Comments on: Arduino DCF77 radio clock receiver

By: Lyrez

Lyrez — Tue, 30 Nov 2010 21:05:12 +0000

Hi,
I tried my DCF77 module, and happened to encounter same troubles as many ( as several peaks per second, or 5 peaks per second then nothing) and then i hooked up a low pass filter (made with a 4.7mH inductor and a 10µF capacitor) on the power line of the DCF77 (I use a arduino mega, and my DCF is powered by 3.3V, but it should work as well on 5V)
Then, there’s a real improvment, i can “lock” in one or two minutes). I live in North France, that is no really very close to Frankfort …
Hope this helps !

By: Koelewijn

Koelewijn — Sun, 31 Oct 2010 20:57:40 +0000

Hi there,
I have this module : http://cgi.ebay.nl/DCF-77-Receiver-Module-Atomic-Time-Receiver-DCF77-/230545017637?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item35ad8dcb25
But it has only an inverted output. Can anyone help me with the code/schematic for arduino?
Thanks a lot..

By: BajK

BajK — Thu, 21 Oct 2010 10:57:21 +0000

So, I built everything together as specified in your sketch and the receive LED blinks well in like five seconds intervals differenting but it only gets time 0:0:0 and date 0.0.0 and sometimes time 0:0:1 or 0:0:2

By: BajK

BajK — Thu, 07 Oct 2010 12:14:52 +0000

The DCF-Empfänger you specified is no longer available (under that name?) at Conrad.
Stick with this one:
http://www.conrad.de/ce/de/product/641138/DCF-EMPFAENGERPLATINE

By: orang

orang — Sat, 11 Sep 2010 19:23:10 +0000

I tried to get your code to run on a Duemilanove which didn’t work at first. I figured out some very small changes in the names of some of the timers used by the ATMega 328. Might be useful for the people getting here from the arduino playground. Just rename the timers in the original code to the ones listed below:

TCCR2 to TCCR2A, TIMSK to TIMSK2, OCIE2 to OCIE2A

Compile, upload to your Duemilanove and have fun!

By: Bookmarks for August 25th through August 26th « Daniel Nisbet

Bookmarks for August 25th through August 26th « Daniel Nisbet — Thu, 26 Aug 2010 14:08:52 +0000

[...] gonium.net » Blog Archive » Arduino DCF77 radio clock receiver – [...]

By: soulid

soulid — Sun, 18 Apr 2010 19:44:52 +0000

Hallo,
I am asking myself if there is any software switch when to believe the the DCF time is correctly received and does not have any outages.
Is there somthing I didn’t see?

By: Stefan

Stefan — Mon, 19 Oct 2009 20:47:18 +0000

Hi md,

I have some trouble, to get my clock running…
I’ve got a signal but no value coming in :(

maybe my debug text can help you to find an answer:

Initializing DCF77 lib
Using DCF77 pin #
Time: 0:0:1 Date: 0.0.0
Time: 0:0:1 Date: 0.0.0
: Double flank detected
0: DCF77 Signal detected, Time: 0:0:1 Date: 0.0.0
duration: 171, appending value at position 0
Time: 0:0:2 Date: 0.0.0
Time: 0:0:2 Date: 0.0.0
: Double flank detected
0: DCF77 Signal detected, Time: 0:0:2 Date: 0.0.0
duration: 409, appending value at position 0
Time: 0:0:3 Date: 0.0.0
Time: 0:0:4 Date: 0.0.0
648: DCF77 Signal detected, Time: 0:0:4 Date: 0.0.0
duration: 102, appending value

thanks a lot,
Stefan

By: md

md — Wed, 16 Sep 2009 15:40:15 +0000

Hi Alexander,

have a look here: http://gonium.net/md/2009/09/16/dcf77-radio-receiver-filter-signals/
Gwen was having similar problems, maybe his solution works for you.

-Mathias

By: Alexander

Alexander — Tue, 15 Sep 2009 07:54:23 +0000

I have recently got the DCF77 module from Conrad, and connected it to my Arduino Duemillanueve. My DCF77 module is highly unstable. I am unable to recieve one signal/second, i get anything from 4signals/second to 0signals/second. It just depends on how the module is lying on my desk.

My guess is that this module isnt able to detect DCF77 signals outside of central Europe(i live in the south of Sweden).

//Alexander