arduino蓝牙小车代码

以下是一个简单的 Arduino 蓝牙小车控制代码，你需要先将蓝牙模块与 Arduino 连接，并确保你已经安装了相应的库文件。

#include <SoftwareSerial.h> //引入蓝牙库文件

SoftwareSerial BTSerial(2, 3); //定义蓝牙串口对象

int motor1Pin1 = 4; //定义电机1引脚1
int motor1Pin2 = 5; //定义电机1引脚2
int motor2Pin1 = 6; //定义电机2引脚1
int motor2Pin2 = 7; //定义电机2引脚2

void setup(){
  pinMode(motor1Pin1, OUTPUT);
  pinMode(motor1Pin2, OUTPUT);
  pinMode(motor2Pin1, OUTPUT);
  pinMode(motor2Pin2, OUTPUT);

  BTSerial.begin(9600); //设置蓝牙串口通信速度为9600
}

void loop(){
  if(BTSerial.available() > 0){ //当蓝牙有数据传输时
    char command = BTSerial.read(); //读取蓝牙传来的数据
    switch(command){
      case 'F': //前进
        digitalWrite(motor1Pin1, HIGH);
        digitalWrite(motor1Pin2, LOW);
        digitalWrite(motor2Pin1, HIGH);
        digitalWrite(motor2Pin2, LOW);
        break;
      case 'B': //后退
        digitalWrite(motor1Pin1, LOW);
        digitalWrite(motor1Pin2, HIGH);
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, HIGH);
        break;
      case 'L': //左转
        digitalWrite(motor1Pin1, HIGH);
        digitalWrite(motor1Pin2, LOW);
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, HIGH);
        break;
      case 'R': //右转
        digitalWrite(motor1Pin1, LOW);
        digitalWrite(motor1Pin2, HIGH);
        digitalWrite(motor2Pin1, HIGH);
        digitalWrite(motor2Pin2, LOW);
        break;
      case 'S': //停止
        digitalWrite(motor1Pin1, LOW);
        digitalWrite(motor1Pin2, LOW);
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, LOW);
        break;
    }
  }
}

你可以使用串口调试助手发送 "F" 以前进，"B" 以后退，"L" 以左转，"R" 以右转，"S" 以停止小车的运动。