lpvef.blogg.se - Wwvb radio

Wwvb radio how to#
Wwvb radio Pc#

I modified the firmware to read the WWVB time clicks and set the time when two consecutive minutes were consistent. I checked the schematic of the clock and found places to grab 5V Vdd, ground and an unused Atmel input pin for reading the time code. I tried to connect one to my Ice Clock ( ) which uses an Atmel microprocessor (same family as arduino). The antenna is fragile and the flying leads are very easy to break off (yes, I learned the hard way). The antenna is a ferrite rod with many turns of fine wire and a capacitor in parallel that makes it resonant at about 60 kHz (the carrier frequency of WWVB). All workmanship appears to be satisfactory.

The electronics appear to be the same for both units, a small circuit board about 1 x 2 cm, only the antenna ferrite rod is a little longer for the “sensitive” model. Total shipping was only $5 and both arrived in a week or so in good shape. I bought two of these from PV Electronics in the UK, one of the standard models and one of the sensitive models. So, I’m still unsure which way I’m going to go here, but it looks as though hacking an existing clock might be the way to go, especially if I can find one at a thrift shop or garage sale. The second uses the module from an Atomix 13131.

Wwvb radio how to#

There are several Web pages that describe how to use the WWVB receiver modules from “atomic clocks.” One of the projects scavenges the WWVB module from a Sony clock. There are also several commercial receivers available, but the cheapest one I found is $220. One guy designed his own receiver, but it’s quite a bit more complex than simply using a single chip.

There are some plans that don’t use the C-MAX chip, but, of course, they’re much more complex. The price from a company called Earthshine is only six pounds, but that doesn’t include shipping, of course. Here are two:Ī couple of companies in the UK seem to still have the modules in stock. There are several Web pages that show how to interface the CMMR-6 module to an Arduino or a PIC processor. As recently as a couple of years ago, Digikey actually sold this module for about seven bucks.

Wwvb radio Pc#

Unfortunately, all of these kits use a little PC board made by a company called C-MAX, and the company has either discontinued making the IC that powers this module or simply quit selling this module in the U.S.

WWVB 60 kHz Time Receiver Module with Antenna.

I Googled “wwvb kits” and came up with the following: Schweitzer Engineering Laboratories, Inc.A recent news story about the 50th anniversary of WWVB got me to thinking about building my own WWVB receiver. WWVB Phase-Modulated Clocks (wall clocks, wristwatches, etc.) WWVB Clocks (wall clocks, wristwatches, etc.) The time and frequency receiver products from each manufacturer have been categorized as follows: GPSDO Further, NIST does not endorse any commercial products that may be advertised or available on these sites. NIST does not necessarily endorse the views expressed or the facts presented on these sites. NOTE: We have provided links to these sites because they have information that may be of interest to our users. Send corrections or additions to: timeinfo The manufacturers are listed alphabetically. The following list of links to manufacturers of time and frequency receivers may be incomplete, and inclusion on the list does not imply endorsement by NIST.