Bruce,
Yes that's exactly my plan. No GPS and designed for field use. A halfway
decent crystal with interpolation from 1 PPS timestamps should provide
decent results. And anything else I can dream up.
Bottom line is I need to know which micro-controller to embrace.
Thanks Didier for your
It's sort of a religious matter, but if you are looking for an easy-to-use
part with great, free C/C++ support, you'd most likely be happy with the
AtMEGA series.
-- john, KE5FX
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Jim Palfreyman
Sent:
My favorite for many uses is the Freescale MC68HC908QT4, or others in
that series. Freescale provides a complete C development environment
for free. The QT4 is an 8-pin package, with up to 6 I/O pins. I've used
it for everything from a 555 timer replacement to the controller for an
There are any number of
choices, including the PIC line, which everyone but me seems to love.
Bill,
You're not alone ;-)
Luis Cupido.
ct1dmk.
wje wrote:
My favorite for many uses is the Freescale MC68HC908QT4, or others in
that series. Freescale provides a complete C development
Luis Cupido escribió:
There are any number of
choices, including the PIC line, which everyone but me seems to love.
Bill,
You're not alone ;-)
Luis Cupido.
ct1dmk.
I'm with both of yours... This is a recurrent discussion here, and there
are some deep PIC lovers... but once I've used an
Well, I'm particularly fond of the MegaDonkey from mega-donkey.com It does
everything I want a microcontroller to do (it should, I designed it). Atmel
ATMEGA2561, 256K flash, 8K RAM, LCD 160x80 graphics touchscreen display,
two serial ports, IIC ports, A/D ports, lots of I/O pins,
Mark Sims wrote:
Well, I'm particularly fond of the MegaDonkey from mega-donkey.com It does
everything I want a microcontroller to do (it should, I designed it). Atmel
ATMEGA2561, 256K flash, 8K RAM, LCD 160x80 graphics touchscreen display,
two serial ports, IIC ports, A/D ports,
The URL works fine from here.
Pete
___
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.
There are any number of choices, including the PIC line, which
everyone but me seems to love.
Many years ago, Microchip was friendly to hobbyists so they collected a big
fan club.
--
These are my opinions, not necessarily my employer's. I hate spam.
It needs to drive a display of some form (standard LCD is fine but
other options would be good) and since nearly all my references are
based on 10MHz it would be nice if it could be clocked at that speed.
I used to program the Acorn Achimedes and so ARM would be nice and
since I'm a 20 year
Hello Hal,
The MegaDonkey can be programmed in one of three ways:
1) the on board bootloader via either of the onboard RS-232 ports (or use a
USB-RS232 dongle). The bootloader is VERY fast (over 10Kb/sec... about as fast
as the chip can write it's flash memory). One neat feature of the
At 03:04 PM 8/13/2008 , Mark Sims wrote:
approach. Atmel's programmers can be a bit cumbersome and finicky about
establishing connections to their processors.
No kidding! I'm hacking on the new HP 20B financial calculator (think of
it as a $40 AT91SAM7L128 demo board), and that SAMBA program
[EMAIL PROTECTED] wrote:
Thanks Bruce,
it would be interesting to see how the different topologies affect
phase noise and stability etc, and what kind of performance can be
achieved.
bye,
Said
Said
When the output signal is filtered by the crystal, the phase
[EMAIL PROTECTED] wrote:
Thanks Bruce,
it would be interesting to see how the different topologies affect
phase noise and stability etc, and what kind of performance can be
achieved.
bye,
Said
Said
One way to evaluate the merits of various oscillator circuits
Another view !
I found myself going in another direction recently...
PC104 :-)
...
Designing a board for a really small think, one's
favorite either PIC 51's ATmel freescale or whatever
seems to be fine.
A small demo board or existing PCB from some vendors
seems fine to me also.
but when it
Yup, I agree.
I wish I did have one of those TSC5120A's!
Or at least an E5052A/B.
bye,
Said
In a message dated 8/13/2008 16:03:00 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
[EMAIL PROTECTED] wrote:
Thanks Bruce,
it would be interesting to see how the different
[EMAIL PROTECTED] wrote:
Yup, I agree.
I wish I did have one of those TSC5120A's!
Or at least an E5052A/B.
bye,
Said
Said
Maybe a competition between various designs is in order?
Restricting the designs to those reputed to have low phase noise and/or
high stability is
If you don't want pushbutton convenience, you can measure the close-in phase
noise with not much more than a $5 mixer and $2 opamp. It will take a lot
of sweat equity, and you will need to build two of whatever you're
measuring, or buy/borrow a known-cleaner source at the same frequency.
TSC
any ARM7 outperforms the best PIC in price and performance :)
http://beagleboard.org/
Get them from DigiKey, $149.
http://dkc1.digikey.com/us/mkt/beagleboard.html
The USB-powered Beagle Board is a low-cost, fan-less single board
computer utilizing Texas Instruments' OMAP3530 [ARM]
John Miles wrote:
If you don't want pushbutton convenience, you can measure the close-in phase
noise with not much more than a $5 mixer and $2 opamp. It will take a lot
of sweat equity, and you will need to build two of whatever you're
measuring, or buy/borrow a known-cleaner source at the
20 matches
Mail list logo
