Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Bo Hansen]

Hi list

Here is an Arduino way to control AD9833, AD9850, AD9851, AD9912 and AD9913



Alternatively using an Atmega128A to control an AD9912:



Bo



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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Clint Jay]

Seconded on the Andy Talbot suggestion, iirc he has almost exactly what you
need

On 14 Dec 2017 17:19, "Dave B via time-nuts"  wrote:

> Take a look at Andy Talbot's page at...
>
> http://www.g4jnt.com/Synthesizers.htm
>
> Lots of good options there for that sort of thing.
>
> 73.
>
> Dave G0WBX.
>
>
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Dave B via time-nuts]

Take a look at Andy Talbot's page at...

http://www.g4jnt.com/Synthesizers.htm

Lots of good options there for that sort of thing.

73.

Dave G0WBX.


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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Alberto di Bene]

The problem with the 9854 DDS is that the analog reconstruction filters that you have to place after its outputs, are 
not guaranteed to have
*exactly* the same phase behavior  between the two sections (I and Q). This may or may not be important, depending on 
the application.


For sure, for an SDR, even small discrepancies between the two phases, let's say 0.1 degree, can lead to a non complete 
cancellation of

the unwanted sideband, when you implement a zero IF SDR radio.

73  Alberto  I2PHD
==

On 12/14/2017 5:15 PM, Jerry Hancock wrote:

I have those 9954/9854 boards and the problem is the drivers for newer 
operating systems past XP aren’t available.  The AD9854/9954 boards were clones 
of the AD eval kits and you downloaded the eval kit software from AD.  I got 
the board(s) working with Windows 7 but it took a lot of screwing around.   I 
never got it working with Windows 10.  The other issue with those boards are 
the filters were set really high.  All DDS units need a filter on the output 
though I’m sure the term “all” can be debated.

If you have a need to generate a quadrature signal and have access to Windows 
7, or better yet, XPSP3, then yes, it is a decent option and seemed to work 
well.  The filters can be handled off-board, especially if you just need 10Mhz 
as BG7TBL has decent 10Mhz filters for $10 per.  I bought a couple and hung 
them on my RFTG-U REF0 and REF1 outputs and they make a really nice 10Mhz sine 
wave.


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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Jerry Hancock]

I have those 9954/9854 boards and the problem is the drivers for newer 
operating systems past XP aren’t available.  The AD9854/9954 boards were clones 
of the AD eval kits and you downloaded the eval kit software from AD.  I got 
the board(s) working with Windows 7 but it took a lot of screwing around.   I 
never got it working with Windows 10.  The other issue with those boards are 
the filters were set really high.  All DDS units need a filter on the output 
though I’m sure the term “all” can be debated.

If you have a need to generate a quadrature signal and have access to Windows 
7, or better yet, XPSP3, then yes, it is a decent option and seemed to work 
well.  The filters can be handled off-board, especially if you just need 10Mhz 
as BG7TBL has decent 10Mhz filters for $10 per.  I bought a couple and hung 
them on my RFTG-U REF0 and REF1 outputs and they make a really nice 10Mhz sine 
wave.

Jerry 



> On Dec 14, 2017, at 3:49 AM, ew via time-nuts  wrote:
> 
> Rick
> Please contact me off list we did a board for Corby to be used with the HP Rb 
> using a PIC but I would have to better understand your needs to figure out 
> what board to use.
> Bert Kehren
>  
> In a message dated 12/13/2017 4:06:01 PM Eastern Standard Time, 
> artgod...@gmail.com writes:
> 
>  
> It's a bit bizarre that it uses Basic. I just remember my local ARC using
> it as a project sometime ago. Possibly in the 20th century. :)
> 
> 
> On Wed, Dec 13, 2017 at 9:03 PM, Richard (Rick) Karlquist <
> rich...@karlquist.com> wrote:
> 
>> This looks like a very good starting point. It's a superset
>> that I can just simplify.
>> 
>> Rick
>> 
>> 
>> On 12/13/2017 12:10 PM, Adrian Godwin wrote:
>> 
>>> Maybe this one ?
>>> 
>>> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
>>> 
>>> There are probably many others
>>> 
>>> 
>>> On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
>>> rich...@karlquist.com> wrote:
>>> 
>>> I need a very simple controller to tune a DDS with up/down
 switches (imagine setting the time on a clock). A DDS
 chip, such as an AD9836 would go on a PC board and a couple
 of pushbuttons would tell the controller to tune up or
 down.
 
