20180123 arduino condensatore breadboard01

I propose a new measurement experiment using Arduino, working as DAQ (data acquisition instrument). I proceed as described in the articles Arduino and Excel with PLX-DAQ and Voltage divider measurements with PLX-DAQ: I mount my circuit on breadboard powered by the Arduino board at 5V. I propose to analyze the charge and discharge of a capacitor and collect data in a Excel spreadsheet.
In this lab test, I use the following devices: 1 capacitor 3300µF (electrolytic), 1 resistor 1kΩ,1 switch, 5V Arduino supply.

I write the Arduino sketch reported below.

#define sensorPin A0 // select the input pin for the potentiometer
int sensorValue = 0; // variable to store the value coming from the sensor 0-1023
float sensorVoltage = 0; // variable to store the voltage coming from the sensor 0-5V
int cont = 0;

void setup() {

void loop() {
  // read the value from the sensor
  sensorValue = analogRead(sensorPin);
  // calculate voltage
  sensorVoltage = sensorValue*5.0/1023.0;
  // send value to USB
  // delay 100ms

The figure below shows a measurement test with data collection in Excel and a 2-Dline type graph to represent voltage measured on capacitor.

20180123 arduino condensatore breadboard02