It's not worth making a PCB, not when you can buy the whole thing already assembled for $3 with free shipping. I use these just as if they where a single chip and put them in a socket. See eBay 141505833625 as an example. Those holes are in 0.1 inch centers so you can figure out the size. (I get 1.3 inches long.) direct link <http://www.ebay.com/itm/ARDUINO-PRO-MINI-Nano-Pro-Mini-atmega328-Compatible-Nano-5V-16M-/141505833625?pt=LH_DefaultDomain_0&hash=item20f267aa99>
I'll write up what I built. It would be good to see the range of these. I tried to make mine as simple an low cost as possible without regard to anything else. Just to find the bottom line. I doubt I would have met that gaol by using a bare AVR chip. That is NOT simple because it requires so much more skill from the builder and with an entire working Arduino selling for $3 how much could you save? Actually the chips on that $3 board cost more than $3. (I don't even see how shipping from China can be that cheap.) On Sat, Dec 13, 2014 at 10:56 PM, Patrick Tudor <ptu...@ptudor.net> wrote: > > > > On Dec 13, 2014, at 9:47 PM, Chris Albertson <albertson.ch...@gmail.com> > wrote: > > > > Actually I've added some features to it like a 2 line by 16 character > LCD > > display and some status LEDs. And I can log data to a computer via a USB > > cable so it is easy to plot data and it is using my more expansive mast > > mounted timing antenna. > > > Just in case any of you like reading Arduino code, for fun or functions to > copy-and-paste, > the code for my PCB that combines an ATMega328p with an Adafruit GPS and > 16x2 LCD to display GPS info as it sends the PPS out the DB9 DCD is at > GitHub. > It’s not exactly, say, measuring oscillator cycles (yet... ) but it’s > perhaps > a good introduction for someone who’s never ever before used anything > Arduino. > (And now that I’ve done more PCBs with Cypress and FTDI chips, I wish I’d > put > that straight on my board instead of as a future daughterboard, but, > feature creep.) > > https://github.com/ptudor/jemma-clock > > PT > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.