datalogging temperature and lvdt sensor

Using Arduino Project Guidance
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hey guys
so i wanted to try to make a small and discreet box with a datalogger that can log temperature and lvdt (movement with 4-20 mA) and im trying to find the right board for me, i would also like to be able to turn the data into a excel graph that i can recover from the arduino trough wifi or bluetooth.

so im really asking for which is the smallest board i can use and still be able to have accurate measurments.

Would love some feedback and questions if you need more information to help.

Thanks :wink:

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You look at the Adafruit M0 feather data logger? I got one yesterday, so I'm not an expert on it, but if you save a comma delimited line of strings you can open that up directly in Excel and it'll convert it on the fly. I've written to SD from Arduino, but not taken that card onto a PC yet

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thanks mate
I think that´ll do

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just realized that i need 5v analog inputs, the one you recommended can only handle 3,3v, but thank you for your suggestion

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espens98:
just realized that i need 5v analog inputs, the one you recommended can only handle 3,3v, but thank you for your suggestion

Why?

Temp sensor could be DS18B20 or an I2C sensor.
Both can work on 3.3volt.
And 4-20mA sensors also can work with 3.3volt.

Detailed advice requires reading the forum posting guidelines.
Leo..

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There are always logic level converters so that you can use 5v and 3.3v devices together. playing with that at this very moment ironically.

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Accuracy of your measurements has nothing to do with the size of your board and, if you are paranoid about size, you should consider the power supply just as carefully. Since Excel is the objective, you can use the PLX DAQ v2 macro to record directly into Excel and even display live graphs. This can be done via bluetooth or USB cable.

http://forum.arduino.cc/index.php?topic=437398.0

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