I thought of a WiFi+NTP variant, but I haven’t played with the various ESPxxxx WiFi modules that are in vogue for Arduino and the like. From what I know about those, it’d probably be easiest to ditch the board’s ATTiny841 and just add support for the bit-banged SPI display controller directly to the ESP itself.
That said, you could probably add that same support - or even support for *proper* SPI - to the Pi as well. I’m using the MAX6951 for this, and I like it a *lot*. > On Dec 26, 2016, at 8:55 PM, Mark Sims <hol...@hotmail.com> wrote: > > Simple ain't for time nuts... I'm taking Heather, a PI, and the PI touch > screen and making a GPS disciplined alarm clock. I hate the alarm clock > that I have since to change the time or alarm you have to hold a button and > let the time cycle around until it gets to where you want it. If you go too > far, you have to do it all over again. It takes a couple of minutes to > change a time. Luckily, I seldom use an alarm clock. > > I'll probably power it through a USB power bank so it has a few hours of > battery back-up. I only need 15 seconds of backup since the house has an > automatic standby generator. I'll probably run it off one of the $5 Sirf-III > GPS modules... those things can track GPS down in darkest bowels of Heather's > dungeons. > > Heather has the GPS, time zone, DST, alarms, clock display (analog and/or > digital), etc already in there. The next version can run keyboard scripts > if you press F1 .. F10 so you can set common alarm times and configs in the > scripts and call them up from the on-screen touch keyboard. Plus it can sing > the quarter hours, crow at sunrise/sunset, sound church bells at solar > noon, etc. > > With a net connection / NTP, you don't even need a GPS. Heather v5 can run a > clock display off the CPU clock... but where's the fun in that? Plus, my > bedroom doesn't have the net / wi-fi. > > -------------------- > >> The second one will be up next week, and it’s a simple GPS clock > _______________________________________________ > 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. _______________________________________________ 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.
