Matrix clock with alarm

   At begin of this year I find article Mini led clock and I test using changed sketch (mini_clock_1a.ino) and schematic

   Also, I made 2 movie:
- clock on matrix led display with MAX7219

- clock on matrix led display with MAX7219 (2)

   Now, I add alarm feature, schematic is now

   Using mini_clock_1_2.ino sketch now you can see data and if alarm is activate by pushing second button (if alarm is deactivate, on screen not apear text with them).
    I made matrix mini clock with alarm movie when you can see how clock work