# Astro Focuser Controller
Native AVR C firmware for an astronomy electronic focuser prototype.
## Hardware
- Arduino Uno / ATmega328P
- TMC2209 stepper driver (standalone mode)
- Stepper motor
- In/Out momentary buttons
- Home switch input
- Atmel-ICE for programming/debugging
## Current Status
- Timer-driven step generation working
- TMC2209 standalone STEP/DIR/ENABLE control working
- Manual IN/OUT button control working
## Pin Mapping
- STEP: D5
- DIR: D6
- ENABLE: D7
- HOME: D2
- BTN_IN: D8
- BTN_OUT: D9
- STATUS LED: D13
- TEMP ADC: A0
## Notes
This project is being developed in Microchip Studio using native AVR code, not Arduino libraries.