ATtiny85 Quadrature Divider

Quadrature encoder divider for the ATtiny85.

Lowers encoder resolution so fast motor encoders can be read on slow devices (e.g. Raspberry Pi).

Pinout
------
                   ATTiny85
                    ------
                  --|o   |--
quad. B in  PB3   --|    |--   PB2  quad. B out
quad. A in  PB4   --|    |--   PB1  quad. A out
                  --|    |--
                    ------

Set DIVIDER in main.c to control how much to divide input.

Building

make build

Building and flashing

Edit Makefile and set PROGRAMMER and PORT

make