<div dir="auto"><div><a href="https://imgur.com/a/RUcwYpQ">https://imgur.com/a/RUcwYpQ</a></div>You wanted to know what was inside one of those splitters? Managed to get the lid off one of them!</div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, 18 Aug 2025 at 21:31, Mark Atherton <<a href="mailto:markaren1@xtra.co.nz">markaren1@xtra.co.nz</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello everyone,<br>
<br>
Good turnout with 32 attendees, and lots of huddles-of tech-talk. $47 + <br>
change (in gold, and flat-money) collected and transferred into the <br>
robotics loose-change jar (for later banking).<br>
<br>
All sales from the trading table should go into the brown box on the <br>
wall, and are directly for the benefit of our host club, Christchurch <br>
Amateur Radio Club, NZART Branch 05.<br>
<br>
Equipment donations are welcome for the trading table, but no CRT based <br>
product, printers, toner or items that are likely to be a disposal burden.<br>
<br>
With thanks on behalf of the group,<br>
<br>
Mark Atherton<br>
<br>
===========<br>
<br>
Coming up next month, Roger Corbett with the art of EME – bouncing radio <br>
signals off the moon, and back.<br>
<br>
Mark talked about a semi-discrete optical interface found on an old <br>
fibre-optic terminal. The unit has a laser diode on-axis with the fibre, <br>
while the detector assembly is mounted at 90 degrees, presumably with a <br>
tiny dichroic prism inside to separate the light by wavelength. Body of <br>
whole unit is 6 x 6 x 11mm.<br>
<br>
ChatGPT 5 was put through its paces by uploading complete datasheets for <br>
two obscure signal processor ICs used in a CD player, along with a 20MB <br>
capture of Q channel and control channel data. The AI successfully <br>
decoder Table of Contents for the CD in the player, and has managed a <br>
credible description for each of the machine states. This is a huge leap <br>
when this was attempted using ChatGPT 3o.<br>
<br>
William talked about some of his 3D printing adventures.<br>
<br>
Darren talked about AI terminology, hallucinations, and what actions <br>
some businesses are taking to manage the process.<br>
<br>
Andrew Dean gave us an update on his latest escape-room technology. <br>
Also, a very interesting discussion about how the new-world is <br>
unraveling for his son as he moves into early adulthood.<br>
<br>
Ross talked about the fabrication of a 3D puzzle constructed entirely <br>
from 3mm laser-cut MDF.<br>
<br>
Michael gave us an update on his 'DIY mobile phone'<br>
<br>
Graham Talked about drilling 6mm 316 SS sheet.<br>
<br>
===========<br>
<br>
Interesting videos:<br>
<br>
Homemade diesel lawnmower <a href="http://youtube.com/watch?v=wDU-X484St0" rel="noreferrer" target="_blank">youtube.com/watch?v=wDU-X484St0</a><br>
<br>
Why learn to code failed <a href="http://youtube.com/watch?v=bThPluSzlDU" rel="noreferrer" target="_blank">youtube.com/watch?v=bThPluSzlDU</a><br>
<br>
Agriculture: Combine Harvester & Chieftain Tank <br>
<a href="http://youtube.com/watch?v=m1tTeRhZCt0" rel="noreferrer" target="_blank">youtube.com/watch?v=m1tTeRhZCt0</a><br>
<br>
Floppy Disk from Scratch <a href="http://youtube.com/watch?v=TBiFGhnXsh8" rel="noreferrer" target="_blank">youtube.com/watch?v=TBiFGhnXsh8</a><br>
<br>
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