Consider changing MCU to ESP32? #30
Description
It would be really cool to consider the ESP32 for this project! I think Seeed even makes a $5 drop-in replacement you could use!
Wifi/BT built-in opens a lot of doors! You could fine tune the color temp or brightness remotely from your phone, integrate the lamp with Google/Siri/Alexa, create schedules, auto-off timers, over-the-air updates, and Home Assistant automation!
As @DimaVIII pointed out, this would solve issue #5 with the LEDC peripheral, since we have an 80MHz clock we can divide by however many bits of PWM duty resolution we want.
The ESP32-CAM boards could be something to consider for an all-in-one solution for the color temperature matching feature. It might need a lot of calibration though!
Thanks for considering and for this awesome project (and entertaining videos)!