MSF clock module

[derryck]

I bought a radio controlled clock yesterday from Argos for 8.99GBP and was pleased to see that it has an easily detatchable MSF receiver module. (ferrite rod antenna and small PCB with 5 connections). I am looking for information on the output from this module,

A search on Google for rugby time clock gives the answer in the first result, and there is a link on the resulting web page to the data sheet for the transmission format. It's sent in BCD using longer or shorter pulse gaps as you've seen with your 'scope.

I suspect that you will have to use an interrupt routine to grab the incoming pulse stream so as not to miss one of those gaps.

Please post if you're successful in this!