It's been a while since the last time I posted.
Most of the time I was busy building a radio clock receiver.
First version, a direct amplification VLF receiver, kind of
worked and I even managed to decode the signal in
but reception is very poor. There are problems with
selectivity and it's barely possible to amplify signal
without amplifying all of the terrible noise that loves to
dwell in VLF range.
Current project is Superhet VLF
receiver. So far so good, the mixed signal board is
ready. It has 2
chips (one for LO, one for
IF->baseband), two external
ADC's, to make it
possible to sample I and Q simultaneously, and some of the
fun stuff: rotary encoder, two hook switches and a PLED
display. And, of course,
to rule them all. Well, observe
out ADC quality, enjoy. From what I can see now, there
is still enough memory and time frame to do decoding of
MSF or DCF77
stations in the same uC. So far so good, I'm
And yes, this is all for a Nixie clock project, ha! I really
should share the schematics later, that's the best way to
Every once in a while I have to make my own Eagle libraries
for my projects. I've put online what I've
got so far. Enjoy!
Just another, check out my one-evening
project. It involves floppy drive motor, free energy,
air fan and 6 LED's. Everybody is ought to love this!