[time-nuts] ***SPAM*** Oncore m12+t PPS sawtooth correction board.
EWKehren at aol.com
EWKehren at aol.com
Wed Dec 3 06:18:34 EST 2014
In the recent past I did offer a board and parts for some one to take on
the PIC programming for a saw tooth correction board. No takers.My offer
still stands. One of our tem members has a nice working unit in PIC Basic not
understanding code it does how ever look very simple. I think what would be
nice is a chip that works with the different GPS units. As time nuts having
hardware saw tooth correction should be of interest.
I also have a ublox design waiting for the PIC code again the same offer.
The code should also have the feature that the GPS engine can be instructed
to do a survey with out having to use a PC.
If any one is interested please contact me off list once we have it working
I will gladly do a board that will work with the units the code has been
written for, after discussion on the list what should be on the board.
In a message dated 12/3/2014 1:37:03 A.M. Eastern Standard Time,
michael.cook at sfr.fr writes:
I would certainly be interested. I have 4 receivers that I would like to
add that feature to. I was thinking of also trying the technique with other
receivers, such as Trimble Jupiter/SMT or newer Ublox which provide
quantization data so I was thinking of a more generic serial/PPS pass through
which could handle all those protocols quantization messages.
> Le 3 déc. 2014 à 04:56, Tom Wimmenhove <tom.wimmenhove at gmail.com> a
> I'm using a soekris net4501 that I hacked according to
> I have hacked a Motorola Oncore M12+T receiver inside the case on a piece
> of veroboard. It's really ugly, using a bunch of discretes for RS232
> translation and such.
> A BNC on the front privides PPS for use with other external hardware.
> Recenlty I felt the need to add hardware sawtooth correction. I want to
> the Dallas DS1023 chip to do this. I designed a little board as a
> for the motorola, a little micro, the delay line for sawtooth correction
> and rs232 for the soekris (but could, of course, also be used to connect
> any other device that has RS232).
> I was wondering if there was any interest from other people for a little
> board like this. I don't have the parts yet, but the DS1023 is pretty
> the most exotic part on the board.
> I have attached some pictures of the design.
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