uln2003驱动步进电机程序

以下是使用Arduino控制ULN2003驱动步进电机的示例程序：

// 定义步进电机引脚
#define IN1 8
#define IN2 9
#define IN3 10
#define IN4 11

// 步进电机步数
const int stepsPerRevolution = 2048;

void setup() {
  // 设置步进电机引脚为输出模式
  pinMode(IN1, OUTPUT);
  pinMode(IN2, OUTPUT);
  pinMode(IN3, OUTPUT);
  pinMode(IN4, OUTPUT);
}

void loop() {
  // 步进电机正转
  for (int i = 0; i < stepsPerRevolution; i++) {
    digitalWrite(IN1, HIGH);
    digitalWrite(IN2, LOW);
    digitalWrite(IN3, LOW);
    digitalWrite(IN4, LOW);
    delay(10);
    digitalWrite(IN1, LOW);
    digitalWrite(IN2, HIGH);
    digitalWrite(IN3, LOW);
    digitalWrite(IN4, LOW);
    delay(10);
    digitalWrite(IN1, LOW);
    digitalWrite(IN2, LOW);
    digitalWrite(IN3, HIGH);
    digitalWrite(IN4, LOW);
    delay(10);
    digitalWrite(IN1, LOW);
    digitalWrite(IN2, LOW);
    digitalWrite(IN3, LOW);
    digitalWrite(IN4, HIGH);
    delay(10);
  }

  // 步进电机反转
  for (int i = 0; i < stepsPerRevolution; i++) {
    digitalWrite(IN1, LOW);
    digitalWrite(IN2, LOW);
    digitalWrite(IN3, LOW);
    digitalWrite(IN4, HIGH);
    delay(10);
    digitalWrite(IN1, LOW);
    digitalWrite(IN2, LOW);
    digitalWrite(IN3, HIGH);
    digitalWrite(IN4, LOW);
    delay(10);
    digitalWrite(IN1, LOW);
    digitalWrite(IN2, HIGH);
    digitalWrite(IN3, LOW);
    digitalWrite(IN4, LOW);
    delay(10);
    digitalWrite(IN1, HIGH);
    digitalWrite(IN2, LOW);
    digitalWrite(IN3, LOW);
    digitalWrite(IN4, LOW);
    delay(10);
  }
}

该程序会使步进电机顺时针旋转一圈，然后逆时针旋转一圈。你可以根据实际需求修改步进电机引脚号和步数。