我正在尝试使用 NodeMCU 和 NEMA17 电机构建自动电动百叶窗，但是，由于到目前为止我已经烧毁了两个 NodeMCU 板，所以肯定是不对的。该电路会工作一段时间（经常失去 wifi 连接），然后在运行几个小时后它会变热，我无法再使用我的电脑连接到它。
下图显示了我的设置和我用来控制它的代码。有人可以帮助我，如果他们发现我的设置有任何错误，请告诉我吗？
代码：全选/*****************************************************
* Date: 9 july 2018
* Written by: Usman Ali Butt
* Property off: microcontroller-project.com
* ***************************************************/
#include

const char* ssid = "MissionControl";
const char* password = "Apollo11";

int Step = 5; //D1 of Nodemcu--Step of stepper motor driver
int Dir  = 4; //D2---D4 of Nodemcu--Direction of stepper motor driver
#define sleepPin 14 //D5
#define M2 12 //D6
#define M1 13 //D7
WiFiServer server(80);

void setup() {
  Serial.begin(115200);
  delay(10);
pinMode(Step, OUTPUT); //Step pin as output
pinMode(Dir,  OUTPUT); //Direcction pin as output
pinMode(sleepPin, OUTPUT);
pinMode(M2, OUTPUT);
pinMode(M1, OUTPUT);
digitalWrite(Step, LOW); // Currently no stepper motor movement
digitalWrite(Dir, LOW);  
  digitalWrite(sleepPin, LOW);
  digitalWrite(M2, HIGH);
  digitalWrite(M1, HIGH);
  

  //digitalWrite(enablePin, LOW);

  // Connect to WiFi network
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");

  // Start the server
  server.begin();
  Serial.println("Server started");

  // Print the IP address on serial monitor
  Serial.print("Use this URL to connect: ");
  Serial.print("http://");    //URL IP to be typed in mobile/desktop browser
  Serial.print(WiFi.localIP());
  Serial.println("/");

}

void loop() {
   
  // Check if a client has connected
  WiFiClient client = server.available();
  if (!client) {
    return;
  }

  // Wait until the client sends some data
  Serial.println("new client");
  while(!client.available()){
    delay(1);
  }

  // Read the first line of the request
  String request = client.readStringUntil('\r');
  Serial.println(request);
  client.flush();

  // Match the request
  int i=0;
  int value = LOW;
  
  if (request.indexOf("/Command=forward") != -1)  { //Move 50 steps forward
    digitalWrite(sleepPin, HIGH);
    digitalWrite(Dir, HIGH); //Rotate stepper motor in clock wise direction
          for( i=1;i<=89600;i++){
          digitalWrite(Step, HIGH);
          delay(1);
          digitalWrite(Step, LOW);
          delay(1);}
    value = HIGH;
    digitalWrite(sleepPin, LOW);
  }
  
  if (request.indexOf("/Command=backward") != -1)  { //Move 50 steps backwards
   digitalWrite(sleepPin, HIGH);
    digitalWrite(Dir, LOW); //Rotate stepper motor in anti clock wise direction
          for( i=1;i<=96000;i++){
          digitalWrite(Step, HIGH);
          delay(1);
          digitalWrite(Step, LOW);
          delay(1);}
    value = LOW;
    digitalWrite(sleepPin, LOW);
  }

  // Return the response
  client.println("HTTP/1.1 200 OK");
  client.println("Content-Type: text/html");
  client.println(""); //  do not forget this one
  client.println("");
  client.println("");
  client.println("

Stepper motor controlled over WiFi

");
  client.print("Stepper motor moving= ");

  if(value == HIGH) {
    client.print("Forward");
  } else {
    client.print("Backward");
  }
  client.println("

");
  client.println("Forward ");
  client.println("Backward
");  
  client.println("");
  delay(1);
  Serial.println("Client disonnected");
  Serial.println("");

}