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LED clock modification
WS2812b LEDs
WS2812b RGB LED close-up
WS2812b datasheet
WS2812b protocol software implementation
STM32F103 blue pill dev board
WS2812b protocol hardware implementation
development setup
WS2812b test implementation
Maxim DS1307 RTC
using the RTC module
square wave output of RTC module
STM32F103 RTC
blue pill RTC
brightness sensor using photo-resistor
original wall clock
modified wall clock
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