For data acquisition I use 2 different configurations which give pretty good results:
- Picoscope with my own Java librairies: <http://www.picotech.com/> http://www.picotech.com/ For 200€ you have a double channels 100ns 8 bits resolution ADC with USB connection - Or for 50€ an arduino with TC4 shield <http://code.google.com/p/tc4-shield/> http://code.google.com/p/tc4-shield/ 4 channels ADC 1 sample second but up to 18 bits resolution. Originally the shield was created to be used with TC and measure the temperature. I’ve modified the code to be used also as a simple ADC. If someone is interested by my code (C++ or Java), I will share it. There are alternatives to Labview but need more time (Not sure of this) to be implemented. _____ From: Eric Walker [mailto:[email protected]] Sent: dimanche 28 octobre 2012 20:57 To: [email protected] Subject: Re: [Vo]:Home made data logging ammeter On Sat, Oct 27, 2012 at 5:41 PM, Jeff Berkowitz <[email protected]> wrote: Hi all, I built this USB-connected ammeter so we could log current flow accurately and rapidly while doing electrolysis and also electroplating. http://pdxlenr.blogspot.com/2012/10/a-pretty-good-data-logging-ammeter.html Jeff In your blog post you wrote: I hadn't done any electronics construction at home in more than 10 years, and figured that by now computerized data acquisition would be inexpensive and standardized. Like fallin' off a log, or so I imagined. Boy, was I wrong. It sounds like at the present time getting set up with research-quality measurement data acquisition is either a do-it-yourself affair or something that requires a large capital expenditure on high-end instrumentation and LabView, and there's not much of a middle tier of solid but affordable components and software. I wonder where the hobbyist/inventor/small-business market is going in this regard -- whether there will be an increased demand for these things. You may have happened upon an interesting business opportunity. Eric
