hyperdata.it – Page 4 – here we go again

2021-05-09

No Such Thing as a Coincidence

I’m only now making a start at preparing the orto (veg plot) for planting. My neighbour Achille did his annual favour of digging it over with his little excavator a good few weeks ago. It would have been better if I could have started say 3 weeks sooner, but the weather has been almost continuously wet until yesterday. Suddenly, hot...

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2021-04-21

Line of Doody

Short post to mention the ‘bad apple’ narrative around the police. Setting the scene : two very significant precursors of modern police were the cops employed by West Indies merchants on the Thames and slave patrols in Carolina. There’s a dichotomy within the police between their job as crime-preventors, protectors of the public, and their role as the domestic strong...

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2021-03-22

Not Climbing

For a few years now I’ve had a leaky roof. It has to rain a lot to be an immediate issue (puddle on bathroom floor) but this last winter there were a couple of days with torrential rain, the ceiling is starting to look dodgy. I’ve put it off and put it off, because the only options seemed to have...

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2021-03-04

Demonic Electronic Firefly (3v Flashing Joule Thief)

A few weeks ago I gave my girlfriend a Kinder Egg. She gave me back the (turtle!) toy container, suggesting I might have a might have a use for it. Of course I had: lucciola elettronica! Aside for having the Best Name Ever, the Joule Thief is a remarkable little circuit: [Pic from Wikipedia by Rowland, CC BY-SA 3.0] It’s...

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2021-03-04

Boost/Buck Converters for a Split Rail Supply

tl;dr No. I like op amps and they are best served with a 0v-referenced split rail supply, say +/-15v. I’ve got a bag of cheap, adjustable, switching boost converter modules [1] and a bag of cheap, adjustable, switching buck converter modules [2]. I have an old laptop power supply with 12v out. Can I get +/-15v? First (mildly irritating) snag,...

Electronics Comments: 0

2021-03-01

Simple Drawing Robot, Python Sums Weirdness

The WHO have an Adult ADHD Self-Test. It’s very short, 18 questions and “Six of the eighteen questions were found to be the most predictive of symptoms consistent withADHD.”. Number 6 is : How often do you feel overly active and compelled to do things, like you were driven by a motor? I’ve used Arduinos & similar microcontrollers before, until...

Coding/Electronics Comments: 0

2021-02-19

Bitcoin, Ponzi & Capitalism

Just some passing thoughts I felt like spitting out. Coincidentally I watched another episode of Adam Curtis‘ excellent Can’t Get You Out of My Head documentary series last night. I’ve seen talk of Bitcoin as being a kind of con, because it’s all virtual. But virtually all money is virtual since Nixon dropped the tie to the gold reserve. A...

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2021-02-07

Headless Chatterbox

I wanted to jot down some notes about where I’m at with this thing, on writing the title realised a peculiar coincidence. Bit of tech stuff below, but first… For a kind-of fork of my own project, Chatterbox (a speech-like synth) I am making another version of the hardware without all the manual controls. It’s common to call software without...

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2021-02-04

State of Play

These are the projects I’m working on. All are open source, most code etc. is at https://github.com/danja. My Home Page is at http://hyperdata.it. This doc is a work in progress. HKMS – Hyperdata Knowledge Management System Chatterbox About Hyperdata Knowledge Management System Status : subsystems in different stages HKMS is the umbrella name I’m using for a variety of applications...

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2021-01-25

Chatterbox, next

My main reason for Chatterbox was to have something with a well-defined target that I could focus on for a few weeks and get my head away from all the open-ended projects I was being overwhelmed by. About a year on I realise it wasn’t the best choice. Making noises with microcontrollers turns out to also be open-ended. But I...

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