.

Fantastic video, congratulations for the channel and greetings from Italy! Who knows if one day you will think of making a replica of the Olivetti Programma 101 PCBs, it would be wonderful! According to many it was the first desktop computer in history back in 1965! I'm not lucky enough to have one, but I have a P603, a later variant from 1972 that also integrates a real teleprinter! I'm currently restoring it. These 70's machines truly instill a magical atmosphere for us vintage electronic enthusiasts!

Fantastic project! I became aware of Don Lancaster's work when I studied the history of the Apple 1 video terminal while replicating it on an FPGA. Steve Wozniak's design lineage can easily be traced to the TV typewriter. And, I must tell you, just like I am impressed with the cool projects you are building, I am also absolutely flabbergasted by your Radio-Electronics magazine collection!

In the summer of 1974, I made friends with a high school student who built that TV typewriter and brought it to the Connecticut State Science Fair. He said that the “cursor board was aptly named” because of how difficult it was to debug. It also turns out that the Molex connectors are a source of flakiness. Later, in high school, I built the TVT-2. With the 2102 static RAM and next generation design, the TVT-2 was much more reliable, but still sometimes flaky.

I was in high school in 1974-1978. And our AV studio had a tv typewriter attached to the school tv monitors for daily announcements. It broke an my teacher asked me to look at it. I had all of Don's cookbooks and was learing digital logic. But I was not prepared for the serial memory architecture.. it taught me a lot.. poor solder joints and the board stack connectors made debugging difficult .. and the original builder had added genlock to sync to studio cameras for titling video.. long story lots of learning and memories .. I don't remember the actual problem .. but probably a bad solder joint or mechanical issue. The stack of boards made debugging difficult. Along with poor scopes of the day. This lead me to bud my own 6502 home brew computer in 1977 and start my journey. Glad to see you building one again!

No mention of Don Lancaster's book "tv typewriter cookbook"?

I lived in Phoenix at the time, just 27 miles from Don, and visited him meany times. He was 'way out their', (if you know what I mean)! But a very nice guy.

I wish you had built the original version of the keyboard, not the modern version -- i.e., with the homemade keyswitches.

Awesome video!!

Nicely done. I had heard there were alignment problems between the boards?

oh wow, I have to say first 10 seconds of video absolutely got me. your setup looks absolutely incredible!

Fantastic....

Just look at that beautiful machine, you should be proud of yourself for making that, it's been a lot of work, thanks for sharing. Wouldn't it be something if someone could reproduce some of those prize editions of the magazines!

I Hate You, Because I Envy You LOL Well done Brotha

“Get the women out of the home!” - Lenin

Awsome! I always wanted to build the Lancaster's TV Typewriter. Thank you.

Very interesting project. Thanks for sharing! I loved these old magazines. I was a kid in the late 70s and was given a few boxes of old radio/electronics magazines . . .closest thing we had to browsing the web . . . lol

I did this when I was fourteen. I'm over sixty now. It's nuts to see this again.

I liked the "Ben Eater's SAP1" computer on the background wall!

. @ /|\/':''' \ \\ //_

I've had the entire set of Lancaster's TV Typewriter books for decades, but could never bring myself to go through the effort to build any of it, as by now it's just kind of a pointless novelty. I'm so glad to see someone actually build these things - I'm living vicariously through you. 👍

What an incredible coincidence haha, just 3 days ago I was also building a keyboard from scratch, to replace a missing one for Commdore SX-64 - and I used the exact same key cap set from amazon 😂 Though in my case I was less fortunate because I required an exact wiring scheme for the 25 pin connector, so instead of having a PCB I had to solder every single connection with wires manually (pain)

10:49 ASDF not ADSF. :)

Pretty Neat !

It would be interesting to see a build of one or more of Lancaster’s “Cheap Video” circuits for ‘70s hobbyist microcomputer systems.

I worry about using 12V with 10V electrolytics, probably within tolerance but they might be apt to fail prematurely. The waveforms you got at 10V shouldn't be a problem for TTL logic, it's very forgiving.

It's a common problem these, days, you come across a nice (old) project you want to build, but no PCB manufacturer wants to know about the PCB artworks that comes with them, they only except a gerber file.

1973!

Pinned Sockets would be much better, but I understand why your putting in those slip-sockets. I won't buy anything from Fleece-Bay! 👎 --- You wouldn't be able to please everyone, so NO music is a better idea!