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μWWVB: A Tiny WWVB Station · cat /var/log/life edit / delete
"μWWVB is a watch stand that automatically sets the time on atomic wristwatches where regular WWVB signal isn’t available. The system acquires the correct time via GPS and sets radio-controlled clocks by emulating the amplitude-modulated WWVB time signal." Awesome!
to amusements electronics radio time watch wwvb ... on 26 February 2017
Swedish Distributed Time Service edit / delete
"The NTP servers are custom build hardware (FPGA cards) with 10Gb/s interfaces that can answer signed and unsigned NTP questions over both IPv4 and IPv6 at line-rate speed."
Various time-and-frequency projects, including a Beaglebone Black-based wideband SDR that looks pretty neat.
to electronics hp ntp reverse-engineering rf sdr time ... on 08 June 2015
Time, Clock, and Calendar Programming In C edit / delete
Nice explanation of the various historical stages of development of the C time APIs.
to ag0803 api c calendar date posix time timing unix ... on 03 October 2014
One component radio clock time transmitter edit / delete
Very cute. I have fairly poor reception of the UK time signal up here in Dundee -- I'm now pondering a GPS- or NTP-locked local repeater...
Set the clock from the timestamp in a TLS handshake. Not a million miles away from my 404date script, although about a thousand times more complicated!
Building a Raspberry-Pi Stratum-1 NTP Server edit / delete
I've got a spare GPS module sitting around somewhere...
to clock gps ntp raspberry-pi time ... on 01 December 2013
Category:Clocks by time - Wikimedia Commons edit / delete
Cute use of Wikimedia metadata.
GPS-disciplined oscillators, upgrading classic Heathkit test equipment, etc.
to audio electronics gps heathkit oscillator test-equipment time ... on 28 May 2013
Raspberry Pi Stratum 1 NTP server with PPS – accurate timekeeping at low cost edit / delete
Must give this a try. Unfortunately the only GPS module I've got sitting around is one of the few that actually does RS232 rather than TTL signalling -- so I'd need to play a bit with level conversion.
to gps ntp raspberry-pi time ... on 08 April 2013
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tasty by Adam Sampson.