 Before reinventing this wheel, I thought I would see if
 anyone knows of a similar solution that can be leveraged.
 What I would like is both hardware and software, where
 the software could be edited to accommodate the up/down
 buttons. A last resort would be to write software from
 scratch. My software skills are extremely limited.
 Cutting and pasting code might work for me.
 
 I need to be able to embed this onto an existing PC board.
 I can't use a preexisting "daughter" card, other than
 to copy the design of the card.
 
 Rick Karlquist
 N6RK
 
 
 
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[John Reid]

Bascom is a Basic compiler, for AVR chips if my memory serves right.






> On Dec 13, 2017, at 12:10 PM, Adrian Godwin  wrote:
>
> Maybe this one ?
>
> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[ew via time-nuts]

Rick
Please contact me off list we did a board for Corby to be used with the HP Rb 
using a PIC but I would have to better understand your needs to figure out what 
board to use.
Bert Kehren
 
In a message dated 12/13/2017 4:06:01 PM Eastern Standard Time, 
artgod...@gmail.com writes:

 
 It's a bit bizarre that it uses Basic. I just remember my local ARC using
it as a project sometime ago. Possibly in the 20th century. :)


On Wed, Dec 13, 2017 at 9:03 PM, Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:

> This looks like a very good starting point. It's a superset
> that I can just simplify.
>
> Rick
>
>
> On 12/13/2017 12:10 PM, Adrian Godwin wrote:
>
>> Maybe this one ?
>>
>> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
>>
>> There are probably many others
>>
>>
>> On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
>> rich...@karlquist.com> wrote:
>>
>> I need a very simple controller to tune a DDS with up/down
>>> switches (imagine setting the time on a clock). A DDS
>>> chip, such as an AD9836 would go on a PC board and a couple
>>> of pushbuttons would tell the controller to tune up or
>>> down.
>>>
>>> Before reinventing this wheel, I thought I would see if
>>> anyone knows of a similar solution that can be leveraged.
>>> What I would like is both hardware and software, where
>>> the software could be edited to accommodate the up/down
>>> buttons. A last resort would be to write software from
>>> scratch. My software skills are extremely limited.
>>> Cutting and pasting code might work for me.
>>>
>>> I need to be able to embed this onto an existing PC board.
>>> I can't use a preexisting "daughter" card, other than
>>> to copy the design of the card.
>>>
>>> Rick Karlquist
>>> N6RK
>>>
>>>
>>>
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>>> time-nuts mailing list -- time-nuts@febo.com
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>>> ailman/listinfo/time-nuts
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>>
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Bob Darby]

Rick,

It might be an adventure but ebay - doukstore  has a AD9959 Radio Frequency RF 
Signal Source Generator 4-Channel DDS Module DC5V for 50.99 and a DDS Module 
Driver Board LCD for AD9854 / AD9954 / AD9833 / AD9834 / AD9851 control board 
at 27.99 with push buttons and a LCD screen to set the outputs.  They also have 
a number of other DDS modules.

I have no idea what the quality is and I doubt there are English manuals or any 
schematics but for 78 bucks delivered it might suit.  

Bob Darby

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Richard (Rick) 
Karlquist
Sent: Wednesday, December 13, 2017 3:03 PM
To: Discussion of precise time and frequency measurement <time-nuts@febo.com>
Subject: [time-nuts] Simple open source microcontroller solution to tune DDS 
needed

I need a very simple controller to tune a DDS with up/down switches (imagine 
setting the time on a clock).  A DDS chip, such as an AD9836 would go on a PC 
board and a couple of pushbuttons would tell the controller to tune up or down.

Before reinventing this wheel, I thought I would see if anyone knows of a 
similar solution that can be leveraged.
What I would like is both hardware and software, where the software could be 
edited to accommodate the up/down buttons.  A last resort would be to write 
software from scratch.  My software skills are extremely limited.
Cutting and pasting code might work for me.

I need to be able to embed this onto an existing PC board.
I can't use a preexisting "daughter" card, other than to copy the design of the 
card.

Rick Karlquist
N6RK



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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Robert LaJeunesse]

For quite some time (most of the last 10 years) Elektor magazine promoted 
BASCOM-AVR as an easy to use development language for the AVR micro. They have 
multiple books teaching BASCOM-AVR and a few hardware kits to go along. 
BASCOM-AVR is still available at 
https://www.mcselec.com/index.php?option=com_phpshop=shop.browse_id=5=1

