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Add "Almost precise" clock

Ewaryst
2026-04-11 07:22:22 +00:00
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%22Almost-precise%22-clock.md Normal file

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This is the page about "Almost precise" clock project.
The reason for colling it "Almost" precise comes form the fact that it utilizes WCMCU-28128-24 addressable led ring with 24 addressable diodes. A simple mapping is used to display minutes and seconds on this clock. You will not be able to tell precise time down to a second or even minute but it works very well in everyday life to indicate time flow.
Clock uses STM32F103 controller from ST Microelectronics (Blue Pill) and is powered via USB port. Time keeping is done using external RTC clock - ds1307.
USB acts also as communication interface, allowing user to change several parameters in the clock, like the colour of diodes indicating hours, minutes and seconds as well as the background colour of the display.