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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...

Categories Uncategorized Comments: 0
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...

Categories Uncategorized Comments: 2
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...

Categories Uncategorized Comments: 0
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,...

Categories 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...

Categories 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...

Categories Uncategorized Comments: 0
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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