<https://lh5.googleusercontent.com/-PS9IlBAtXJ4/U6lB_VHaIFI/AAAAAAAAAK0/DbcReEmHYo8/s1600/P1010711.jpg> <https://lh4.googleusercontent.com/-Mp4oF93gc-w/U6lCJX-V8zI/AAAAAAAAAK8/U4GdQuIFxuE/s1600/P1010709.jpg> <https://lh5.googleusercontent.com/-PS9IlBAtXJ4/U6lB_VHaIFI/AAAAAAAAAK0/DbcReEmHYo8/s1600/P1010711.jpg> Inspired by Grahame Marsh's "approx" and "proverb" clocks ( http://www.sgitheach.org.uk/vfd3b.html), here's my effort. It tells the date and approximate time ("nearly ten to three" etc), has a complete calendar of US special days including the ones that move (eg it shows Easter correctly for the whole 21st century), a thousand different proverbs and quotations, and 366 historic birthdays, one for every day of the year. (I was torn who to pick for December 25th. The obvious would be Jesus Christ, but I opted for Sir Isaac Newton instead.) Additionally you can put in 30 messages of your own, such as birthday or anniversary reminders, to show on specific dates, plus sixteen of your favorite witty sayings or scurrilous remarks to show up at any time. I ended up with less than 128 bytes of Flash memory free and not a single unused byte of EEPROM, which gives me great satisfaction.
Since the LM9022 is going out of style, I used an Si9986 H bridge (U4, bottom right) for the filament AC, driven by the processor off the oscillator that generates the 35V. A pair of HV5812s drive the 16 grids and 16 anodes at a multiplex frequency of 1kHz. There's an ambient light sensor above the display for automatic brightness control. It plugs into any USB port for power, which is also the way you edit the personal messages. A supercap keeps time for a day or two when it's unplugged - personal messages are stored in EEPROM and won't be lost. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/dd3a2e0f-50b4-4605-9de4-f645475744b1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
