Attiny85 adaptation of Ian Wraith's 2.4GHz Downconverter

An adaption of this project for the Attiny85 microcontroller.

Other than the major differences in programming from the original STM32 MCU, this adaptation is functionally the same.

ATTINY85	ADF4350	Purpose
PB3	LE	z
PB2	CLK	SPI Clock
PB1	DATA	SPI Data line
PB5	LD	Lock Detection
PB4		Status LED+ (anode)

Here is a schematic to visualize the connection between the ATTiny85 and the ADF4350:

**(NOTE: Wire to PB5 should be connected to PB0 instead)