Re: Alpha Clock 5 – GPS support

Home Evil Mad Scientist Forums Clock Kits Alpha Clock 5 – GPS support Re: Alpha Clock 5 – GPS support


I decided to use the upper right dot, at least as a temporary indicator.  Easier than figuring out how to start/stop the blinking colon, but I do like that idea the best as it give and immediate and continuous indication that the clock’s time is accurate.

The upper right dot is turned on when the clock’s time & date are updated, then turned off again the next time a valid GPRMC message is received; usually this is about 1 second later.  The code is designed such that it tries to do the GPS update at the beginning of each minute if it can.  If the GPS is working properly, you should see a the LED come on at the top of each minute, then go off again 1 second later.