Monthly Archives: December 2013

Devices and Device Links As we shall see later the Reference Clock driver in NTP needs to see the Oncore Serial I/O and Oncore PPS signals on specific device names and these are not yet configured by the kernel we … Continue reading →

Pulse Per Second (at RS232 Level) Attached the scope to verify the PPS signal.  This is a slightly confusing waveform as the signal is inverted on the wire (it is inverted back to the original when is passes through the … Continue reading →

A diversion… almost fell at the first hurdle In the lab I have two computers, a desktop PC and a MacMini, that provide day to day computing. The Mac for iPhone development and the PC for general duties.  I powered … Continue reading →

An unused Raspberry Pi I have had a Raspberry Pi lying around since they were first released and after a couple of hours of tinkering with it I gave up on it and put it back in its box where … Continue reading →