Use the temperature sensor to calculate the ambient temperature. Make the use of DC motor and driver. Code your circuit such that when the temperature increases, LED turns ON and DC motor starts spinning. Here, motor will work as a Fan. The circuit connections will be quite tedious. Components required: DC motor Temperature sensor Motor driver LED Jumper wires For coding part, you just have to combine parts of code which we discussed in our session. Use the code from temperature sensor circuit to convert and calculate the temperature. Set the threshold temperature value (example 75 degrees) and use if loop. Inside the loop will be the code for motor and LED.