\#\# Light Theremin a. How do you produce a tone depending on the light perceived by the microcontroller (Arduino UNO in our case). b. From the experiment change 5 volts to 3.3 volts? Is there a change in sound? Why? c. How does the "map ( ) " function in this experiment? d. Individually suggest electrical and mechanical standards or codes and local or international applicable in this experiment. Cite source/s