On 10/5/11 12:59 PM, shali...@gmail.com wrote:
Jim,
This is an interesting product, thank for the link!
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
There's also the Labjack product... http://www.labjack.com/ USB
interface for events, ADC, etc. In the $100 range depending on the model.
A few years ago when it first came out, it was a pain because it was
Windows only, with limited protocol doc. But now they've got Linux,
Mac, Windows, with bindings for just about every language
-----Original Message-----
From: Jim Lux<jim...@earthlink.net>
Sender: time-nuts-boun...@febo.com
Date: Tue, 04 Oct 2011 08:40:55
To: Discussion of precise time and frequency measurement<time-nuts@febo.com>
Reply-To: Discussion of precise time and frequency measurement
<time-nuts@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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