Write a sketch using Arduino IDE and include the full code as a text in your solution.

Design and simulate the hardware circuit using Proteus. Then, include the following images in your solution:

a$.$ The design of your circuit before running your simulation.

b$.$ All states of your simulation showing all possible cases.

Question $1$: We want to design an embedded system using Arduino Uno board that will measure the light level with LDR sensor and four red LEDs as illustrated in Figure $1.$

We will have five possible cases:

If the read value from LDR sensor is $0,$ all LEDs will be OFF.

If the read value from LDR sensor is larger than $0$ and less than or equal $255,$ only the first LED $($pin$7)$ will be ON$.$

If the read value from LDR sensor is larger than $255$ and less than or equal $511,$ only the first LED $($pin$7)$ and second LED $($pin$6)$ will be ON$.$

If the read value from LDR sensor is larger than $511$ and less than or equal $767,$ only the first LED $($pin$7),$ second LED $($pin$6),$ and third LED $($pin$5)$ will be ON$.$

If the read value from LDR sensor is larger than $767$ and less than or equal $1023,$ all LEDs will be ON$.$

Notes:

Add a delay of $100$ ms at the end of the loop function.

In Proteus, pick up the "Torch and Light Dependent Resistor" as shown in Figure $2$ to simulate the LDR and light intensity.