The full schematic for the clock is complete. Now I’m starting the layout of the PCB. This is going to be fun! Nearly 200 components to place, most of them in precise locations. I’m using a spreadsheet to calculate the exact coordinates and angles of the parts. And I’m going to manually route the traces myself. I’m hoping to put all the traces on the back side of the board except the 14 I/O lines for the LEDs will be on the front side in concentric circles among the LEDs.
At this point I got the test circuit completely operational and the test software working good. Now it is time to start on the clock itself.