Or if you want a bit more of a challenge, you might consider the DS3231 https://datasheets.maximintegrated.com/en/ds/DS3231.pdf
This is a full-featured real time clock with a TCXO. It has a programmable 32KHz or 1 pps output. You can trim the frequency digitally via an I2C port in increments of about 0.1 ppm.It comes in a small package but you can get the Chronodot, a breakout version with 0.1" headers from Adafruit and elsewhere: https://www.adafruit.com/product/255 You can use the Chronodot by itself or hook it to an Arduino to access the full range of features. > -- --Jim Harman _______________________________________________ time-nuts mailing list -- firstname.lastname@example.org To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.