Make a little program for the Lego RCX that counts and logs the pulses it receives as triggered by contact closure on the UM506. Then use a program to trigger N pulses over M minutes.
http://hawiki.pbwiki.com/X10RcxSignalAnalyzer
200MHz, 5GS/s, USB connected PC based oscilloscope.
http://www.softdsp.com
Data acquisition and analysis software.
http://www.notocord.com
based on AD9220
http://physics.syr.edu/research/elementary_particles/experimental/rich_elec_doc.html
Seisometers and dataloggers.
http://www.lennartz-electronic.de/
Supply PC/104 analog and digital I/O cards: high resolution and low drift for OEMs in military, aerospace, scientific and communication applications.
http://www.apexembedded.net/
Circular chart recorders and loggers for temperature, humidity and electrical signals
http://www.abacusinstruments.co.uk/
Manufacture a range of radio remote control and signaling products including transmitters, receivers and antenna for agricultural and industrial monitoring applications.
http://www.c3em.fr/accueil/index.php3