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+ Average Clock Mod 1 + Six separate DS1307s using three MAX7219's shown on red displays. + Each clock is individually adjustable by Minutes and Hours. + A fourth MAX7219 drives a seventh, larger green display that shows the + average time of all six clocks. + + Average time can be hidden; it implements a button + which, when pressed, displays this value. User configuration for this + function is via a configuration switch. When the switch is LOW, average time displays + normally. When HIGH, average time is displayed only when the button attached + to digital pin 4 is depressed. An automatic adjustment for LED intensity + based on ambient lighting is included. + + This version eliminates all the Hour and Minute adjustment buttons except + for two, which control all of the clocks. Setup is performed in three steps: + + 1. The Master Reset button is pressed, zeroing all six clocks. + 2. The Hour and Minute adjust buttons add hours and minutes to all clocks + simultaneously. + 3. The Randomize button will add or remove up to 5 minutes randomly from + each clock. + + + by Michael B. LeBlanc + NSCAD University + http://generaleccentric.net