Post by thread:[PICLIST] [BUY] Atomic Clock Receiver

If you mean a clock that receives time via radio (WWVB), there are many. Check out Radio Shack for their $40.00 Oregon Scientific version http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F007%5F012%5F001%5F000&product%5Fid=63%2D968 or browse these search results for other options. http://www.radioshack.com/searchgate.asp?type=ALL&find=atomic http://www.oregonscientific.com/ http://www.oregonscientific.com/keepingtime.html There are several web retailers selling these sorts of clocks as well. BTW they already use a PIC <G>. You'll just need to tap off and decode the recovered 60khz data stream coming from the antenna. Michael Cook wrote: > > Does anyone know where I can get an atomic clock receiver that I could > interface to a pic? The big problem is cost, I'm not willing to spend more > than $50 USD. If anyone could recommend one, I'd really appreciate it. > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

I tracked down a company a few months ago that make 2 different chips for receiving the atomic clock pulses. I am sending this before I find them again. I sent an email to the site below requesting help. The company that makes the chips does not seem to be in any search engine on the internet. The atomic clock manufacturers all use chips from this company. Here is the government site for the atomic clock in Colorado. The system was upgraded a few years ago so that within 2000 mile of the site you can receive the signals. Germany has its own version, as does England and Japan. The data sheet shows the timing pulses for each country. The data sheet shows how to use a ferrite bead tuned to 60khz, the tranmission frequency. The chip decodes the signal to interface it into a microprocessor. I was thinking that someone needs to design an atomic clock to RS-232 module for the home automation industry. I am in the lighting control industry and most home automation systems have very poor accuracy with their internal clocks. This would be a great add on! Well, there is an idea for someone with more time on their hands than me! Maybe someone out there can track down the manufacture. I am also going to look for the data sheet they sent me! Mike Reid http://www.boulder.nist.gov/timefreq/index.html -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

"Michael C. Reid" wrote: [snip] > I was thinking that someone needs to design an atomic clock to RS-232 module > for the home automation industry. I am in the lighting control industry and > most home automation systems have very poor accuracy with their internal > clocks. This would be a great add on! Well, there is an idea for someone > with more time on their hands than me! Do a search on Zeit or Arcron ... they make an atomic clock with an RS-232 interface to set a PC's clock. -Nick T. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

I have made a GPS reciever to PIC for this reason... -----Original Message----- From: Nick Taylor [spam_OUTntaylorTakeThisOuTJPS.NET] Sent: Wednesday, June 13, 2001 11:13 To: .....PICLISTKILLspam@spam@MITVMA.MIT.EDU Subject: Re: [BUY] Atomic Clock Receiver "Michael C. Reid" wrote: [snip] > I was thinking that someone needs to design an atomic clock to RS-232 module > for the home automation industry. I am in the lighting control industry and > most home automation systems have very poor accuracy with their internal > clocks. This would be a great add on! Well, there is an idea for someone > with more time on their hands than me! Do a search on Zeit or Arcron ... they make an atomic clock with an RS-232 interface to set a PC's clock. -Nick T. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

Had great succcess with this http://www.galsys.co.uk/galmodul.htm HTH ----- Original Message ----- From: "Michael C. Reid" <mikecreidKILLspamQWEST.NET> To: <.....PICLISTKILLspam.....MITVMA.MIT.EDU> Sent: 13 June 2001 01:44 Subject: [BUY] Atomic Clock Receiver > I tracked down a company a few months ago that make 2 different chips for > receiving the atomic clock pulses. I am sending this before I find them > again. I sent an email to the site below requesting help. The company that {Quote hidden}> makes the chips does not seem to be in any search engine on the internet. > The atomic clock manufacturers all use chips from this company. > > > Here is the government site for the atomic clock in Colorado. The system > was upgraded a few years ago so that within 2000 mile of the site you can > receive the signals. Germany has its own version, as does England and > Japan. The data sheet shows the timing pulses for each country. The data > sheet shows how to use a ferrite bead tuned to 60khz, the tranmission > frequency. The chip decodes the signal to interface it into a > microprocessor. > > I was thinking that someone needs to design an atomic clock to RS-232 module > for the home automation industry. I am in the lighting control industry and {Quote hidden}> most home automation systems have very poor accuracy with their internal > clocks. This would be a great add on! Well, there is an idea for someone > with more time on their hands than me! > > Maybe someone out there can track down the manufacture. I am also going to > look for the data sheet they sent me! > > Mike Reid > > http://www.boulder.nist.gov/timefreq/index.html > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

Careful, The format of the transmitted signals is different. A Receiver which decodes signals transmitted by MSF will not decode the signals transmitted from Colorado (WWV?) even though they both operate on 60kHz. Their dedicated Receiver IC are suitable though. They are actually manufactured by Gunter Semiconductor http://www.gsg-asia.com/ic_data_sheet/ak2124.pdf Temic also make (made?) chips U4223B. I believe that they are now part of Atmel. You will of course have to add a PIC to do the decoding. 8-) Regards Chris Carr {Original Message removed}