[time-nuts] [Solved] Looking for multiple PPS timestamp loggi ng

Reeves Paul Paul.Reeves at uk.thalesgroup.com
Thu Oct 6 09:08:44 UTC 2011


And there is this kit from Andy, G4JNT, which might do....
 
www.g4jnt.com/HF-10.htm   
http://www.g4jnt.com/SerialLogger_ShortForm.pdf


Paul  G8GJA


-----Original Message-----
From: shalimr9 at gmail.com [mailto:shalimr9 at gmail.com] 
Sent: 05 October 2011 21:00
To: Time-Nuts
Subject: Re: [time-nuts] [Solved] Looking for multiple PPS timestamp logging

Jim,

This is an interesting product, thank for the link!

Didier KO4BB

Sent from my BlackBerry Wireless thingy while I do other things...

-----Original Message-----
From: Jim Lux <jimlux at earthlink.net>
Sender: time-nuts-bounces at febo.com
Date: Tue, 04 Oct 2011 08:40:55
To: Discussion of precise time and frequency measurement<time-nuts at febo.com>
Reply-To: Discussion of precise time and frequency measurement
	<time-nuts at febo.com>
Subject: Re: [time-nuts] [Solved] Looking for multiple PPS timestamp logging

On 10/4/11 8:03 AM, Kevin Rosenberg wrote:

> So, if you know of any simple ADC to UART firmwares available, that'd 
> be great so he can just reference someone else's code. The picPET is a 
> perfect device at the perfect time. But, we can't rely on tvb to come 
> up with a 'picADC' at a similarly serendipitous time.
>

DATAQ

http://www.dataq.com/products/startkit/di145.html

$29, 4 channel 10 bit ADC with USB  interface

You'll need to cobble up a sensor, of course, and I don't know if the
resolution of the di145 is good enough (20mV/LSB as I recall) for a
LM335 (10mV/Kelvin?).  One thing you get with cheap is a +/- 10V full scale
range.

A thermistor and resistor into the DATAQ might work better.

Maxim/Dallas One-Wire devices are another possibility  There's tons of PIC
code out there to interface to them.  The sensors are cheap (few bucks,
depending on whether you buy raw device, or you get one potted with a cable)
Sparkfun.com has them, among other places.


There's also a whole raft of USB temperature loggers out there from Onset
(HOBO) or DataQ or a variety of other companies.  They tend to run in the
$80 range  (if someone knows about a battery powered temperature logger in
the under $25 range, I'd love to hear about it)

And, of course, a DMM with a RS-232 interface is another possibility


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