> Sent: Wednesday, December 13, 2017 at 6:22 PM
> From: "Hal Murray" <hmur...@megapathdsl.net>
> To: "Discussion of precise time and frequency measurement" 
> <time-nuts@febo.com>
> Cc: hmur...@megapathdsl.net
> Subject: Re: [time-nuts] Simple open source microcontroller solution to tune 
> DDS needed
>
> > ... is in bascom, whatever that is.
> 
> I had to look it up.
> 
> https://en.wikipedia.org/wiki/MBASIC#BASCOM
> 
> > Microsoft sold a CP/M BASIC compiler (known as BASCOM)
> > which used a similar source language to MBASIC.
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[time-nuts] Simple open source microcontroller solution to tune DDS needed

[Mark Sims]

The Arduino is basically just a processor chip on a breakout board that has 
some connectors, crystal, voltage regulator, USB interface.   The standard 
processor is an Atmel ATMEGA328.   The Arduino Nano is a shrunk down version 
that can be treated as a DIP packaged processor.  You can also buy bare 
ATMega328 chips with the Arduino bootloader pre-programmed.
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Hal Murray]

> ... is in bascom, whatever that is.

I had to look it up.

https://en.wikipedia.org/wiki/MBASIC#BASCOM

> Microsoft sold a CP/M BASIC compiler (known as BASCOM)
> which used a similar source language to MBASIC.


> Developers welcomed BASCOM as an alternative to the popular but slow and
> clumsy CBASIC. Unlike CBASIC, BASCOM did not need a preprocessor for MBASIC
> source code so could be debugged interactively.[2] A disadvantage was
> Microsoft's requirement of a 9% royalty for each compiled copy of a
> program[3] and $40 for hardware-software combinations.

???




-- 
These are my opinions.  I hate spam.



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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Tim Shoppa]

ESP8266 is my favorite as of late. It comes in a "DIP Form Factor" and does
SPI and random DIO very nicely.

Even better, as to user interface, it has Wi-Fi and instead of physical
buttons, the UI can be as simple as buttons on a web page it serves up.

Tim N3QE

On Wed, Dec 13, 2017 at 3:03 PM, Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:

> I need a very simple controller to tune a DDS with up/down
> switches (imagine setting the time on a clock).  A DDS
> chip, such as an AD9836 would go on a PC board and a couple
> of pushbuttons would tell the controller to tune up or
> down.
>
> Before reinventing this wheel, I thought I would see if
> anyone knows of a similar solution that can be leveraged.
> What I would like is both hardware and software, where
> the software could be edited to accommodate the up/down
> buttons.  A last resort would be to write software from
> scratch.  My software skills are extremely limited.
> Cutting and pasting code might work for me.
>
> I need to be able to embed this onto an existing PC board.
> I can't use a preexisting "daughter" card, other than
> to copy the design of the card.
>
> Rick Karlquist
> N6RK
>
>
>
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Bob Bownes]

The digispark and digispark pro are also some nice <$15 development boards
that are USB programmable, use the Arduino IDE or AVR compiler, and have
just enough pins to be useful.

On Wed, Dec 13, 2017 at 4:34 PM, jimlux  wrote:

> On 12/13/17 1:28 PM, Jerry Hancock wrote:
>
>> Well, if you haven’t selected a DDS and you need I/Q, I would go with the
>> tried and true 9854 as it has I/Q outputs and I thought a 12bit DAC so the
>> resulting spurs and sfdr are lower than other chips, or were, as I think
>> they have 14bit DACs on other chips now.  It also depends on the highest
>> frequency range needed and power requirements as they all seem to run hot.
>> There is a new DDS, a 9910 I think, that uses a 14bit DAC but it is a
>> single output and would need to sync clocks if you need I/Q.  I have used
>> the 9854 with PIC, Arduino and STM32 and assuming the frequency range is
>> ok, I found it to be the better of the chips.  I don’t think they have a
>> replacement for it (I/Q with 14bit DAC would be great) but I haven’t looked
>> lately.
>>
>> The language is C but I think it has C++ and C# compilers out there.
>> Also, once you have the code tested on the Arduino you can just run it on
>> the equivalent AVR chip and build your own board.  I don’t think there is a
>> license or runtime compiler issue and if there is, I remember seeing a GNU
>> compiler for the AVRs and Arduino.  My only point is that for prototyping
>> and testing, the Arduino seems to be the easiest with tons of support and
>> many, many adapters and I/O,  The STM32 boards are faster but the learning
>> curve is just unbelievable.  It took me months to master those boards
>> compared to minutes for the Arduino.
>>
>>
>
> I agree - $20 for a Teensy, some jumper wires from solder holes on the
> Teensy to your breadboard, load up the Teensyduino libraries into the
> Arduino IDE and your SPI/I2C/serial interface is done.  I did this to write
> arduino code to drive a Silabs part.
>
> If it takes an hour, I'd be surprised (or you have an incredibly slow
> download connection, like doing it on an airplane in the back rows where
> the WiFi is clunky - which I have done).  The hard part when going to a
> standalone design is picking the right pins on the microcontroller (since
> so many have multiple functions, you want to be careful about accidentally
> using something that has another useful function).
>
>
>
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[jimlux]

