quick-turn boards...

On 2020-08-11 17:10, Lasse Langwadt Christensen wrote:
tirsdag den 11. august 2020 kl. 22.40.25 UTC+2 skrev Phil Hobbs:
On 2020-08-11 16:32, Lasse Langwadt Christensen wrote:
tirsdag den 11. august 2020 kl. 22.19.33 UTC+2 skrev Phil Hobbs:
On 2020-08-11 15:44, John Larkin wrote:
On Tue, 11 Aug 2020 14:49:59 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2020-08-11 12:38, jlarkin@highlandsniptechnology.com wrote:


This is our first use of an ST Arm, which we are using now that the
NXP parts seem to be going EOL. I hate when people do that, dump on
their customers.

Which ones are going away? We use a lot of LPC845s and LPC804s, and are
looking at using one of the NXP M4F/M0+ parts.

LPC3250, and I think some of the 1768 series.

Thanks, good info.



The ST factory headers are hideous. What toolchain are you folks using
with the ST parts?

I\'ll ask Paul the next time he\'s in. He has said some baddish stuff
about their libraries. But first time on a new CPU, things happen.

He wrote a boot loader that we jtag into the STM32F207IGT6. We might
eventually have a distributor do that. At powerup, the boot reads a
plug-in serial flash chip that has the specific runtime code and the
FPGA image.

We do something similar--Simon wrote a bootloader that can flash the 845
over half-duplex MODBUS, which is pretty slick. The stock BL can do it
over full-duplex UART, SPI, or SWD. We\'re using it in the sensors in my
\"connectors for high vibration\" thread.

The STM build in bootloader can flash from UART/USB/I2C/SPI/CAN


In half-duplex? That\'s the parlour trick.


nope, but more interfaces, but I\'d guess the nxp can do those too

Probably so.
Click to expand...

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
On Tue, 11 Aug 2020 14:49:59 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2020-08-11 12:38, jlarkin@highlandsniptechnology.com wrote:


This is our first use of an ST Arm, which we are using now that the
NXP parts seem to be going EOL. I hate when people do that, dump on
their customers.

Which ones are going away? We use a lot of LPC845s and LPC804s, and are
looking at using one of the NXP M4F/M0+ parts.

The ST factory headers are hideous. What toolchain are you folks using
with the ST parts?

Cheers

Phil Hobbs
Click to expand...

ST\'s HAL system is hideous for sure.

Their regular old .h file for registers is OK.

I use the HAL only for initialization from their CubeMX tool then it\'s
non-HAL the rest of the way.
 
On 8/10/2020 7:56 PM, John Larkin wrote:
On Mon, 10 Aug 2020 15:51:19 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 23.35.19 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 14:00:29 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 22.08.33 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 12:49:05 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 21.31.59 UTC+2 skrev John Larkin:
Who is good for really quick-turn double-sided PC boards? 2 or 3 days
delivered.

https://www.dropbox.com/s/t30ggxa5q3z34z5/Cap_Hack.jpg?raw=1

your tormach ?

That\'s an option. The circuit is pretty simple!

yeh, looks like a few holes and an outline, wouldn\'t take more than a few minutes

We\'ll do a PCB, with proper plated holes, silk, solder mask, all that.

The layout is done!

My contract layout guy suggests sierra circuits or rushpcb or
sunstone. We\'ll get quotes for 30 or so.

if you want to nitpick, you should move one of the wires to the other end
of the board so all the caps have the same trace length and share current

One of my guys started on a PCB layout and another headed for the
Tormach.

Tormach won.

https://www.dropbox.com/s/95qvpqledr9tkuw/P902_Cap_Fix_1.jpg?raw=1

He doesn\'t mind doing 25 this way.
Click to expand...

C32... Oops!
 
On Monday, August 10, 2020 at 8:56:49 PM UTC-4, John Larkin wrote:
On Mon, 10 Aug 2020 15:51:19 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 23.35.19 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 14:00:29 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 22.08.33 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 12:49:05 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 21.31.59 UTC+2 skrev John Larkin:
Who is good for really quick-turn double-sided PC boards? 2 or 3 days
delivered.

https://www.dropbox.com/s/t30ggxa5q3z34z5/Cap_Hack.jpg?raw=1

your tormach ?

That\'s an option. The circuit is pretty simple!

yeh, looks like a few holes and an outline, wouldn\'t take more than a few minutes

We\'ll do a PCB, with proper plated holes, silk, solder mask, all that.

The layout is done!

