Items for the circuit diagram to be created using Arduino Uno and the Wokwi website are as follows:

$1-$ Temperature adjustment will be made using a potentiometer.

$2-$ A standard $16$x$2$ LCD will be used, and I$2$C will not be employed.

$3-$ A Blue LED will be used for the fan, and a Red LED for the heater.

$4-$ User$-$set values for the fan and heater will be entered using a $4$x$4$ keypad, and these values will be displayed on the LCD.

$4-(2)-$ Pressing button $($A$)$ on the keypad will prompt the user to enter and modify the heater set value, which will also be displayed on the LCD.

$4-(3)-$ Pressing button $($B$)$ on the keypad will prompt the user to enter and modify the fan set value, which will also be displayed on the LCD.

$4-(4)-$ After pressing buttons A or B$,$ pressing $(*)$ will save and lock the values to prevent deletion.

$4-(5)-$ The temperature value adjusted by the potentiometer will be displayed on the LCD.

$5-$ Two outputs will be used for the fan and heater. $($Represented by a Blue LED for the fan and a Red LED for the heater$).$

$6-$ Hysteresis control will be implemented for the fan and heater, with a bandwidth of $10\%.$

$7-$ The heater temperature must be greater than the fan temperature. Additionally, to prevent simultaneous or consecutive operation of both outputs, there must be at least a $3-$degree difference between their operating ranges.

$8-$ User$-$set values will not be erased when power is cut. EEPROM will be used for this purpose.

$9-$ Once heater and fan set values are entered, if the temperature adjusted by the potentiometer is below $50$ degrees, the heater $($Red LED$)$ will operate, and if it's above $55$ degrees, the fan $($Blue LED$)$ will operate. $($For example purposes$).$

$10-$ Briefly explain the purpose of each line of code.

$11-$ Share the contents of the sketch.ino, diagram.json, and libraries.txt files for the application.