Capacitive soil moisture sensor

moisture.ino

#include <SPI.h>
#include <Wire.h>
#include <SFE_MicroOLED.h>

#define PIN_RESET 255
#define DC_JUMPER 0

int i;
int moi = 0;  

MicroOLED oled(PIN_RESET, DC_JUMPER); // Example I2C declaration

void setup()
{
  oled.begin();
  oled.clear(ALL); //will clear out the OLED's graphic memory.
  oled.clear(PAGE); //will clear the Arduino's display buffer.
}

void loop()
{
  oled.clear(PAGE); 
  moi = analogRead(0); 
  oled.setFontType(0);
  oled.setCursor(7, 0);
  oled.print("Moisture: ");
  oled.setFontType(2);
  oled.setCursor(14, 15);
  oled.print(moi);  // Print an integer  
  oled.display(); 
  delay(1000);
}