Re: [time-nuts] Mains Frequency Monitor with the PIC 16F1619

2016-06-21 Thread Daniel Watson
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

Re: [time-nuts] Mains Frequency Monitor with the PIC 16F1619 (Daniel Watson)

2016-06-20 Thread Van Horn, David
Amusing story: Back in high school, Ewa Beach Hawaii, I used to notice that the second hand on the clocks would sometimes slow significantly. This turned out to be caused by the man who would later become my father in law. He ran the steel mill, melting old cars into rebar, which was

Re: [time-nuts] Mains Frequency Monitor with the PIC 16F1619 (Daniel Watson)

2016-06-20 Thread Hal Murray
t...@electrictime.com said: > In the suburb of Boston where we are located - you never have to correct an > electrical clock between the daylight saving time changes. This of course > assumes you haven't lost power - due to major snow storms etc I agree with the spirit of your comment, but

Re: [time-nuts] Mains Frequency Monitor with the PIC 16F1619

2016-06-19 Thread Pete Lancashire
Dan, Nice. Ideas for the next go around + Add a 10 MHz in circuit to replace or override the TCXO. , this is Time-Nuts you know :-) + The SPI could be used as the 2nd I/O port And if one wants to play more the this part or other pics search on Google for "Curiosity Board by Microchip" -pete