You are given $$ Arauino Doaras connected over SPI. You are supposed to control brightness of $2$ LED connected to Arduino#$2$ by using $2$ potentiometers connected to Arduino#$1$ board. Boards are going to communicate over SPI protocol.

Pot$1$ is connected to pin A$1$ and going to control Led$1.$ Pot$2$ is connected to pin A$0$ and going to control ted$2.$

Hint: Slave device should implement interrupt routine to get the data sent from Master. Data is stored in SPDR$.$

a$.$ Explain how you should connect these $2$ boards, $($e$.$g$.$ pins to be used for SPI, and LEDs and any other settings $($Master$/$Slave$)).$

$(05$ pts$)$

b$.$ Write code for both Arduino boards. You can use any library function in your code. $(30$ pts$)$ Answer A and B with explanation