I always assumed that the raspi's were fast enough to take anything I threw at them. Wrong! The p3 can sample 2 accelerometers at 30 samp/sec, and the zero at about 15. That's probably enough for a velocity seismometer running below 10 Hz. All the damage comes at 1 to 2 Hz anyway. So, I envision a bunch of zeros running these. I have to wait until I can actually buy them. I've used up my 'one to a customer'. They still make them in fairlyland Wales, but they use robots. Speed it up, boys!