On 12/13/17 1:28 PM, Jerry Hancock wrote:

Well, if you haven’t selected a DDS and you need I/Q, I would go with the tried 
and true 9854 as it has I/Q outputs and I thought a 12bit DAC so the resulting 
spurs and sfdr are lower than other chips, or were, as I think they have 14bit 
DACs on other chips now.  It also depends on the highest frequency range needed 
and power requirements as they all seem to run hot.  There is a new DDS, a 9910 
I think, that uses a 14bit DAC but it is a single output and would need to sync 
clocks if you need I/Q.  I have used the 9854 with PIC, Arduino and STM32 and 
assuming the frequency range is ok, I found it to be the better of the chips.  
I don’t think they have a replacement for it (I/Q with 14bit DAC would be 
great) but I haven’t looked lately.

The language is C but I think it has C++ and C# compilers out there.  Also, 
once you have the code tested on the Arduino you can just run it on the 
equivalent AVR chip and build your own board.  I don’t think there is a license 
or runtime compiler issue and if there is, I remember seeing a GNU compiler for 
the AVRs and Arduino.  My only point is that for prototyping and testing, the 
Arduino seems to be the easiest with tons of support and many, many adapters 
and I/O,  The STM32 boards are faster but the learning curve is just 
unbelievable.  It took me months to master those boards compared to minutes for 
the Arduino.




I agree - $20 for a Teensy, some jumper wires from solder holes on the 
Teensy to your breadboard, load up the Teensyduino libraries into the 
Arduino IDE and your SPI/I2C/serial interface is done.  I did this to 
write arduino code to drive a Silabs part.


If it takes an hour, I'd be surprised (or you have an incredibly slow 
download connection, like doing it on an airplane in the back rows where 
the WiFi is clunky - which I have done).  The hard part when going to a 
standalone design is picking the right pins on the microcontroller 
(since so many have multiple functions, you want to be careful about 
accidentally using something that has another useful function).



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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Jerry Hancock]

Well, if you haven’t selected a DDS and you need I/Q, I would go with the tried 
and true 9854 as it has I/Q outputs and I thought a 12bit DAC so the resulting 
spurs and sfdr are lower than other chips, or were, as I think they have 14bit 
DACs on other chips now.  It also depends on the highest frequency range needed 
and power requirements as they all seem to run hot.  There is a new DDS, a 9910 
I think, that uses a 14bit DAC but it is a single output and would need to sync 
clocks if you need I/Q.  I have used the 9854 with PIC, Arduino and STM32 and 
assuming the frequency range is ok, I found it to be the better of the chips.  
I don’t think they have a replacement for it (I/Q with 14bit DAC would be 
great) but I haven’t looked lately.

The language is C but I think it has C++ and C# compilers out there.  Also, 
once you have the code tested on the Arduino you can just run it on the 
equivalent AVR chip and build your own board.  I don’t think there is a license 
or runtime compiler issue and if there is, I remember seeing a GNU compiler for 
the AVRs and Arduino.  My only point is that for prototyping and testing, the 
Arduino seems to be the easiest with tons of support and many, many adapters 
and I/O,  The STM32 boards are faster but the learning curve is just 
unbelievable.  It took me months to master those boards compared to minutes for 
the Arduino.

Jerry
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[jimlux]

On 12/13/17 12:56 PM, Richard (Rick) Karlquist wrote:

I should have said AD9832.  But that was just an example
that would work.  I may choose a different one for whatever
reason.

Regarding the Arduino board:  that is what I would call
a "daughter" board, which I can't have.  Is the Arduino
board open source, so that I can just copy the schematic
of it to my own board?  Is the Arduino software also
open source?



yes to both.

There's also a fair amount of "non arduino" software that runs on the 
arduino hardware platform (whether ATMEGA or Freescale or some other ARM 
processor).


The pjrc.com teensy is available with pins sticking out, so you can 
mount it like a sort of thicker than normal wide DIP.


I've built standalone designs inheriting the processor schematic from 
the pjrc.com Teensy series (which use the Freescale parts which have a 
built in USB interface, useful for me).


