蓝猫淘气

Matrix Clock

Overview

First, here's the picture:

I saw the electronic clock made by the B station HACK laboratory (please refer to the original UP release for specific parameters). I just happened to have a few dot matrix modules (LOM-13881SRB) and an ESP8266 module, but no MAX7219.
However, I have a few 74HC595 and 74HC138, which can also drive LED dot matrix, and some dot matrix screens on the market also use this solution. Then I found the clock chip PCF8563,
which may not be as accurate as DS3231, but with network time calibration, it is not bad for that little accuracy, so I made this.
Among them, the photoresistor automatically adjusts the brightness function, which does not work well on this hardware according to the original author's method, so it is not used. The debugged source code is provided in the attachment for learning reference only.

Design Files

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Update:2025-05-08 15:27:49

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