https://github.com/SpenceKonde/megaTinyCore
:computer-chip--2-: ATtiny412 (tinyAVR 1-series – minimal)
Why use it:
Ultra-minimal → perfect for simple input devices (button, sensor trigger).
Key Features
- 8-bit AVR
- Very low pin count (8 pins)
- ADC, basic timers
- Cheap & fast to prototype
Pinout Notes
- One pin used for UPDI
- Limited GPIO → plan carefully
Programming
Datasheet
Arduino Board Manager
:computer-chip--2-: ATtiny1624 (tinyAVR 2-series)