albertson.ch...@gmail.com said: > What low cost GPSes should I look at?
These days, most low cost GPS units are USB, but those don't have a PPS signal. You may be able to find the PPS signal on the module in there if you take it apart. These are the only low cost ones I know of with PPS. Both require chopping off the connector they ship with and wiring up to an RS-232 connector and providing power. Garmin GPS 18x LVC: https://buy.garmin.com/shop/shop.do?pID=27594 http://www.provantage.com/garmin-010-00321-36~7GRMO006.htm Garmin has 3 versions of the GPS 18x. Be sure to get the LVC. GlobalSat MR-350: http://www.usglobalsat.com/p-58-mr-350p-bulkhead.aspx If you find any more inexpensive ones with PPS, please let me know. Those are hockey-puck, or mouse units, a clean package with a 15 ft cord. You can also find bare modules. Some of them require an antenna. Some have an antenna built in. Here are some examples. Google will probably find many more. http://www.sparkfun.com/categories/4 http://www.sparkfun.com/tutorials/127 Some of the older modules have a 10 KHz output. That makes building an analog PLL reasonable. Google for Jupiter. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.