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1  Forum 2005-2010 (read only) / Interfacing / External ADC for scientific application (HPLC) on: October 14, 2010, 11:41:22 am
Hello, I'm a forum's worst nightmare; I'm a n00b to microprocessors, a biochemist, a medical student and researcher, only hobby programmer (C++ & Java) with a CS minor, and of course I have lots of clueless questions!

Research budgets can often be ridiculously small and we're trying to develop an Arduino datalogger solution for reading sensor data from some of our equipment. We've previously used LabView and a DAQ with success but are looking for a more customizable application we can use cheaply on more systems. We're doing high performance liquid chromatography (HPLC) for biologic samples if that matters. We plan on publishing and open-sourcing any successful results.

So, the HPLC machines work well and produce a signal from a cathode/anode sensor, a UV sensor or the like. Detecting and recording this signal with an Arduino is the goal of our current project. Sadly the Arduino's 10 bit resolution ADC is probably insufficient and I'm interested in an external ADC. Boy, did I take too long explaining that?

I'm looking at an Arduino Uno with prototyping board and various ADCs:
We're interested in >=16 bit resolution and 100SPS would be really nice. Bigger is better of course. Are there any thoughts on this or perhaps tutorials or blogs that I missed in my research? Perhaps I'm wrong looking at Arduino but it certainly seems like a powerful platform and I'm interested in some of the scientific work that I've seen exploring it's possibilities (for example: http://phys.csuchico.edu/~eayars/publications/Arduino-datalogger.pdf)

Also, I'm sure I'll eventually be bugging the software interface forums as I write into our existing Java based software new code to interface with the datalogging Arduino. By the way, we're looking at transferring the data with a USB port and using USB/wall power so data storage and battery life will hopefully not be issues.

Thank you for you consideration,
/me
2  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Open Source Data Logger Project Using the Arduino? on: October 14, 2010, 11:41:10 am
Hi, I'm very new and a scientist interested in dataloggers.

I'm mainly interested in one that can work by sending data to a computer as it analyzes a signal. Does something like that exist? This wouldn't require battery power or very much data storage...
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