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