What form does the output of your instrument take? Assuming that the signal your instrument produces is an analog voltage, you may be able to use an Arduino board and print the signal to the serial output. At this point you can use Octave, which is free, or Matlab to elaborate and display the data.

http://arduino.cc

http://arduino.cc/en/Reference/analogRead

http://wiki.octave.org/Instrument_control_package

To visualize you can use the free and powerful Seismic Unix package:

http://www.cwp.mines.edu/cwpcodes/

You might also try to explore Python module obspy to create miniseed files (or other formats): https://github.com/obspy/obspy/wiki

or IRIS C library of libmseed: https://seiscode.iris.washington.edu/projects/libmseed/wiki

Once the data is in digital format, give a look to those software for processing seismic waveforms:

http://www.seiscomp3.org/

http://alomax.free.fr/seisgram/SeisGram2K.html

Thank you a lot for all the answers... Now I have several software for the acquisition and analysis!!! In this way In this way I can to switch on our seismic stations.

Not sure what your homemade seismic station looks like, but the BGS seismology for schools project has lots of ideas for this sort of thing, including how to view the data.

http://www.bgs.ac.uk/schoolSeismology/seismometers.html

Good luck!

Dear Francesco,

you can try also the Seismowin sw which manages a lot of data format. It is available at:

http://www.sara.pg.it/prodotto.asp?idprod=15&idscatp=10

Try http://www.uib.no/en/rg/geodyn/54592/software

A lot of great suggestions.  Let me also suggest Symetric Research.  their single component, or 4 component, or 8 component digitizers are 24 bits and come with software for recording, including earthworm, designed for seismic data networks.  (less than $200/channel)

http://symmres.com

I have used a couple of these and have been very satisfied with the results and with customer service.

The first question is whether your homemade seismic station delivers an analogue or digital output signal. In case it's analogue you would need to digitize the signal to make it worthwhile to exploit (rather than just to print it on paper). I believe that you've got already a number of responses concerning that step. Once it's digital, there's quite a number of software packages (open source) which you can install on almost all kind of platforms (Unix, Linux, Max and Windows) to make use of the data. You may as well get in touch with one of the national seismic data centers to ask them for support (like in France we are one of these institutions). The national datacenter may well like the idea of getting access to "more" stations and help you.