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ST7789_Watch_stm

Analog Watch/Clock with STM32 RTC and ST7789 IPS

YouTube videos

https://youtu.be/35Z0enhEYqM

https://youtu.be/jFGDFuLhdMc

Features

  • STM32 internal RTC with backup battery was used
  • a few color clock faces taken from the internet
  • one clock face in 240x240 pixel resolution compressed to 4-bits takes only 29K of memory so even 2 could fit in STM32 memory
  • watch hands are are vector based
  • no floating-point arithmetic and slow trigonometric functions were used

Connections:

LCD pin LCD pin name Arduino
#01 GND GND
#02 VCC 3.3V
#03 SCL PA5
#04 SDA PA7
#05 RES PA0 or any digital
#06 DC PA1 or any digital
#07 BLK NC

If you find it useful and you want to buy me a coffee or a beer:

https://www.paypal.me/cbm80amiga

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Analog Watch/Clock with STM32 RTC and ST7789 IPS

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  • C 98.8%
  • C++ 1.2%