#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_MPU6050.h>

const int ledPins[] = {18, 19, 32, 33, 25, 26, 27};
const int numLeds = 7;

Adafruit_MPU6050 imu;

void setup() {
  Serial.begin(115200);
  Wire.begin();
  imu.begin();
  imu.setAccelerometerRange(MPU6050_RANGE_2_G);
  Serial.println("Visual accelerometer ready");
  
  for (int i = 0; i < numLeds; i++) {
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], LOW);
  }
}

void loop() {
  sensors_event_t accel, gyro, temp;
  imu.getEvent(&accel, &gyro, &temp);
  
  float ax = accel.acceleration.x;
  int ledIndex = map(ax * 10, -100, 100, 0, numLeds - 1);
  ledIndex = constrain(ledIndex, 0, numLeds - 1);
  
  for (int i = 0; i < numLeds; i++) {
    digitalWrite(ledPins[i], (i == ledIndex) ? HIGH : LOW);
  }
}