Update: Stratum 1 Pi Clock, now with RTC

Linux, Raspberry Pi
To improve my stratum 1 clock, I added something I wish the RPi had from the factory, a real time clock (RTC). I found a cheap DS3231 rtc module, which is the successor to the less accurate DS1307. The module I found just plugged into pins 1 (3v3),3 (SDA), 5(SCL), 7(GPCLK0), and 9 (GND), which meant it didn't interfere with the pins I used for the GPS module. Even better, it was only around $1 shipped. (more…)
Read More