Homebrew LED Matrix Clock

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Uploaded by on Jun 8, 2010

14x7 LED Matrix, displaying the time, day, date and temperature.
16F877 pic microcontroller, 2x ULN2004 Transistor arrays, DS1307 RTC & LM35 temp sensor.

Piece of paper over the leds to diffuse them as to bright for camera.

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  • @Tuxdiver pretty good little chip, comunicate with I2C, has a battery backup input from a CR2032 cell so you can turn off and time is kept, the main reason i use it

  • Nice, compact setup! I have to take a look at the DS1307 for own projects...

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