If you're used to cross compilers using the usual GCC toolsets, and 
such, then you don't need the Arduino IDE environment (although it *is* 
easy, and gives you a nice prototyping platform).  You can program most 
of these chips using the JTAG interface, assuming you have a JTAG pod of 
some sort.  That gives you a single chip solution that still has a 
fairly clean development environment.









Rick

On 12/13/2017 12:47 PM, Clint Jay wrote:

I think maybe you might have meant the AD9835 ?

Anyway, there are plenty of code examples out there, do you have a
processor in mind or are you free to use whatever is suggested?



On 13 Dec 2017 20:03, "Richard (Rick) Karlquist" 
wrote:


I need a very simple controller to tune a DDS with up/down
switches (imagine setting the time on a clock).  A DDS
chip, such as an AD9836 would go on a PC board and a couple
of pushbuttons would tell the controller to tune up or
down.

Before reinventing this wheel, I thought I would see if
anyone knows of a similar solution that can be leveraged.
What I would like is both hardware and software, where
the software could be edited to accommodate the up/down
buttons.  A last resort would be to write software from
scratch.  My software skills are extremely limited.
Cutting and pasting code might work for me.

I need to be able to embed this onto an existing PC board.
I can't use a preexisting "daughter" card, other than
to copy the design of the card.

Rick Karlquist
N6RK



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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Adrian Godwin]

Arduino is, of course (or actually some slightly weird dialect of C++).
But the pa3ckr code at
http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/ad9951-12.bas is in
bascom, whatever that is.

On Wed, Dec 13, 2017 at 9:12 PM, paul swed  wrote:

> Must have missed something here. Basic? Arduino uses C behaviors. God knows
> everythings been written for it so maybe there is a basic language. That
> said schematics are readily available and I believe its all open source.
> Thats why its been so popular. Lots of nice simple tools for it also.
> Regards
> Paul
> WB8TSL
>
> On Wed, Dec 13, 2017 at 4:05 PM, Adrian Godwin 
> wrote:
>
> > It's a bit bizarre that it uses Basic. I just remember my local ARC using
> > it as a project sometime ago. Possibly in the 20th century. :)
> >
> >
> > On Wed, Dec 13, 2017 at 9:03 PM, Richard (Rick) Karlquist <
> > rich...@karlquist.com> wrote:
> >
> > > This looks like a very good starting point.  It's a superset
> > > that I can just simplify.
> > >
> > > Rick
> > >
> > >
> > > On 12/13/2017 12:10 PM, Adrian Godwin wrote:
> > >
> > >> Maybe this one ?
> > >>
> > >> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
> > >>
> > >> There are probably many others
> > >>
> > >>
> > >> On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
> > >> rich...@karlquist.com> wrote:
> > >>
> > >> I need a very simple controller to tune a DDS with up/down
> > >>> switches (imagine setting the time on a clock).  A DDS
> > >>> chip, such as an AD9836 would go on a PC board and a couple
> > >>> of pushbuttons would tell the controller to tune up or
> > >>> down.
> > >>>
> > >>> Before reinventing this wheel, I thought I would see if
> > >>> anyone knows of a similar solution that can be leveraged.
> > >>> What I would like is both hardware and software, where
> > >>> the software could be edited to accommodate the up/down
> > >>> buttons.  A last resort would be to write software from
> > >>> scratch.  My software skills are extremely limited.
> > >>> Cutting and pasting code might work for me.
> > >>>
> > >>> I need to be able to embed this onto an existing PC board.
> > >>> I can't use a preexisting "daughter" card, other than
> > >>> to copy the design of the card.
> > >>>
> > >>> Rick Karlquist
> > >>> N6RK
> > >>>
> > >>>
> > >>>
> > >>> ___
> > >>> time-nuts mailing list -- time-nuts@febo.com
> > >>> To unsubscribe, go to https://www.febo.com/cgi-bin/m
> > >>> ailman/listinfo/time-nuts
> > >>> and follow the instructions there.
> > >>>
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[paul swed]

Must have missed something here. Basic? Arduino uses C behaviors. God knows
everythings been written for it so maybe there is a basic language. That
said schematics are readily available and I believe its all open source.
Thats why its been so popular. Lots of nice simple tools for it also.
Regards
Paul
WB8TSL

On Wed, Dec 13, 2017 at 4:05 PM, Adrian Godwin  wrote:

