[chbot] Robotics Group meeting, 5 Idris Rd, 6-30pm, Monday 20 May 2024 report

[Mark Atherton]

Hello everyone,

Good turnout with 22 attendees, and lots of huddles-of tech-talk. $34 + 
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

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Mark opened by talking about the problem of sampling 27MHz data using an 
asynchronous 30MHz clock, and how the issue might be resolved using an 
external flip-flop and some post-processing.

Mark also mentioned the Experimental Noize DSP; an audio engine 
specifically designed for music-processing.

Graham talked about water-cutting, and grinding 10mm glass plate. He 
also talked about glass polishing using some very fine abrasive disks – 
1000, 2000 and 4000 grit.

Darren talked about Warp VPN; this corporate-grade service has some free 
options which are quite capable.

Rudy gave us an update on Molten Media. He also talked about a recently 
acquired ultrasound unit.

Andrew talked about low cost thermometers, and a homemade 
temperature-logger with LCD.

Robin talked about a PID based power supply controller, and associated 
issues.

Interesting YouTube content:

A home-made mouse  youtube.com/watch?v=qmX8vL-GbxU designed from clay, 
photographed, then processed into a 3D model using Meshroom.

Home made tracking air-gun youtube.com/watch?v=miRnNy7ZvIc capable of 
shooting down live, incoming Nerf-Missiles.