|| Ryan McDonald wrote: || || I hope this is not considered spam, but I'm enjoying || my build so much, I thought others might too. I have || pictures of what I've done so far with WWVB and uC prep. | | Looks good to me, too. | | I'm still waiting to see a psuedocode WWVB | implementation posted. :) | | -Adam
Literally, hack & wack. Gotta love it. And slapping together your own tools, too. Combine that with high voltage (exposed hopefully, for now), and you have my concept of nirvana ! I pretty sure most of the group enjoys it, too ! I'd like to see more of it. I haven't done WWVB decoding, but I have done IRIG timecode decoding and encoding. Its very similar. If I'm not mistaken, WWVB was based on IRIG, or the other way around. Its not all that complicated. Its an AM modulated signal. The date and time is encoded in BCD nibbles. The date is given in Julian format. That is Jan 1 = day 001, and Dec 31 = day 365 (or 366, for leap year). There are three types of data bits: 0,1, & R (reference). Each is represented as a pulse of varying duty cycle: 20%, 50%, & 80%. I have to dig into my notes, to find which DC corresponds to which bit value. Or you can just Wiki, or Google it. The data comes at you at relatively slow rate, so even a small slow uC can decode it. I originally did it on a Z80, but that was in the 80s. Plus that Z80 (@4MHz) was also doing a zillion other tasks. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