> It's a bit bizarre that it uses Basic. I just remember my local ARC using
> it as a project sometime ago. Possibly in the 20th century. :)
>
>
> On Wed, Dec 13, 2017 at 9:03 PM, Richard (Rick) Karlquist <
> rich...@karlquist.com> wrote:
>
> > This looks like a very good starting point.  It's a superset
> > that I can just simplify.
> >
> > Rick
> >
> >
> > On 12/13/2017 12:10 PM, Adrian Godwin wrote:
> >
> >> Maybe this one ?
> >>
> >> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
> >>
> >> There are probably many others
> >>
> >>
> >> On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
> >> rich...@karlquist.com> wrote:
> >>
> >> I need a very simple controller to tune a DDS with up/down
> >>> switches (imagine setting the time on a clock).  A DDS
> >>> chip, such as an AD9836 would go on a PC board and a couple
> >>> of pushbuttons would tell the controller to tune up or
> >>> down.
> >>>
> >>> Before reinventing this wheel, I thought I would see if
> >>> anyone knows of a similar solution that can be leveraged.
> >>> What I would like is both hardware and software, where
> >>> the software could be edited to accommodate the up/down
> >>> buttons.  A last resort would be to write software from
> >>> scratch.  My software skills are extremely limited.
> >>> Cutting and pasting code might work for me.
> >>>
> >>> I need to be able to embed this onto an existing PC board.
> >>> I can't use a preexisting "daughter" card, other than
> >>> to copy the design of the card.
> >>>
> >>> Rick Karlquist
> >>> N6RK
> >>>
> >>>
> >>>
> >>> ___
> >>> time-nuts mailing list -- time-nuts@febo.com
> >>> To unsubscribe, go to https://www.febo.com/cgi-bin/m
> >>> ailman/listinfo/time-nuts
> >>> and follow the instructions there.
> >>>
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> >>
> >>
> >>
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Adrian Godwin]

It's a bit bizarre that it uses Basic. I just remember my local ARC using
it as a project sometime ago. Possibly in the 20th century. :)


On Wed, Dec 13, 2017 at 9:03 PM, Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:

> This looks like a very good starting point.  It's a superset
> that I can just simplify.
>
> Rick
>
>
> On 12/13/2017 12:10 PM, Adrian Godwin wrote:
>
>> Maybe this one ?
>>
>> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
>>
>> There are probably many others
>>
>>
>> On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
>> rich...@karlquist.com> wrote:
>>
>> I need a very simple controller to tune a DDS with up/down
>>> switches (imagine setting the time on a clock).  A DDS
>>> chip, such as an AD9836 would go on a PC board and a couple
>>> of pushbuttons would tell the controller to tune up or
>>> down.
>>>
>>> Before reinventing this wheel, I thought I would see if
>>> anyone knows of a similar solution that can be leveraged.
>>> What I would like is both hardware and software, where
>>> the software could be edited to accommodate the up/down
>>> buttons.  A last resort would be to write software from
>>> scratch.  My software skills are extremely limited.
>>> Cutting and pasting code might work for me.
>>>
>>> I need to be able to embed this onto an existing PC board.
>>> I can't use a preexisting "daughter" card, other than
>>> to copy the design of the card.
>>>
>>> Rick Karlquist
>>> N6RK
>>>
>>>
>>>
>>> ___
>>> time-nuts mailing list -- time-nuts@febo.com
>>> To unsubscribe, go to https://www.febo.com/cgi-bin/m
>>> ailman/listinfo/time-nuts
>>> and follow the instructions there.
>>>
>>> ___
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Richard (Rick) Karlquist]

This looks like a very good starting point.  It's a superset
that I can just simplify.

Rick

On 12/13/2017 12:10 PM, Adrian Godwin wrote:

Maybe this one ?

http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html

There are probably many others


On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:


I need a very simple controller to tune a DDS with up/down
switches (imagine setting the time on a clock).  A DDS
chip, such as an AD9836 would go on a PC board and a couple
of pushbuttons would tell the controller to tune up or
down.

Before reinventing this wheel, I thought I would see if
anyone knows of a similar solution that can be leveraged.
What I would like is both hardware and software, where
the software could be edited to accommodate the up/down
buttons.  A last resort would be to write software from
scratch.  My software skills are extremely limited.
Cutting and pasting code might work for me.

I need to be able to embed this onto an existing PC board.
I can't use a preexisting "daughter" card, other than
to copy the design of the card.

Rick Karlquist
N6RK



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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Richard (Rick) Karlquist]

I should have said AD9832.  But that was just an example
that would work.  I may choose a different one for whatever
reason.

Regarding the Arduino board:  that is what I would call
a "daughter" board, which I can't have.  Is the Arduino
board open source, so that I can just copy the schematic
of it to my own board?  Is the Arduino software also
open source?

Rick

On 12/13/2017 12:47 PM, Clint Jay wrote:

I think maybe you might have meant the AD9835 ?

