[chbot] Robotics Group meeting, 5 Idris Rd, 6:30pm, Monday 15 July 2024 report

[Andrew Errington]

Hi all,

The board I passed around was a CH32V307VCT6. Read all about it here:

https://www.aliexpress.com/item/1005004350410929.html

There are a couple of discussions online, but not many. It's the cheapest
Ethernet-enabled device I could find (don't want wifi, thanks), so I'm
hoping I can get it to do something.

Andrew

On Mon, 15 Jul 2024, 21:56 Mark Atherton, <markaren1 at xtra.co.nz> wrote:

> Hello everyone,
>
> Good turnout with 24 attendees, and lots of huddles-of tech-talk. $35 +
> change (in gold, and flat-money) collected and transferred into the
> robotics loose-change jar (for later banking).
>
> All sales from the trading table should go into the brown box on the
> wall, and are directly for the benefit of our host club, Christchurch
> Amateur Radio Club, NZART Branch 05.
>
> Equipment donations are welcome for the trading table, but no CRT based
> product, printers, toner or items that are likely to be a disposal burden.
>
> With thanks on behalf of the group,
>
> Mark Atherton
>
> ----------
>
> Mark talked about design progress and the mechanical design issues
> associated with the audio DSP project. Schematic is complete with
> details slowly being filled in. Quite a lot of effort went into
> specifying push buttons, rotary encoder, potentiometers, rotary switch,
> and LCD components which will play together well on the control surface
> (actually the top surface of a Hammond 1598BBBK ABS enclosure).
>
> Mark also briefly touched on a visit to Sydney tools, Blenheim Road.
>
> Rudy talked about the disassembly of some petrol pump EFTPOS types
> devices, and associated security features.
>
> Russell gave us a fascinating talk about his project to migrate a Prius
> power plant + drive chain into a camper-van.
>
> Andrew E talked about his laser-cut scalable storage system.
>
> Darren talked about a visit to an EV uses-group, and a presentation by
> Meridian related to charging stations.
>
> Bevin talked about security systems associated with an old mechanical
> till and well as some commentary about social-engineered phishing, and
> fraud.
>
> Interesting stuff on YouTube:
>
> youtube.com/watch?v=u3-Kw9u37I0 static testing of a first-stage rocket
> engine goes awry. Unexpected liftoff without fins, guidance, or second
> stage.
>
> youtube.com/watch?v=Lu56xVlZ40M OpenAI Plays Hide and Seek, with some
> unexpected results.
>
> youtube.com/watch?v=nKIqYKiAmpI&t=10s worlds silliest boost converter.
> 9v to 70v using only one capacitor, and a little conservation of charge.
>
>
>
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