We've developed a DCF77 receiver based on a Conrad C-Control module.

The source firmware is implemented using Arduino.

The core aim of the implemented algorithm is high stability and robustness.

The code can be found on GitHub https://github.com/shackspace/hgg/tree/master/hardware/dcf77.

• EM-406 GPS Module
• Adafruit GPS Logger Shield (Watterott)
• Arduino Mega 2560 (Watterott)

• SimpleGPS A very simple piece of Arduino code that measures the time between two PPS pulses

• Averaging and interpolation code to increase accuracy
• Higher clock rates for more accuracy
• Define interface for module interconnections