The NavSpark project on Indiegogo has been mentioned here already, but I just wanted to note that (apparently at my request) today they announced the design was modified to include a timestamp function on external trigger input. Oliver Huang / SkyTraq: "For NavSpark time accuracy is ~60nsec due to 16.368MHz clock. For -GL, -BD, time accuracy is ~40nsec due to 24.552MHz clock." http://www.indiegogo.com/projects/navspark-arduino-compatible-with-gps-gnss-receiver/x/6094574?c=comments
I think he means granularity or precision, and not absolute accuracy. The true time-nut may not have a use for 40 or 60 nsec precision, but for a 32-bit Arduino-compatible with built-in GPS receiver and GPS-referenced timestamp, complete system including antenna, shipped, for $19 (GPS only) or $22 (GPS + Glonass) I think it is one of the better values I have seen. It is probably the cheapest way to measure long-term drift of an OCXO, and the programmability means it might be the easiest building block to use if you want to build your own GPSDO. _______________________________________________ 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.
