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ESP8266 Clock with Max7219 Matrix display Date & Time Display and Automatic Light Brightness Adjust - YouTube
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Amazon.com: Stemedu 5PCS 8-Digit 7 Segment MAX7219 Digital Segment Module, Seven Section 8 Bit LED Display Tube for Ar-duino MCU/51/AVR/STM32 for Raspberry Pi ESP8266 Nodemcu : Industrial & Scientific
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