[time-nuts] Shera PIC Firmware file

EB4APL eb4apl at cembreros.jazztel.es
Tue Aug 28 17:20:18 EDT 2012


Hi guys,

The hex file is quite outdated.  In 2009 I contacted Brook Shera in 
order to get the source code as I wanted to build this controller and 
wanted to change the PIC to use a Flash one and add some improvements.   
His response was that he already had changed the microcontroler for a 
more modern unit, a PIC 16F876A, and included a lot of improvements.  He 
also informed me that he was not releasing the hex or source code 
anymore but he could sell me programmed PICs with the last version and 
some other components like the AD1861  at least while his supply last.  
He also supplied me the critical 74HC4046's and even the 24 MHz xtal 
oscillator.
I also ordered a board from A&A Engineering and now I have to find the 
time to build it.

So I recommend you contact with Mr Shera for the last versions of this 
software.  His email has changed since the mentioned QST article and in 
2009 was: ebs(AT)mailaps.org

Best regards,
Ignacio, EB4APL



On 28/08/2012 7:30, WB6BNQ wrote:
> Hi Ron,
>
> My apologies, I got to typing and forgot to append the URL line; which is:
>
> http://www.rt66.com/~shera/index_fs.htm
>
> Sorry about that !  If you haven't already it is worth reading the original QST
> article which he has a link to at the bottom of the page.
>
> Bill....WB6BNQ
>
>
> Ron Ward wrote:
>
>> Hi Bill:
>> I don't see the address for Shera's web page!
>> Thanks,
>> Ron
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of WB6BNQ
>> Sent: Monday, August 27, 2012 3:16 PM
>> To: Discussion of precise time and frequency measurement
>> Subject: Re: [time-nuts] Shera PIC Firmware file
>>
>> Ron,
>>
>> Here is Mr. Shera's actual web page on the topic.  At the bottom you will
>> find
>> the HEX file file for the firmware.
>>
>> Don't ask as there is no published assembly listing of the firmware.  Mr.
>> Shera
>> does not feel like releasing it to the general public at this time.
>>
>> Also, on that page is a link to the original article he wrote on the
>> project.  So
>> it is a good page to bookmark.
>>
>> Bill....WB6BNQ
>>
>> Ron Ward wrote:
>>
>>> Hi again all:
>>>
>>> Does anyone know where I can get a copy of Shera's PIC firmware for his
>>> GPS-Based Frequency Standard?
>>>
>>>
>>>
>>> Also, what enhancements are available for the latest firmware?
>>>
>>>
>>>
>>> Thanks again,
>>>
>>> Ron
>>>
>>>
>>>
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