Richard B. Gilbert wrote: > Terje Mathisen wrote: >> Using a USB port for the +5V line is the canonical solution: Very >> cheap, dependable, and no extra wall warts. >> >> Terje >> > > I have read claims here that the high and unpredictable latencies in USB > render it useless for time keeping!
So, apparently not entirely useless. Using USB as a power source is getting to be highly popular. Witness the number of cup warmers, fan, etc. on the market. As long as you don't try to read the signal via USB, it should be okay. One thought occurs to me. Would it work to have the PPS signal go to a serial port but the actual NMEA sentences be read via USB? It seems to me if the total jitter of the USB still kept the snetences timing within half a second it would work. Brian Utterback _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
