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

Richard (Rick) Karlquist richard at karlquist.com
Wed Dec 13 16:03:30 EST 2017


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 <
> richard at 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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