On Mon, Jan 30, 2017 at 11:23 AM, Dekatron42 wrote: Paolo, that is exactly what I was thinking of! Now I have to get a > programmer and a small PIC or something similar and experiment with it! >
Choosing a microcontroller will be harder than everything else: too many options! Unfortunately DS3231 does not permanently store information on the 1 pps output, which is disabled by default (like applying power or replacing the backup battery). I have not tested if the SQW output runs even if the RTC chip is in the uninitialized state, i.e. when power is first applied without the backup battery. So you may consider sending both a fictional but valid date/time and enabling the 1pps output every time power is applied. If I had to do it I would probably use an ATtinyXYZ running on the internal RC oscillator and an Arduino bootloader for ease of programming (I have some Attiny85 DigiSpark boards that would do that). Paolo -- 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/CABj2Vaaeioe1h--TcqnaZK8yvcPyS7bv8G_3yawOTdmxo-G-Rw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
