[chbot] Robotics Group meeting, Monday 18 Octr 2021, 630pm, 5 Idris Road

[Synco Reynders]

Hi Robin,
   I have a RD6012. (without wifi module - yet interested if someone has
one I could try)
The power supply is not isolated (common -ve terminal). Also note the green
banana port on the front panel is not actually for earth, rather for
battery charging it's the positive terminal.
Cheers,
/s


On Wed, 20 Oct 2021 at 15:46, Robin Gilks <gb7ipd at gmail.com> wrote:

> Synco - that Riden module, any idea if the output is isolated from the
> input PSU to allow the making of a dual PSU?
>
> Can't find any info in online reviews, maybe best to just stick a meter in
> it!
>
> Cheers
>
>
> On Mon, Oct 18, 2021 at 10:34 PM Mark Atherton <markaren1 at xtra.co.nz>
> wrote:
>
>> Hello everyone,
>>
>> Good turnout with 28 attendees, and lots of huddles-of tech-talk. $40 +
>> 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, 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 started the evening talking about his effort commissioning the
>> first-article EHT power supply (the design of which had been discussed
>> that the previous meeting). He also passed around some oddments
>> including a SPDT water valve, with wax-motor actuator, a right angle
>> Schrader valve, and a well designed mirror mount.
>>
>> William brought in and discussed upgrades he has been doing to his ‘286
>> “laptop”, including the ‘287 co-processor.
>>
>> Andrew brought in and discussed a PCR automation jig he had been working
>> on, in conjunction with a physician in Zurich.
>>
>> Michael talked about his efforts designing a 3kW electric furnace, along
>> with some of the trials and tribulations. He also powered up a (medium
>> power) air-plasma source which was able to melt copper in air (!).
>>
>> Graham brought along a steel pendant-mold he fabricated for Molten
>> Media. Item had been made using spark-erosion from a graphite positive.
>> Most impressive.
>>
>> Robin talked about his adventures building a Rocket-Mass Heater. Also an
>> autopsy of the project. Most interesting. He also talked about a
>> diamagnetic piece he found while repairing and rebuilding a small
>> weather station.
>>
>> Synco talked about a cascaded power supply he has owned for a while.
>> Unit is capable of delivering around 60V at 12A, and features current
>> limit and a USB interface.
>>
>>
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>
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