> From: "Steve Hammond"
> > Has anybody incorporated a BasicStamp micro in the construction of their > seismograph, tools, amplifiers, or A/D? > Regards, Steve Hammond -- PSN Aptos, California I have done a lot of work with the BasicStamp and PIC microprocessors and I am currently finishing up a PIC based design: You can use the Stamp/PIC pseudo RS-232 output at 9600bps 8N0 to record data with the Win freeware "Amaseis" program by Alan Jones.. http://www.geol.binghamton.edu/faculty/jones/as1.html Alan has been very helpful in tweaking Amaseis to work with devices like Stamps, PICs and DataQ units from RS. Your output ASCII data records can be + or - numbers with magnitudes up to 32767 (perhaps greater) and each record is terminated with LF and CR characters. Amaseis can create data records that can be read by WinQuake. Let me know if you need any more information. Records look like +33LFCR -10LFCR .... My single board system (amp/filter/adc/serial) draws its power from the serial port, so its starts working as soon as you plug it in. I am using a single low noise opamp (LT1677), an 8 pole bessel filter chip (MAX7401) and a PIC14000 with onboard 16 bit a/d. I use free/shareware to set my PC clock to accurate time and to maintain the time base within a fraction of a second/week. I just sent a beta version to Angel Rodriguez in Panama for use with 4.5 Hz geophones. I am looking for more beta testers. My goal is make it simple to construct a high quality Lehman or geophone system for less then $200. Ciao, Dave __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>