DIY 远程点火器

注：

此方案不是最佳方案，可以使用ESP12F等直接对IO控制，因为手头只有01S且想加入1602（12F可以使用 I2C连接）故用NANO+ESP

原理图：

实物图：

ESP01S代码：

/*
尊重原创，转载请注明出处！ 
本文作者：OhWMF 链接:https://www.ohwmf.cn/p/389.html
*/
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
WiFiClient espClient;
PubSubClient  client(espClient);
#ifndef AP_CONFIG
String UID = "Firework_Fire_001";
#endif
const char* UserName = "xxxxxx";
const char* PassWord = "xxxxxxxxxxxxx";
bool subTopicCenterFlag = false;
unsigned long bemfa_mqtt_current_millis;
unsigned long bemfa_mqtt_last_re_millis = 0;
void reConnect() {
 if (!client.connected()) {
   if(client.connect(UID.c_str(),UserName,PassWord)){
     Serial.println("connected");
     subTopicCenterFlag = true;
    } else {
    bemfa_mqtt_current_millis = millis();
    if (bemfa_mqtt_current_millis - bemfa_mqtt_last_re_millis > 2000) {
      bemfa_mqtt_last_re_millis = millis();
      Serial.println(" try again reconnect");
    }
    }
 }
}

#include <WiFiManager.h>

WiFiServer server(80);

void subMqttTopicCenter() {
  if(subTopicCenterFlag == true){
      subTopicCenterFlag = false;

    Serial.print("sub topic:");Serial.println(String("fire"));
    client.subscribe(String("fire").c_str());delay(15);

}}

void callback(char* rtopic, byte* payload, unsigned int length) {
 String msg = "";
 String topic = rtopic;
 for (int i = 0; i < length; i++) {
    msg += (char)payload[i];
 }
  if (topic == "fire") {
    Serial.println(msg);
  }
 msg = "";
 topic = "";
 }


void setup(){
  client.setServer("xxxxxxxxxxx", 1883);
  client.setCallback(callback);
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFiManager wm;
  bool res;
  res=wm.autoConnect();
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop(){
  reConnect();
  client.loop();   subMqttTopicCenter();
  if (Serial.available() > 0) {
    client.publish( String("back").c_str() , String(Serial.readString()).c_str());
    Serial.println("A message has been published");

  }
}

NANO 代码：

/*
尊重原创，转载请注明出处！ 
本文作者：OhWMF 链接:https://www.ohwmf.cn/p/389.html
*/
#include <Arduino.h>
char cmd[13];
bool valid_cmd = false;
long previousTime = 0;
long interval = 30000;
void setup()
{
      Serial.begin(115200);
      pinMode(A0, OUTPUT);
      digitalWrite(A0, LOW);
      pinMode(A1, OUTPUT);
      digitalWrite(A1, LOW);
      pinMode(A2, OUTPUT);
      digitalWrite(A2, LOW);
      pinMode(A3, OUTPUT);
      digitalWrite(A3, LOW);
      pinMode(A4, OUTPUT);
      digitalWrite(A4, LOW);
      pinMode(A5, OUTPUT);
      digitalWrite(A5, LOW);
      pinMode(A6, OUTPUT);
      digitalWrite(A6, LOW);
      pinMode(A7, OUTPUT);
      digitalWrite(A6, LOW);
      Serial.println("ready");
}
void loop()
{
      unsigned long currentTime = millis();
      if (currentTime - previousTime > interval)
      {
            previousTime = currentTime;
            Serial.println("online");
      }
      int i;
      if (Serial.available() > 0)
      {
            for (i = 0; i < 13; i++)
            {
                  cmd[i] = '\0';
            }
            for (i = 0; i < 12; i++)
            {
                  if (Serial.available() > 0)
                  {
                        cmd[i] = Serial.read();
                        delay(1);
                  }
                  else
                  {
                        break;
                  }
            }
            valid_cmd = true;
      }
      if (valid_cmd)
      {
            if (0 == strncmp(cmd, "fire1", 5))
            {
                  digitalWrite(A0, HIGH);
                  delay(2000);
                  digitalWrite(A0, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "fire2", 5))
            {
                  digitalWrite(A1, HIGH);
                  delay(2000);
                  digitalWrite(A1, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "fire3", 5))
            {
                  digitalWrite(A2, HIGH);
                  delay(2000);
                  digitalWrite(A2, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "fire4", 5))
            {
                  digitalWrite(A3, HIGH);
                  delay(2000);
                  digitalWrite(A3, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "fire5", 5))
            {
                  digitalWrite(A4, HIGH);
                  delay(2000);
                  digitalWrite(A4, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "fire6", 5))
            {
                  digitalWrite(A5, HIGH);
                  delay(2000);
                  digitalWrite(A5, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "fire7", 5))
            {
                  digitalWrite(A6, HIGH);
                  delay(2000);
                  digitalWrite(A6, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "fire8", 5))
            {
                  digitalWrite(A7, HIGH);
                  delay(2000);
                  digitalWrite(A7, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "fireall", 7))
            {
                  digitalWrite(A0, HIGH);
                  delay(2000);
                  digitalWrite(A0, LOW);
                  digitalWrite(A1, HIGH);
                  delay(2000);
                  digitalWrite(A1, LOW);
                  digitalWrite(A2, HIGH);
                  delay(2000);
                  digitalWrite(A2, LOW);
                  digitalWrite(A3, HIGH);
                  delay(2000);
                  digitalWrite(A3, LOW);
                  digitalWrite(A4, HIGH);
                  delay(2000);
                  digitalWrite(A4, LOW);
                  digitalWrite(A5, HIGH);
                  delay(2000);
                  digitalWrite(A5, LOW);
                  digitalWrite(A6, HIGH);
                  delay(2000);
                  digitalWrite(A6, LOW);
                  digitalWrite(A7, HIGH);
                  delay(2000);
                  digitalWrite(A7, LOW);
                  Serial.println("ok");
            }
            else if (0 == strncmp(cmd, "firealldelay", 12))
            {
                  digitalWrite(A0, HIGH);
                  delay(2000);
                  digitalWrite(A0, LOW);
                  digitalWrite(A1, HIGH);
                  delay(2000);
                  digitalWrite(A1, LOW);
                  digitalWrite(A2, HIGH);
                  delay(2000);
                  digitalWrite(A2, LOW);
                  digitalWrite(A3, HIGH);
                  delay(2000);
                  digitalWrite(A3, LOW);
                  digitalWrite(A4, HIGH);
                  delay(2000);
                  digitalWrite(A4, LOW);
                  digitalWrite(A5, HIGH);
                  delay(2000);
                  digitalWrite(A5, LOW);
                  digitalWrite(A6, HIGH);
                  delay(2000);
                  digitalWrite(A6, LOW);
                  digitalWrite(A7, HIGH);
                  delay(2000);
                  digitalWrite(A7, LOW);
                  Serial.println("ok");
            }
            valid_cmd = false;
      }
      delay(10);
}