#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
#define SCREEN_ADDRESS 0x3C // Change this address if necessary, commonly 0x3D or 0x3C
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
int batteryPin = A0; // Analog pin connected to the potentiometer
int batteryLevel = 0; // Initialize battery level variable
void setup() {
pinMode(batteryPin, INPUT);
Serial.begin(9600);
if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
Serial.println(F("SSD1306 allocation failed"));
for (;;)
;
}
display.display();
delay(2000);
display.clearDisplay();
}
void loop() {
// Read the analog value from the potentiometer
int potValue = analogRead(batteryPin);
// Map the analog value to the battery level (0-100%)
batteryLevel = map(potValue, 0, 1023, 0, 100);
// Clear the previous contents of the display
display.clearDisplay();
// Display battery icon (a simple rectangle)
int batteryWidth = map(batteryLevel, 0, 100, 0, SCREEN_WIDTH / 2);
display.fillRect(SCREEN_WIDTH - batteryWidth, 0, batteryWidth, 10, SSD1306_WHITE);
display.drawRect(SCREEN_WIDTH / 2 - 1, 0, SCREEN_WIDTH / 2 + 1, 10, SSD1306_WHITE);
// Display battery level percentage
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
display.setCursor(0, 15);
display.print("Battery Level: ");
display.print(batteryLevel);
display.print("%");
// Update the display
display.display();
// Print battery level to serial monitor for debugging
Serial.print("Battery Level: ");
Serial.print(batteryLevel);
Serial.println("%");
delay(1000); // Update the display every second
}