On Fri, Dec 30, 2011 at 11:46 AM, Stanley <[email protected]> wrote: > > >> >>> "What is the simplest design for a GPSDO that uses only the PPS signal >>> from >>> a modern GPS?" >> >> >> Some sort of oscillator with a voltage control. >> CPU with a timer/counter that can capture the PPS. >> DAC. >> Software. >> > > How about MSC1200 : http://www.ti.com/lit/ds/symlink/msc1200y3.pdf
I don't count anything with a computer and software inside as "simple". My definition of a simple device is a capacitor or a transistor or I guess a single flip-flop or op-amp. A simple controller would some how use about two dozen or less of these kinds of components. Home heating thermostats can be simple of complex. Some use LCD displays and a computer. Other have a simple bimetallic spring inside. If this CAN'T be done. And if a computer is really required. I'm going to go all out and use a "real" computer. Something that can run an operating system and talk on the network. Here is an example of what I mean http://www.embeddedarm.com/products/board-detail.php?tab=options&product=TS-7550# No one really wants a device that connects to a computer over a serial port. That was 20 years ago. The above board can host a web site and log data to a USB thumb drive and burns less then 2W of power But for now I'm looking for a controller that is much more like the bimetallic spring thermostat. Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
