up: [[project:hgg|Project HGG]]

====== Project: HGG - Timing & Synchronization ======

===== DCF77 =====
==== Hardware ====
  * Conrad C-Control DCF Module ([[http://www.conrad.de/ce/de/product/641138/DCF-EMPFAENGERPLATINE/SHOP_AREA_17348|Conrad]])
  * Arduino Mega 2560 ([[http://www.watterott.com/de/Arduino-Mega-2560|Watterott]])

==== Software ====
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/hgg/modules/obsolete/dcf77]].


==== Documenation ==== 
A documentation on our efforts for the DCF77 Module can be found on the [[project:hgg:timing_and_synchronization:dcf77|DCF77 Subproject Page]]

===== GPS =====
{{http://shackspace.de/gallery/var/thumbs/Projekte/HGG/gps_adafruit_gps_shield_on_arduino_mega_2.jpg}}

==== Hardware ====
  * EM-406 GPS Module
  * Adafruit GPS Logger Shield ([[http://www.watterott.com/de/Adafruit-Data-Logging-Shield|Watterott]])
  * Arduino Mega 2560 ([[http://www.watterott.com/de/Arduino-Mega-2560|Watterott]])

==== Software ====
  * [[https://github.com/shackspace/hgg/tree/master/hgg/modules/obsolete/gps/simplegps|SimpleGPS]] A very simple piece of Arduino code that measures the time between two PPS pulses

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