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PICList Thread
'[PIC] HX711 routines'
2019\08\19@093032 by Isaac Marino Bavaresco

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Dear All,

I just published some routine to interface with the 24-bit sigma-delta
ADC HX711:

<http://www.piclist.com/Techref/member/IMB-yahoo-J86/HX711.htm>

Cheers,

Isaac


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2019\08\19@110950 by Bob Blick

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Thank you Isaac, I have great respect for your code and this is well commented. I have some HX711 boards and load cells that I was playing with a few years back. This is a good excuse to pull them back up to the surface and finally build a cat feeder that dispenses accurately based on weight.

Friendly regards, Bob

________________________________________
From: spam_OUTpiclist-bouncesTakeThisOuTspammit.edu <.....piclist-bouncesKILLspamspam@spam@mit.edu> on behalf of Isaac Marino Bavaresco Sent: Monday, August 19, 2019 6:27 AM
To: piclistspamKILLspammit.edu
Subject: [PIC] HX711 routines

Dear All,

I just published some routine to interface with the 24-bit sigma-delta
ADC HX711:

<http://www.piclist.com/Techref/member/IMB-yahoo-J86/HX711.htm>

Cheers,

Isaac

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2019\08\19@163824 by Michael Johnston

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Hi all, do you consider writing assembler routines for the PIC16Fxxx parts
out of date? I am trying to learn XC8 and MicroC for this family. I
understand most of the issues when writing code in assembler and Ive so
basic stuff in XC8 which seems to work all right for me!
Thank You
Michael Johnston

On Mon, Aug 19, 2019 at 10:13 AM Bob Blick <.....bobblickKILLspamspam.....outlook.com> wrote:

{Quote hidden}

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2019\08\19@164612 by David Strumpf

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I still write many of my routines for 16x families in assembly and set them up as libraries for the rest of my team to use them.

David Strumpf(573) 268-7870


{Original Message removed}

2019\08\19@170346 by Isaac M. Bavaresco

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Dear Bob,

I'm going to print and frame your message. You brightened my day with your
compliment. It is very important coming from somebody that I respect and
admire so much.

There are two people that I would like to meet in person someday, you and
Russell.

Regarding the comments of the source code, I would like to comment and
document all my code thoroughly but unfortunately the deadlines are always
too close. I think that that's a problem every programmer knows very well.
Most of my code cannot be published due to IP concerns, and of the rest,
only a small part is of enough quality not to get me embarrassed.

Cheers,

Isaac

Em seg, 19 de ago de 2019 12:13, Bob Blick <KILLspambobblickKILLspamspamoutlook.com> escreveu:

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2019\08\19@172616 by Isaac M. Bavaresco

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Dear Michael,

My opinion is that nowadays there is very little need and reasons to
program in assembly. A few small blocks of inline assembly to replace code
that the compiler generates too poorly, OK. One or two small modules
entirely in assembly to implement timing-critical routines like delays, OK
too.

I would not write assembly code to overcome insufficient speed of the MCU.
I simply would choose a more modern and faster part.

Cheers,
Isaac

Em seg, 19 de ago de 2019 17:39, Michael Johnston <
RemoveMEmichaelwjohnston1spamTakeThisOuTgmail.com> escreveu:

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2019\08\19@180449 by James Burkart

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This is excellent! I will use this to sort nerf ammo.

On Mon, Aug 19, 2019, 7:31 AM Isaac Marino Bavaresco <
RemoveMEisaacbavarescoTakeThisOuTspamspamgmail.com> wrote:

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2019\08\20@114609 by AB Pearce - UKRI STFC

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Interesting looking chip.

But what is the tempco like? This blog seems to say it isn't wonderful, for so many bits ...
https://www.eevblog.com/forum/projects/hx711-based-milliohm-meter/
I'm not sure about his testing methods, I suspect much of what he was seeing is due to external component tempco, but it would need some serious experiments to verify.

They also mention an HX712, for which I found a data sheet here ...
https://community.hiveeyes.org/uploads/default/original/1X/35591ec403137b7dc1c70d451b339942f0def3fd.pdf

It also has the B input configured differently so it could be potentially more useful for battery monitoring. I could find chips on eBay (e.g. lots 392325142150 and 392325142150) but no development boards.

I also wonder how they compare to 24 bit converters available from Maxim, Analog Devices (including Linear technology) and Texas Instruments.

The AD7780 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7780.pdf looks like it uses the same basic interface to a micro as the HX711, and I suspect that Isaacs library could be easily adapted to it.





{Original Message removed}

2019\08\20@175057 by Isaac Marino Bavaresco

picon face

Three times I tried to post the message below as a new thread. It seems
that the list doesn't accept original messages from me, just replies.

