Schematics 0:34, Code 1:34.
A digital clock using one Tiny RTC module (DS1307 I2C Real Time Clock and 24C32 EEPROM with backup battery holder and pads for a DS18B20 temperature sensor), Arduino Nano and the Recycled DVD 7 Segment LED Display. Pin-out for the mini DVD player 7 segment LED display can be found here:
https://youtu.be/SIwdiQYyt2Q
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Thanks for watching.