iiinova — where your digital self keeps evolving

Robert - DL3RR

@robertdl3rr.bsky.social

473 followers 578 following 420 posts

Chartered Engineer, Amateur radio (especially QRP), cycling, walking, armchair narrowboater, model railways and retro-computing.

Posts Replies Media

Robert - DL3RR @robertdl3rr.bsky.social · 20/01/2026

Just for fun, I thought I would use AI to design an antenna - Oh dear...

What is claimed to be a "clean, electrically correct schematic-style of the finished antenna, based on everything we've discussed". I don't even know where to begin describing the diagram!

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Robert - DL3RR @robertdl3rr.bsky.social · 06/11/2025

I found these in a dusty corner of Smith's a few years ago and cleaned out their stock. I don't think they knew what they had!

A WHSmith C15 computer tape and its box.

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Robert - DL3RR @robertdl3rr.bsky.social · 25/07/2025

I have spent some pennies on one of these... It should be arriving today, and I am ridiculously excited!

A picture of the Small Computer Central SC131 Pocket Sized CP/M computer.

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Robert - DL3RR @robertdl3rr.bsky.social · 18/06/2025

I love those old service manuals!

Picture of an old service manual for the Pye 1967 TV Chassis.

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Robert - DL3RR @robertdl3rr.bsky.social · 11/06/2025

What about this one? The advert even says it's portable.

Image of a large gasoline powered fan sourced from https://paulsfans.com/products/portable-fans

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Robert - DL3RR @robertdl3rr.bsky.social · 09/05/2025

I've just looked it up and it was 16 programs. So two cards which could be inserted eight ways. i.ebayimg.com/images/g/h2k...

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Robert - DL3RR @robertdl3rr.bsky.social · 04/04/2025

Lolwut?!? Then it's not actually a 16-bit Bidirectional I/O port, is it?

The datasheet for the MCP23017 proudly states that it has a 16-bit remote bidirectional I/O port. It then goes on to say that two of the pins are for output only.

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Robert - DL3RR @robertdl3rr.bsky.social · 08/03/2025

Return of the Vermicious Knids!

A large egg-shaped object with eyes. I am reliably informed its a Unicorn, not a Vermicious Knid.

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Robert - DL3RR @robertdl3rr.bsky.social · 24/02/2025

My Particular (Non Sinclair) favorite:

A BBC Micro screenshot showing that the command AUTO 100, 0 produces the error message "Silly".

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Robert - DL3RR @robertdl3rr.bsky.social · 10/02/2025

Indeed - It's also against the IARU's code of conduct:

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Robert - DL3RR @robertdl3rr.bsky.social · 09/02/2025

Back to writing a simulator/ emulator. It's a while since I've done one. (I must be a glutton for punishment). This time, it's a #DataGeneral #Nova.

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Robert - DL3RR @robertdl3rr.bsky.social · 25/12/2024

Ooooh! Look what Santa brought 🎅

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Robert - DL3RR @robertdl3rr.bsky.social · 16/12/2024

This was the cause of some very colourful language. Of course, the code on here was the ONE project I don't have a backup of... 🤬

A 32Gb SanDisk micro SD card split neatly into two pieces.

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Robert - DL3RR @robertdl3rr.bsky.social · 08/12/2024

Apparently, this is a reindeer head. Not a Vermicious Knid - whoops 😬

A crocheted egg-shaped object with eyes.

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Robert - DL3RR @robertdl3rr.bsky.social · 07/12/2024

A little side project. Playing around with the Framebuffer on the Raspberry Pi.

A photograph of a monitor displaying colour bars.

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Robert - DL3RR @robertdl3rr.bsky.social · 13/11/2024

Yesterday evening, I finally managed to get my #RC2014 real time clock board working. Note to self - when ordering parts make sure you check the datasheet! What I thought I ordered (Left) vs what I actually ordered (Right) 🤦

Diagramatic representation of a SIL Resistor Network in Star Configuration.

Diagramatic representation of a SIL Resistor Network in Parallel Configuration.

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