Anyway, there are plenty of code examples out there, do you have a
processor in mind or are you free to use whatever is suggested?



On 13 Dec 2017 20:03, "Richard (Rick) Karlquist" 
wrote:


I need a very simple controller to tune a DDS with up/down
switches (imagine setting the time on a clock).  A DDS
chip, such as an AD9836 would go on a PC board and a couple
of pushbuttons would tell the controller to tune up or
down.

Before reinventing this wheel, I thought I would see if
anyone knows of a similar solution that can be leveraged.
What I would like is both hardware and software, where
the software could be edited to accommodate the up/down
buttons.  A last resort would be to write software from
scratch.  My software skills are extremely limited.
Cutting and pasting code might work for me.

I need to be able to embed this onto an existing PC board.
I can't use a preexisting "daughter" card, other than
to copy the design of the card.

Rick Karlquist
N6RK



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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[paul swed]

bob
I also had trouble and assumed it was the AD9835.
That said I was curious. The DDS boards are always on ebay with mounted
chips and clock for $10.
Yes sir they are plenty to choose from still. I go along with Jerry's
comment on the arduino. Plent of code snips for control and DDS chips.
Additional note. The Arduino has SPi libraries and such to make 3 wire
control interfaces for numbers of things like the everset clock chip.
I have used these and I am by no means a great programmer.
Regards
Paul
WB8TSL

On Wed, Dec 13, 2017 at 3:30 PM, Bob kb8tq  wrote:

> Hi
>
> I’m having a little trouble spotting the 9836 in AD’s current lineup of
> DDS chips. The
> stuff below is thus a bit generic.
>
> My guess is that you will have a hard time finding a canned solution.
> There are a
> bunch of registers on your typical DDS part. The what to stuff where tends
> to be pretty
> application specific (output frequency, clock frequency, amplitudes, modes
> ….). It’s not
> rocket science, but it also will vary quite a bit from application to
> application.
>
> By far the most common “easy to use” programming environment is the
> Arduino. You
> still will be pretty deep into this and that to get anything done. A
> simple PIC done in
> assembler would be the lowest parts count approach. That’s not exactly a
> simple thing
> to learn just for a project like this.
>
> Bob
>
> > On Dec 13, 2017, at 3:03 PM, Richard (Rick) Karlquist <
> rich...@karlquist.com> wrote:
> >
> > I need a very simple controller to tune a DDS with up/down
> > switches (imagine setting the time on a clock).  A DDS
> > chip, such as an AD9836 would go on a PC board and a couple
> > of pushbuttons would tell the controller to tune up or
> > down.
> >
> > Before reinventing this wheel, I thought I would see if
> > anyone knows of a similar solution that can be leveraged.
> > What I would like is both hardware and software, where
> > the software could be edited to accommodate the up/down
> > buttons.  A last resort would be to write software from
> > scratch.  My software skills are extremely limited.
> > Cutting and pasting code might work for me.
> >
> > I need to be able to embed this onto an existing PC board.
> > I can't use a preexisting "daughter" card, other than
> > to copy the design of the card.
> >
> > Rick Karlquist
> > N6RK
> >
> >
> >
> > ___
> > time-nuts mailing list -- time-nuts@febo.com
> > To unsubscribe, go to https://www.febo.com/cgi-bin/
> mailman/listinfo/time-nuts
> > and follow the instructions there.
>
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Clint Jay]

I think maybe you might have meant the AD9835 ?

Anyway, there are plenty of code examples out there, do you have a
processor in mind or are you free to use whatever is suggested?



On 13 Dec 2017 20:03, "Richard (Rick) Karlquist" 
wrote:

> I need a very simple controller to tune a DDS with up/down
> switches (imagine setting the time on a clock).  A DDS
> chip, such as an AD9836 would go on a PC board and a couple
> of pushbuttons would tell the controller to tune up or
> down.
>
> Before reinventing this wheel, I thought I would see if
> anyone knows of a similar solution that can be leveraged.
> What I would like is both hardware and software, where
> the software could be edited to accommodate the up/down
> buttons.  A last resort would be to write software from
> scratch.  My software skills are extremely limited.
> Cutting and pasting code might work for me.
>
> I need to be able to embed this onto an existing PC board.
> I can't use a preexisting "daughter" card, other than
> to copy the design of the card.
>
> Rick Karlquist
> N6RK
>
>
>
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Bob kb8tq]

Hi

I’m having a little trouble spotting the 9836 in AD’s current lineup of DDS 
chips. The
stuff below is thus a bit generic. 

