On 5/1/16 6:30 PM, Chris Albertson wrote:
But are you sure you want SMPTE... Do you have a source already?
You don't need GPS or SMPTE if you have an Internet connection. The
computer can use a set of NTP servers from the "pool" to get time. The
result is good enough that the seed of sound delay resulting from your
random distance to the bell will be the largest source of error.
If you convert timing errors to distance at the speed of sound. You would
need the GPS only if you car about bell to ear distances of about one foot,
give or take
So for this use case the OP does not need a GPS or even a SMTPE connection
just a WiFi link to the internet would be more than enough for controlling
a horn blast from a light house
However, depending on how much work you want to do, it's easier to
decode the serial stream from a GPS receiver or SMPTE and close a relay,
than it is to set up an internet connection, make sure it's not
vulnerable, etc.etc.etc.
If you already have a PC with a connection, sure, it's straightforward,
but if you're starting from scratch, the work to get the whole internet
software stack up and running particularly on a small cheap board is
substantial.
If you already have a Arduino/Beaglebone/Rpi set up, and safely
connected to the internet, then you could just copy that; but if you've
not done it before, it takes a while.
_______________________________________________
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.
