<div dir="ltr">The Christchurch Amateur Radio Club holds informal meetings every Tuesday night from about 7:30 onwards.<div>Trevor</div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Oct 16, 2018 at 1:26 PM <a href="mailto:rudy.kremers@123gaming.com">rudy.kremers@123gaming.com</a> <<a href="mailto:rudy.kremers@123gaming.com">rudy.kremers@123gaming.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div dir="auto">Hi Mark,</div>
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<div dir="auto"> I think I left my nuts on the trading table. Let me know if/when someone will be there next.</div>
<div dir="auto">Cheers,</div>
<div dir="auto">Rudy.</div>
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<div dir="auto" style="font-size:85%;color:#575757">Sent from my Samsung Galaxy smartphone.</div>
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<div>-------- Original message --------</div>
<div>From: Mark Atherton <<a href="mailto:markaren1@xtra.co.nz" target="_blank">markaren1@xtra.co.nz</a>> </div>
<div>Date: 15/10/18 9:50 PM (GMT+12:00) </div>
<div>To: Christchurch Robotics <<a href="mailto:chchrobotics@lists.linuxnut.co.nz" target="_blank">chchrobotics@lists.linuxnut.co.nz</a>> </div>
<div>Cc: Rory Deans <<a href="mailto:rory1@xtra.co.nz" target="_blank">rory1@xtra.co.nz</a>>, Ian MacPherson <<a href="mailto:ian@macpherson.gen.nz" target="_blank">ian@macpherson.gen.nz</a>> </div>
<div>Subject: [chbot] Robotics Group meeting, Monday 15 Oct 2018, 630pm, 5 Idris Road
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<div class="m_81944342418299862PlainText">Hello everyone,<br>
<br>
Enthusiastic turnout with 23 attendees, and lots of huddles-of <br>
tech-talk. $31 + change (in gold, and flat-money) collected and <br>
transferred into the robotics loose-change jar (for later banking). NB <br>
The group deposited over $150 into the brown box, $10 of the gold-coin <br>
box was used for associated change.<br>
<br>
Quick reminder: equipment donations are welcome for the trading table, <br>
but no CRT based product, printers, toner or items that are likely to be <br>
a disposal burden. All sales from the trading table should go into the <br>
brown box on the wall, and are directly for the benefit of our host <br>
club, NZART Branch 05.<br>
<br>
With thanks on behalf of the group,<br>
<br>
Mark Atherton<br>
<br>
PS Lots of interest in having Dave Jagger back if possible, and for him <br>
to talk about almost any aspect of his technical contribution to ARM; he <br>
was a great speaker.<br>
<br>
============<br>
<br>
William gave a demo of his latest audio-machine, the “blipper-4000p”. An <br>
agile audio generator based on the 555, along with some analogue switches.<br>
<br>
Andrew E brought along his completely home-made (MDF) CNC machine. Final <br>
unit will have plastic-cutting-board central guides, and PET plastic <br>
runners. Position is resolved using a home-made tincan opto-chopper. <br>
Apparently based on a design by the German engineer ‘Homofaciens’, this <br>
is quite an ingenious design.<br>
<br>
Andrew D brought along his scope-atron-9000; a 1960s vintage <br>
oscilloscope with the CRT replaced by a huge lens and a 320x200 LCD <br>
driven by an Arduino. Coloured display patterns form a fascinating a <br>
puzzle to the user; very creative piece of kit.<br>
<br>
Russel was helped into the club room with his 48VDC to 220VAC <br>
multi-kilowatt invertor, based on a Chinese series of pre-built modules <br>
(complete with semiconductors, and heatsinks). He talked about some of <br>
the issues of building and testing his unit.<br>
<br>
Graeme brought in more of his spark-eroded work, including a 6mm mild <br>
steel plate with a series of test cuts. The unit appears to be cutting <br>
about 3mm per hour. Quite impressive progress with this project.<br>
<br>
Steven talked about one of his recent purchases; a time-of-flight <br>
optical distance sensor.<br>
<br>
<br>
<br>
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Meetings usually 3rd Monday each month. See <a href="http://kiwibots.org" rel="noreferrer" target="_blank">http://kiwibots.org</a> for venue, directions and dates.<br>
When replying, please edit your Subject line to reflect new subjects.</blockquote></div>