My guess is that you will have a hard time finding a canned solution. There are 
a
bunch of registers on your typical DDS part. The what to stuff where tends to 
be pretty
application specific (output frequency, clock frequency, amplitudes, modes ….). 
It’s not
rocket science, but it also will vary quite a bit from application to 
application. 

By far the most common “easy to use” programming environment is the Arduino. 
You 
still will be pretty deep into this and that to get anything done. A simple PIC 
done in
assembler would be the lowest parts count approach. That’s not exactly a simple 
thing
to learn just for a project like this. 

Bob

> On Dec 13, 2017, at 3:03 PM, Richard (Rick) Karlquist  
> wrote:
> 
> I need a very simple controller to tune a DDS with up/down
> switches (imagine setting the time on a clock).  A DDS
> chip, such as an AD9836 would go on a PC board and a couple
> of pushbuttons would tell the controller to tune up or
> down.
> 
> Before reinventing this wheel, I thought I would see if
> anyone knows of a similar solution that can be leveraged.
> What I would like is both hardware and software, where
> the software could be edited to accommodate the up/down
> buttons.  A last resort would be to write software from
> scratch.  My software skills are extremely limited.
> Cutting and pasting code might work for me.
> 
> I need to be able to embed this onto an existing PC board.
> I can't use a preexisting "daughter" card, other than
> to copy the design of the card.
> 
> Rick Karlquist
> N6RK
> 
> 
> 
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Jerry Hancock]

I was using PIC chips to talk to AD9854 and 9851 and switched to the low cost 
Arduino boards as they are so much easier to program and have so much 
accessible I/O and adapter boards.  I know there is a lot of code out there for 
AD chips as it could be a little tricky to clock the bits out to the various 
registers.  The nice thing about the Arduino boards is that they have built in 
serial so whatever you write can be easily converted to USB control for both 
error logging and setting of parameters.  There are ethernet shields, wireless, 
etc.  There are a lot of AD9854 codes out there that can probably be used as a 
foundation for the AD9836.


> On Dec 13, 2017, at 12:10 PM, Adrian Godwin  wrote:
> 
> Maybe this one ?
> 
> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
> 
> There are probably many others
> 
> 
> On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
> rich...@karlquist.com> wrote:
> 
>> I need a very simple controller to tune a DDS with up/down
>> switches (imagine setting the time on a clock).  A DDS
>> chip, such as an AD9836 would go on a PC board and a couple
>> of pushbuttons would tell the controller to tune up or
>> down.
>> 
>> Before reinventing this wheel, I thought I would see if
>> anyone knows of a similar solution that can be leveraged.
>> What I would like is both hardware and software, where
>> the software could be edited to accommodate the up/down
>> buttons.  A last resort would be to write software from
>> scratch.  My software skills are extremely limited.
>> Cutting and pasting code might work for me.
>> 
>> I need to be able to embed this onto an existing PC board.
>> I can't use a preexisting "daughter" card, other than
>> to copy the design of the card.
>> 
>> Rick Karlquist
>> N6RK
>> 
>> 
>> 
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>> 
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Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

[Adrian Godwin]

Maybe this one ?

http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html

There are probably many others


On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:

> I need a very simple controller to tune a DDS with up/down
> switches (imagine setting the time on a clock).  A DDS
> chip, such as an AD9836 would go on a PC board and a couple
> of pushbuttons would tell the controller to tune up or
> down.
>
> Before reinventing this wheel, I thought I would see if
> anyone knows of a similar solution that can be leveraged.
> What I would like is both hardware and software, where
> the software could be edited to accommodate the up/down
> buttons.  A last resort would be to write software from
> scratch.  My software skills are extremely limited.
> Cutting and pasting code might work for me.
>
> I need to be able to embed this onto an existing PC board.
> I can't use a preexisting "daughter" card, other than
> to copy the design of the card.
>
> Rick Karlquist
> N6RK
>
>
>
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> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/m
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[time-nuts] Simple open source microcontroller solution to tune DDS needed

[Richard (Rick) Karlquist]

I need a very simple controller to tune a DDS with up/down
switches (imagine setting the time on a clock).  A DDS
chip, such as an AD9836 would go on a PC board and a couple
of pushbuttons would tell the controller to tune up or
down.

Before reinventing this wheel, I thought I would see if
anyone knows of a similar solution that can be leveraged.
What I would like is both hardware and software, where
the software could be edited to accommodate the up/down
buttons.  A last resort would be to write software from
scratch.  My software skills are extremely limited.
Cutting and pasting code might work for me.

I need to be able to embed this onto an existing PC board.
I can't use a preexisting "daughter" card, other than
to copy the design of the card.

Rick Karlquist
N6RK



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