L298N模块使用

2023-09-13 01:37| 来源: 网络整理| 查看: 265

模块引脚说明如下：

注：已经内置5V供电，不必从外面再接5V输入

输入信息：

ENA和ENB字样的针脚分别连接支持PWM输出的任意数字口，并在程序中通过AnalogWrite()语句实现速度快慢的调节。

电路连接示意图：

程序：

/* ***************************************************************** * ***************************************************************** * * * *****************************************************************/ #define BLINKER_WIFI #include #define STOP 0 #define FORWARD 1 #define BACKWARD 2 #define TURNLEFT 3 #define TURNRIGHT 4 //电机控制引脚 #define LEFT_MOTOR1 D1 #define LEFT_MOTOR2 D2 #define RIGHT_MOTOR1 D3 #define RIGHT_MOTOR2 D4 #define LEFT_ENA D7 #define RIGHT_ENB D8 char auth[] = "2168d525043de"; char ssid[] = "000"; char pswd[] = "000"; // 新建组件对象 BlinkerButton Button0("btn-abc"); BlinkerButton Button1("btn-abd"); BlinkerButton Button2("btn-abe"); BlinkerButton Button3("btn-abf"); BlinkerButton Button4("btn-abg"); BlinkerButton Button5("btn-all"); BlinkerNumber Number1("num-abc"); int cmd = 1; int counter = 0; // 按下按键即会执行该函数 void button0_callback(const String & state) { BLINKER_LOG("get button0 state: ", state); digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN)); } void button1_callback(const String & state) { BLINKER_LOG("get button1 state: ", state); motor_run(1); Button1.print("on"); Button2.print("off"); Button3.print("off"); Button4.print("off"); } void button2_callback(const String & state) { BLINKER_LOG("get button2 state: ", state); motor_run(2); Button1.print("off"); Button2.print("on"); Button3.print("off"); Button4.print("off"); } void button3_callback(const String & state) { BLINKER_LOG("get button3 state: ", state); motor_run(3); Button1.print("off"); Button2.print("off"); Button3.print("on"); Button4.print("off"); } void button4_callback(const String & state) { BLINKER_LOG("get button4 state: ", state); motor_run(4); Button1.print("off"); Button2.print("off"); Button3.print("off"); Button4.print("on"); } void button5_callback(const String & state) { BLINKER_LOG("get button5 state: ", state); Button1.print("off"); Button2.print("off"); Button3.print("off"); Button4.print("off"); motor_run(0); digitalWrite(LEFT_MOTOR1, HIGH); digitalWrite(LEFT_MOTOR2, HIGH); digitalWrite(RIGHT_MOTOR1, HIGH); digitalWrite(RIGHT_MOTOR2, HIGH); } // 如果未绑定的组件被触发，则会执行其中内容 void dataRead(const String & data) { BLINKER_LOG("Blinker readString: ", data); counter++; Number1.print(counter); } void setup() { // 初始化串口 Serial.begin(115200); BLINKER_DEBUG.stream(Serial); // 初始化有LED的IO pinMode(LED_BUILTIN, OUTPUT); digitalWrite(LED_BUILTIN, HIGH); pinMode(LEFT_MOTOR1, OUTPUT); pinMode(LEFT_MOTOR2, OUTPUT); pinMode(RIGHT_MOTOR1, OUTPUT); pinMode(RIGHT_MOTOR2, OUTPUT); pinMode(LEFT_ENA,OUTPUT); pinMode(RIGHT_ENB,OUTPUT); // 初始化blinker Blinker.begin(auth, ssid, pswd); Blinker.attachData(dataRead); motor_run(STOP); Button0.attach(button0_callback); Button1.attach(button1_callback); Button2.attach(button2_callback); Button3.attach(button3_callback); Button4.attach(button4_callback); Button5.attach(button5_callback); } /* ***************************************************************** * 电机控制函书 * * *****************************************************************/ int highSpeed = 200; int lowSpeed = 100; void motor_run(int cmd) { switch(cmd) { case FORWARD: Serial.println("FORWARD"); //输出状态 analogWrite(LEFT_ENA,highSpeed); digitalWrite(LEFT_MOTOR1, LOW); digitalWrite(LEFT_MOTOR2, HIGH); analogWrite(RIGHT_ENB,highSpeed); digitalWrite(RIGHT_MOTOR1, LOW); digitalWrite(RIGHT_MOTOR2, HIGH); break; case BACKWARD: Serial.println("BACKWARD"); //输出状态 digitalWrite(LEFT_MOTOR1, HIGH); digitalWrite(LEFT_MOTOR2, LOW); digitalWrite(RIGHT_MOTOR1, HIGH); digitalWrite(RIGHT_MOTOR2, LOW); break; case TURNLEFT: Serial.println("TURN LEFT"); //输出状态 analogWrite(LEFT_ENA,lowSpeed); analogWrite(RIGHT_ENB,highSpeed); digitalWrite(LEFT_MOTOR1, LOW); digitalWrite(LEFT_MOTOR2, HIGH);//C digitalWrite(RIGHT_MOTOR1, LOW); digitalWrite(RIGHT_MOTOR2, HIGH); break; case TURNRIGHT: Serial.println("TURN RIGHT"); //输出状态 analogWrite(LEFT_ENA,highSpeed); analogWrite(RIGHT_ENB,lowSpeed); digitalWrite(LEFT_MOTOR1, LOW); digitalWrite(LEFT_MOTOR2, HIGH); digitalWrite(RIGHT_MOTOR1, LOW);//C digitalWrite(RIGHT_MOTOR2, HIGH); break; case STOP: default: Serial.println("STOP"); //输出状态 analogWrite(LEFT_ENA,1); analogWrite(RIGHT_ENB,1); digitalWrite(LEFT_MOTOR1, LOW); digitalWrite(LEFT_MOTOR2, LOW); digitalWrite(RIGHT_MOTOR1, LOW); digitalWrite(RIGHT_MOTOR2, LOW); break; } } void loop() { Blinker.run(); }

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