>> Start of message

[PIC] More code (trying to send third time)

Dear all,

Some more routines, this time for iButton/1-Wire.

I'm really fond of the function 'OneWireSearch', which is reentrant (for
architectures that support reentrancy) and much more elegant than the
Dallas/Maxim reference code and all others that I have seen .

Sorry Bob, comments are sparse.

Link: <http://www.piclist.com/Techref/member/IMB-yahoo-J86/onewire.htm>

Cheers,
Isaac

>> End of message


Em 19/08/2019 18:27, Isaac M. Bavaresco escreveu:
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2019\08\20@180222 by Brent Brown

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Received 3 times. It could be you're just not receiving your own posts? I see the same behaviour, despite PICLIST setting to the contrary.

On 20 Aug 2019 at 18:50, Isaac Marino Bavaresco wrote:

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2019\08\20@180521 by James Cameron

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I've received it three times, so my guess is you are not receiving it,
but others are.

On Tue, Aug 20, 2019 at 06:50:50PM -0300, Isaac Marino Bavaresco wrote:
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2019\08\20@180656 by Denny Esterline

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There is a list setting that prevents you from seeing your own messages.

I have seen all three of your messages.

-Denny

On Tuesday, August 20, 2019, Isaac Marino Bavaresco <
spamBeGoneisaacbavaresco@spam@spamgmail.com> wrote:

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2019\08\20@181214 by Bob Blick

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Hi Isaac,

It's Gmail, refusing to show you your own messages. The originals got through just fine. I don't think there is any setting that you can do to make them show your own messages. Once Gmail decides it's a forum you are posting to, they do this and from then on, that's the way it is.

If I need to know if a message got through I check the archive at piclist.com

Best regards, Bob

________________________________________
From: piclist-bouncesspam_OUTspammit.edu <RemoveMEpiclist-bouncesKILLspamspam@spam@mit.edu> on behalf of Isaac Marino Bavaresco Sent: Tuesday, August 20, 2019 2:50 PM
To: Microcontroller discussion list - Public.
Subject: Re: [PIC] HX711 routines

Three times I tried to post the message below as a new thread. It seems
that the list doesn't accept original messages from me, just replies.

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2019\08\20@184448 by Denny Esterline

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>  I don't think there is any setting that you can do to make them show your
> own messages.
>

It's possible I'm confusing it with another list I was on. My apologies if
so.

-Denny
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2019\08\20@193441 by Bob Blick

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The Piclist does have the setting, but with it set to show your own messages, Gmail will still hide it from you. It doesn't seem to do it at first, which is perplexing.

Cheerful regards, Bob

________________________________________
From: piclist-bouncesspamBeGonespam.....mit.edu <KILLspampiclist-bouncesspam.....mit.edu> on behalf of Denny Esterline Sent: Tuesday, August 20, 2019 3:44 PM
To: Microcontroller discussion list - Public.
Subject: Re: [PIC] HX711 routines

>  I don't think there is any setting that you can do to make them show your
> own messages.
>

It's possible I'm confusing it with another list I was on. My apologies if
so.

-Denny
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2019\08\20@204129 by Brent Brown

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Interesting. Likewise I consistently don't see my own messages to Piclist, Piclist setting says I should. I am using Gmail as my provider, though I mostly don't use their client software or web interfaces (until something goes missing).

Looking into it further: I have found that my emails to PIC list do appear in a Gmail "All Mail" folder, and not the "Inbox"... could explain why POP isn't retrieving them. A little bizarre they would filter and move items without that being configurable.

Gmail does do some other things the way they want, ignoring norms/conventions... e.g. ignores/disobeys POP client request to "leave mail on server"... instead leaves or deletes mail on server according to a per user setting.

Bob Blick wrote:
> The Piclist does have the setting, but with it set to show your own
> messages, Gmail will still hide it from you. It doesn't seem to do
> it at first, which is perplexing.
Denny Esterline wrote:
> >  I don't think there is any setting that you can do to make them show your
> > own messages.


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'[PIC] HX711 routines'
2019\09\03@022643 by RussellMc
face picon face
On Tue, 20 Aug 2019 at 09:06, Isaac M. Bavaresco <spam_OUTisaacbavarescospamKILLspamgmail.com>
wrote:


> There are two people that I would like to meet in person someday, you and
> Russell.
>
>
Thanks   :-)

Both at the same time could be fun.
Maybe add Olin Lathrop and James Newton  as well and make a real party of
it :-).

Of that group I've only met James - in the US in 2003.



   Russell

>
>
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