I would recommend dumping that DC-DC converter and going with a simple 3-terminal regulator (or at least adding an option for it). It seems it would be a lot cheaper and easier for people to source the parts for it.

Hi all, Responding to a few comments: - The DC-DC converter has the same pinout as a 7805. It would be possible to substitute the linear regulator (as long as you handle the power dissipation of course). - I will likely switch to I2C for the LCD on the next revision. - Adding an input for an external 10MHz reference signal would not be a problem. I would also add a jumper for selecting the clock, and a disable jumper for the TCXO. The 16F1619 has an on-board 4x PLL, but the maximum operating frequency of the chip is 32MHz... An 8MHz external reference would be ideal, but of course not very common. Thanks Dan On Mon, Jun 20, 2016 at 12:48 AM, Mark Sims <holrum@hotmail.com> wrote: > I would recommend dumping that DC-DC converter and going with a simple > 3-terminal regulator (or at least adding an option for it). It seems it > would be a lot cheaper and easier for people to source the parts for it. > _______________________________________________ > 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. >