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For this proyect I used Picaxe microcontrollers. This clock involves all the types of comunication between MCUs i know to use. It includes: i2c, infrared, paralel, 1 wire ...
To begin I used the DS1307 RTC to provide the hour to all the other MCUs. It is pretty esy to use it if you know how to ...
A picaxe chip reads it (via i2c), transforms the data to bin and sends it via an infrared link ( I used a small acrillic bar to prove ...
Next, another picaxe receives the infrared data, changes its format to send it to the MAX7219 driver (digit per digit) to do this i thransformed the number to ...
The max7219 driver does a lot of stuff ( in my opinion) it is resumed here: it recieves the four digits and then send bit by bit to ...
The amazing thing is that all this process takes less than 2 secs. I made the digits by myself, I know that they are not the best displays ...
MAX7219 - 8 Digit LED Display Module Driver for ESP8266by TrackerJ
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