[chbot] Chchrobotics Digest, Vol 197, Issue 13
Graeme Absalom
clock_man_ok at hotmail.com
Thu Feb 22 04:29:06 GMT 2024
Hi All
I would like to thank you for the advice during my talk on Monday evening. I set up a breadboard with a 7812 configuration from a component app on my phone. I was horrified when the output was 11.60 volts. I searched through my stock of components and found another 7812. I replaced the initial (faulty one) on the breadboard and to my great joy got a voltage of 12.03 volts. So, it was the component and I wated a lot of time checking everything BUT!
Jaycar have refunded my money and said they have sold 30 with no complaints. I have had two fail and out of the thirty. I think it would be statistically significant.
Your advice has been very helpful. Thanks.
Graeme Absalom
________________________________
From: Chchrobotics <chchrobotics-bounces at lists.ourshack.com> on behalf of chchrobotics-request at lists.ourshack.com <chchrobotics-request at lists.ourshack.com>
Sent: Tuesday, 20 February 2024 1:00 am
To: chchrobotics at lists.ourshack.com <chchrobotics at lists.ourshack.com>
Subject: Chchrobotics Digest, Vol 197, Issue 13
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Today's Topics:
1. Old Magazines (Mark Beckett)
2. Re: Old Magazines (Matthew Bridle)
3. Re: Old Magazines (Mark Beckett)
4. Robotics Group meeting, 5 Idris Rd, 6-30pm, Monday 19 Feb
2024 report (Mark Atherton)
----------------------------------------------------------------------
Message: 1
Date: Mon, 19 Feb 2024 15:35:59 +1300
From: Mark Beckett <m.beckett at amuri.net>
To: chchrobotics at lists.ourshack.com
Subject: [chbot] Old Magazines
Message-ID: <eba00b37-cc31-43c4-8069-e2b229b6d8d7 at amuri.net>
Content-Type: text/plain; charset=UTF-8; format=flowed
Howdy
Before I send these to the dump is there any interest in a whole load of
Silicon Chip, Elecktor and a few Visual Basic magazines.
Mark
------------------------------
Message: 2
Date: Mon, 19 Feb 2024 15:37:28 +1300
From: Matthew Bridle <mnbridle at gmail.com>
To: Christchurch Robotics <chchrobotics at lists.ourshack.com>
Subject: Re: [chbot] Old Magazines
Message-ID:
<CAAupJrp6Emig6ji0_F=ZsyyKCZ2Q=0WTe=zur9feAQg+wZWo+Q at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi Mark
Yes please, I'd be interested!
Thanks,
Matthew
On Mon, 19 Feb 2024 at 15:36, Mark Beckett <m.beckett at amuri.net> wrote:
> Howdy
>
> Before I send these to the dump is there any interest in a whole load of
> Silicon Chip, Elecktor and a few Visual Basic magazines.
>
>
> Mark
>
>
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.ourshack.com
> https://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
> Meetings usually 3rd Monday each month. See http://kiwibots.org for
> venue, directions and dates.
> When replying, please edit your Subject line to reflect new subjects.
--
Matthew Bridle
Github: @mnbridle
Amateur radio: ZL2MNB
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Message: 3
Date: Mon, 19 Feb 2024 16:21:53 +1300
From: Mark Beckett <m.beckett at amuri.net>
To: chchrobotics at lists.ourshack.com
Subject: Re: [chbot] Old Magazines
Message-ID: <19d30961-6c75-4431-a85d-9fb73f011102 at amuri.net>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
okay thanks.
I'll try to sort out best method of getting them to you.
Have a whole load of other APC, PC World as well.
Mark
On 19/02/24 15:37, Matthew Bridle wrote:
> Hi Mark
>
> Yes please, I'd be interested!
>
>
> Thanks,
> Matthew
>
> On Mon, 19 Feb 2024 at 15:36, Mark Beckett <m.beckett at amuri.net> wrote:
>
> Howdy
>
> Before I send these to the dump is there any interest in a whole
> load of
> Silicon Chip, Elecktor and a few Visual Basic magazines.
>
>
> Mark
>
>
> _______________________________________________
> Chchrobotics mailing list Chchrobotics at lists.ourshack.com
> https://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/
> Meetings usually 3rd Monday each month. See http://kiwibots.org
> for venue, directions and dates.
> When replying, please edit your Subject line to reflect new subjects.
>
>
>
> --
> Matthew Bridle
> Github: @mnbridle
> Amateur radio: ZL2MNB
>
> _______________________________________________
> Chchrobotics mailing listChchrobotics at lists.ourshack.com
> https://lists.ourshack.com/mailman/listinfo/chchrobotics
> Mail Archives:http://lists.ourshack.com/pipermail/chchrobotics/
> Meetings usually 3rd Monday each month. Seehttp://kiwibots.org for venue, directions and dates.
> When replying, please edit your Subject line to reflect new subjects.
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Message: 4
Date: Mon, 19 Feb 2024 21:28:20 +1300
From: Mark Atherton <markaren1 at xtra.co.nz>
To: chchrobotics at lists.linuxnut.co.nz
Cc: Ian MacPherson <ian at macpherson.gen.nz>
Subject: [chbot] Robotics Group meeting, 5 Idris Rd, 6-30pm, Monday 19
Feb 2024 report
Message-ID: <e5bf3e2a-47a8-4296-8878-67235a214d5e at xtra.co.nz>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hello everyone,
Good turnout with 24 attendees, and lots of huddles-of tech-talk. $37 +
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 progress on the uCPU, a small, educational,
micro-sequenced 8-bit processor to be implemented on an FPGA in Verilog.
ISA, Architecture, Instruction map, and micro-sequence editor are
complete, as well as micro-sequencing of several instruction groups.
Graeme Absaslon talked about an interesting current measuring problem he
resolved using a Raztek sensor.
Robin talked about his ultrasonic anemometer project.
Rudy discussed a high dynamic-range current data-logging problem.
Interesting YouTube content:
The SAT Question Everyone Got Wrong. youtube.com/watch?v=FUHkTs-Ipfg
fascinating insight into apparently simple puzzle.
Homemade 16 bit CPU youtube.com/watch?v=5rg7xvTJ8SU implemented entirely
in Excel. Three instructions per second. Utter genius.
------------------------------
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End of Chchrobotics Digest, Vol 197, Issue 13
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