zxguesser

zxguesser , vor 8 Tagen an Random Englisch

Decided to expand my telesoftware page header lettering to a complete font.

No, you're procrastinating!

Some sample text in "Telesoftware". It reads "Warning! Computer 49: Sector error abort? [y/n]" followed by a blinking cursor. All the text is green apart from "warning!" which is flashing red.

zxguesser , vor 27 Tagen an Random Englisch

Well that was frustrating. I spent most of yesterday going round and round in circles trying to understand a complex bit of decoding logic, before eventually finding the mistake on the schematic which was making all my subsequent logic terms wrong.
Thanks Acorn Computers 😩

The pinout for a 74LS86, showing that it contains four exclusive OR gates

zxguesser , vor einem Monat an Random Englisch

I've fixed libzvbi's IDL format A databroadcast decoding enough to extract the mostly-pointless debug output I added to vbit2 as a proof-of-concept example data stream 🥳

Image shows a crummy script on my workshop PC decoding a teletext signal live from my raspberry pi via a capture card.

zxguesser , vor einem Monat an Random Englisch

Model all set up and green stickers on the power supplies ready for tomorrow.

If you're in the area: Giant Meccano Model Exhibition, The Embassy Theatre, Skegness.
https://embassytheatre.co.uk/shows/meccano-skeg-ex-2024/

zxguesser , vor einem Monat an Random Englisch

That was nearly a ghastly catastroscope. Almost left for the show without any rolls of paper tape besides the remaining couple of feet loaded on the machine.

zxguesser , vor einem Monat an Random Englisch

I'd like to say it worked first time, but then I'd have no explanation for staying up until 4AM soldering...
First all-up test of the new feed auto start/stop circuit with the rest of the machine actually connected was successful though 😅​
#meccano #hellschreiber

A complicated mechanism prints text onto ticker tape. The ticker tape begins moving automatically at the start of the message, and stops again shortly after the message ends.

zxguesser , vor einem Monat an Random Englisch

Woop! It verks!
Now I just need a circuit to energise the paper transit coil whenever there are print pulses (and for a couple of seconds afterwards)

An electromechanical contrivance constructed from a dense forest of Meccano parts. A paper ticker tape is being propelled through the mechanism by unseen components within.