Hello to all members. Matt I find the updated board design very interesting. Where can I get more information ? I would like to build one for my own 468-DC. Thank you ! Claude VA2 HDD

Attached is the .ZIP file containing the board gerbers which are ready to send to your favorite manufacturer, the schematic, a board layout, the basic code and compiled files for the ATTINY1614. I use BASCOM-AVR which will also need the ATTINY add on to work with this Microcontroller. It is still a work in progress on the DST commands for the clock to automatically roll over at 2 AM local time, didn't have it quite right this last weekend but the DST will fire at midnight UTC. The debug and programming cable is the FTDI TTL-232R-3V3-A , available here: https://www.mouser.com/ProductDetail/FTDI/TTL-232R-3V3-AJ?qs=Xb8IjHhkxj4CJ2SCCMHPLQ%3D%3D&mgh=1&gclid=CjwKCAiA3aeqBhBzEiwAxFiOBgYjMLhmuv0iJkOpqTh3Ee4dk2o-hScWwsXCGl9n9z6h1PB6HHof6hoCUCcQAvD_BwE The board also has an UPDI interface on the underside if you have a pogo pin style UPDI programmer. I have also a couple of Youtube videos about the repair of the 468-DC and installation of the GPS to GOES converter: https://youtu.be/k7Z9GSCHsgI?si=998E9i2l6UWnX2H1 https://youtu.be/v5uiHYAW9cc?si=EqQstW1JNkFPdJm2 Special Thanks to Paul Swed, and Andrew Novick of NIST. On Tue, Nov 7, 2023 at 3:16 PM va2hdd--- via time-nuts < time-nuts@lists.febo.com> wrote: > Hello to all members. > > Matt I find the updated board design very interesting. Where can I get > more information ? I would like to build one for my own 468-DC. > > Thank you ! > > Claude VA2 HDD > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com >

Forgot to mention that the GPS module you use needs to be programmed to provide only the $GPZDA NMEA string, Serial baud at 9600, N, 8, 1 and the 1 PPS signal needs to be changed to a 100 PPS instead. Here is the config file that works on a UBLOX LEA-5T module that can be found off eBay. https://www.ebay.com/itm/134203047949 The clock will be quite a bit off on first power up as the leap seconds I understand only come around every 15 minutes. Also after a good GPS sync my clock seems to lag a WWVB clock by about 700mS, my guess is GPS is UT1 and WWVB is UTC but I am not positive there.