Summary： A description of my next share project.
My upcoming share project is a digital analog clock. The design uses a circle of 60 LEDs to indicate minutes and 24 LEDs to represent hours and half-hours. For the minutes, there are six groups of ten LEDs each, managed by two 4017 counters: one sequences through the LEDs, while the other selects which group is active—covering ranges such as 0 to 9, 10 to 19, 20 to 29, 30 to 39, 40 to 49, and 50 to 59. The hours use 6 LEDs in four groups: 12:30–3:00, 3:30–6:00, 6:30–9:00, and 9:30–12:00. I’m currently testing the design on a breadboard to verify its timekeeping accuracy, focusing on implementing the half-hour increments. Although I have a promising circuit for this, I am waiting on a part before I can test it fully.
Using 84 LEDs on a breadboard isn’t practical or necessary for testing the concept. To test minutes, I only need 10 LEDs plus 6 for the minute groups; for hours, 6 LEDs and an additional 4 for the hour groups suffice.
The design is tested on a breadboard, and the time displayed is 9:20. Half-hour increments are not included in this breadboard design.
This is what my current PC design looks like in KiCad.
I anticipate will have this available as a share project in early 2026.
