[time-nuts] locate 6 digit digital clock
CollinG at navcanada.ca
Thu Jun 9 11:21:40 UTC 2011
Now that is very high in the cool factor!
This has been an interesting thread and got me to thinking about
building something similar for myself.
A quick search for Arduino and LED or LCD Clock returned many hits and
lots of interesting ideas for rolling my own.
For those not acquainted Arduino it is a simple development/learning
platform based on an Atmel chip which has become very popular for
hacking and playing around with. So popular in fact that you can now get
PIC and a 75 MHz ARM based Arduino like compatible boards - same form
factor and common IDE.
You could for example take an Arduino board, plug on a LCD display
shield, add a simple "sketch" (aka program) and have a functional clock,
- add some software to sync to a gps 1 pps (etc, etc).
The plug on boards with different functionalities are called shields and
you can get pretty much whatever you would like - Ethernet, wireless,
Bluetooth, etc. Do a quick general Google search or have a look on eBay;
you might be surprised.
Cheers, Graham ve3gtc
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Poul-Henning Kamp
Sent: June 8, 2011 15:11
To: Flemming Larsen; Discussion of precise time and frequency
Subject: Re: [time-nuts] locate 6 digit digital clock
In message <985823.67392.qm at web24819.mail.ird.yahoo.com>, Flemming
I recently turned a HP frequency counter into a style-fitting
clock for our workshop in Danish Computer History Association:
(Google translate does a decent job)
I used a PIC18mumble and a DS3231 RTC.
Since the RTC also tracks day-month-year, it was trivial to let it
run in UTC and program the pic18 to figure out timezone + DST.
Even if you use a uP to count time, it would make good sense to
include a RTC so you don't have to reset the clock after each
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by
the instructions there.
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