My contract layout guy suggests sierra circuits or rushpcb or
sunstone. We\'ll get quotes for 30 or so.

if you want to nitpick, you should move one of the wires to the other end
of the board so all the caps have the same trace length and share current

One of my guys started on a PCB layout and another headed for the
Tormach.

Tormach won.

https://www.dropbox.com/s/95qvpqledr9tkuw/P902_Cap_Fix_1.jpg?raw=1

He doesn\'t mind doing 25 this way.
Click to expand...

On the main board I would solder the wires to C36 and then run the wires on the board to C35 and RTV them down in between C35 & C36
 
On Wed, 12 Aug 2020 07:35:23 -0500, John S <Sophi.2@invalid.org>
wrote:

On 8/10/2020 7:56 PM, John Larkin wrote:
On Mon, 10 Aug 2020 15:51:19 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 23.35.19 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 14:00:29 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 22.08.33 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 12:49:05 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 21.31.59 UTC+2 skrev John Larkin:
Who is good for really quick-turn double-sided PC boards? 2 or 3 days
delivered.

https://www.dropbox.com/s/t30ggxa5q3z34z5/Cap_Hack.jpg?raw=1

your tormach ?

That\'s an option. The circuit is pretty simple!

yeh, looks like a few holes and an outline, wouldn\'t take more than a few minutes

We\'ll do a PCB, with proper plated holes, silk, solder mask, all that.

The layout is done!

My contract layout guy suggests sierra circuits or rushpcb or
sunstone. We\'ll get quotes for 30 or so.

if you want to nitpick, you should move one of the wires to the other end
of the board so all the caps have the same trace length and share current

One of my guys started on a PCB layout and another headed for the
Tormach.

Tormach won.

https://www.dropbox.com/s/95qvpqledr9tkuw/P902_Cap_Fix_1.jpg?raw=1

He doesn\'t mind doing 25 this way.


C32... Oops!
Click to expand...

That got inspected by the VOA machine, with a manual followup. It\'s
connected.

So far, every one of these 250-watt class-D amps has worked when we
powered them up.




--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard
 
On Wed, 12 Aug 2020 05:41:25 -0700 (PDT), blocher@columbus.rr.com
wrote:

On Monday, August 10, 2020 at 8:56:49 PM UTC-4, John Larkin wrote:
On Mon, 10 Aug 2020 15:51:19 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 23.35.19 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 14:00:29 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 22.08.33 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 12:49:05 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 21.31.59 UTC+2 skrev John Larkin:
Who is good for really quick-turn double-sided PC boards? 2 or 3 days
delivered.

https://www.dropbox.com/s/t30ggxa5q3z34z5/Cap_Hack.jpg?raw=1

your tormach ?

That\'s an option. The circuit is pretty simple!

yeh, looks like a few holes and an outline, wouldn\'t take more than a few minutes

We\'ll do a PCB, with proper plated holes, silk, solder mask, all that.

The layout is done!

My contract layout guy suggests sierra circuits or rushpcb or
sunstone. We\'ll get quotes for 30 or so.

if you want to nitpick, you should move one of the wires to the other end
of the board so all the caps have the same trace length and share current

One of my guys started on a PCB layout and another headed for the
Tormach.

Tormach won.

https://www.dropbox.com/s/95qvpqledr9tkuw/P902_Cap_Fix_1.jpg?raw=1

He doesn\'t mind doing 25 this way.

On the main board I would solder the wires to C36 and then run the wires on the board to C35 and RTV them down in between C35 & C36
Click to expand...

Or maybe strip the wire long and solder to all the caps. That wire is
#16 but could be 18 or 20.

But what he did would work OK. We don\'t expect vibration.



--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard
 
On 12.8.20 6.34, boB wrote:
On Tue, 11 Aug 2020 14:49:59 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2020-08-11 12:38, jlarkin@highlandsniptechnology.com wrote:


This is our first use of an ST Arm, which we are using now that the
NXP parts seem to be going EOL. I hate when people do that, dump on
their customers.

Which ones are going away? We use a lot of LPC845s and LPC804s, and are
looking at using one of the NXP M4F/M0+ parts.

The ST factory headers are hideous. What toolchain are you folks using
with the ST parts?

Cheers

Phil Hobbs


ST\'s HAL system is hideous for sure.

Their regular old .h file for registers is OK.

I use the HAL only for initialization from their CubeMX tool then it\'s
non-HAL the rest of the way.
Click to expand...

Another vote for this.

The pin mapping is so irregular that a computer tool
is a great help.

--

-TV
 
On 13/8/20 12:56 am, jlarkin@highlandsniptechnology.com wrote:
On Wed, 12 Aug 2020 05:41:25 -0700 (PDT), blocher@columbus.rr.com
wrote:

On Monday, August 10, 2020 at 8:56:49 PM UTC-4, John Larkin wrote:
On Mon, 10 Aug 2020 15:51:19 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 23.35.19 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 14:00:29 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 22.08.33 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 12:49:05 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 21.31.59 UTC+2 skrev John Larkin:
Who is good for really quick-turn double-sided PC boards? 2 or 3 days
delivered.

https://www.dropbox.com/s/t30ggxa5q3z34z5/Cap_Hack.jpg?raw=1

your tormach ?

That\'s an option. The circuit is pretty simple!

yeh, looks like a few holes and an outline, wouldn\'t take more than a few minutes

We\'ll do a PCB, with proper plated holes, silk, solder mask, all that.

The layout is done!

My contract layout guy suggests sierra circuits or rushpcb or
sunstone. We\'ll get quotes for 30 or so.

if you want to nitpick, you should move one of the wires to the other end
of the board so all the caps have the same trace length and share current

One of my guys started on a PCB layout and another headed for the
Tormach.

Tormach won.

https://www.dropbox.com/s/95qvpqledr9tkuw/P902_Cap_Fix_1.jpg?raw=1

He doesn\'t mind doing 25 this way.

On the main board I would solder the wires to C36 and then run the wires on the board to C35 and RTV them down in between C35 & C36

Or maybe strip the wire long and solder to all the caps. That wire is
#16 but could be 18 or 20.

But what he did would work OK. We don\'t expect vibration.
Click to expand...

It\'s probably radiating more than it needs to. Just one full twist in
the wires would shrink that.
 
On Thu, 13 Aug 2020 07:49:55 +1000, Clifford Heath
<no.spam@please.net> wrote:

On 13/8/20 12:56 am, jlarkin@highlandsniptechnology.com wrote:
On Wed, 12 Aug 2020 05:41:25 -0700 (PDT), blocher@columbus.rr.com
wrote:

On Monday, August 10, 2020 at 8:56:49 PM UTC-4, John Larkin wrote:
On Mon, 10 Aug 2020 15:51:19 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 23.35.19 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 14:00:29 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 22.08.33 UTC+2 skrev John Larkin:
On Mon, 10 Aug 2020 12:49:05 -0700 (PDT), Lasse Langwadt Christensen
langwadt@fonz.dk> wrote:

mandag den 10. august 2020 kl. 21.31.59 UTC+2 skrev John Larkin:
Who is good for really quick-turn double-sided PC boards? 2 or 3 days
delivered.

https://www.dropbox.com/s/t30ggxa5q3z34z5/Cap_Hack.jpg?raw=1

your tormach ?

That\'s an option. The circuit is pretty simple!

yeh, looks like a few holes and an outline, wouldn\'t take more than a few minutes

We\'ll do a PCB, with proper plated holes, silk, solder mask, all that.

The layout is done!

My contract layout guy suggests sierra circuits or rushpcb or
sunstone. We\'ll get quotes for 30 or so.

if you want to nitpick, you should move one of the wires to the other end
of the board so all the caps have the same trace length and share current

One of my guys started on a PCB layout and another headed for the
Tormach.

Tormach won.

https://www.dropbox.com/s/95qvpqledr9tkuw/P902_Cap_Fix_1.jpg?raw=1

He doesn\'t mind doing 25 this way.

On the main board I would solder the wires to C36 and then run the wires on the board to C35 and RTV them down in between C35 & C36

Or maybe strip the wire long and solder to all the caps. That wire is
#16 but could be 18 or 20.

But what he did would work OK. We don\'t expect vibration.

It\'s probably radiating more than it needs to. Just one full twist in
the wires would shrink that.
Click to expand...

At 400 Hz in a metal box, radiation is not a concern.

Actually, the load is a chopping shunt regulator that runs around 30
KHz. That\'s going to scream.
 
On Tuesday, August 11, 2020 at 8:34:19 PM UTC-7, boB wrote:
> ST\'s HAL system is hideous for sure.

What\'s hideous about it? STM32 in particular is complicated enough
that most people will not find it economical to roll their own HAL.

I use the HAL only for initialization from their CubeMX tool then it\'s
non-HAL the rest of the way.
Click to expand...

What\'s an example of something that would hose you if you used the
HAL API?

-- john, KE5FX
 
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