릴레이와 esp-01 결합된 모듈입니다.
참고 : 동작이 되지 않으면, 줄번 호 4번째 줄 #define RELAY 2 를 0으로 합니다.
시리얼 모니터에서 동작 확인
서버 IP로 접속 후 클라이언트가 접속되었습니다.
클라이언트에서 ON 버튼을 실행했을 때
참고: 업로드에러가 발생하면
esp-01모듈을
뺐다 다시 끼운다.
시리얼 모니터에서 동작이 확인되면
ESP-01S에 장착했을 떼, 릴레이 ON, OFF되 소리가 난다.
source code
#include <ESP8266WiFi.h>
const char* ssid = "IOT999";
const char* password = "kbs48752";
#define RELAY 2
WiFiServer server(80);
void setup(){
Serial.begin(115200);
pinMode(RELAY,OUTPUT);
digitalWrite(RELAY, LOW);
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");
server.begin();
Serial.println("Server started");
Serial.print("Use this URL to connect: ");
Serial.print("https://");
Serial.print(WiFi.localIP());
Serial.println("/");
}
void loop(){
WiFiClient client = server.available();
if (!client){
return;
}
Serial.println("new client");
while(!client.available()){
delay(1);
}
String request = client.readStringUntil('\r');
Serial.println(request);
client.flush();
int value = LOW;
if (request.indexOf("/RELAY=ON") != -1){
Serial.println("RELAY=ON");
digitalWrite(RELAY,LOW);
value = LOW;
}
if (request.indexOf("/RELAY=OFF") != -1){
Serial.println("RELAY=OFF");
digitalWrite(RELAY,HIGH);
value = HIGH;
}
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println(""); // dies ist ein Muss
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.println("<meta name='viewport' content='width=device-width, initial-scale=1'>");
client.println("<head><title>ESP8266 RELAY Control</title></head>");
client.println("<style>");
client.println("* {text-align: center; font-family: Consolas;}");
client.println("");
client.println(".container {position: absolute; top:50%;");
client.println("left: 50%; transform: translateX(-50%)translateY(-50%);}");
client.println("");
client.println("a {display: inline-block; width: 50px;");
client.println("color: #FFFFFF; background-color:#275C6B;");
client.println("margin-top: 15px; padding: 10px 20px;");
client.println("text-decoration: none; border-radius:5px;");
client.println("font-weight: 800;}");
client.println("</style>");
client.println("<div class='container'>");
client.println("<div class='inner'>");
client.print("Relay is now: ");
if(value == HIGH){client.print("OFF");}
else{client.print("ON");}
client.println("<br>");
client.println("<a href=\"/RELAY=OFF\">OFF</a>");
client.println("<a href=\"/RELAY=ON\">ON</a>");
client.println("</div>");
client.println("</div>");
client.println("</html>");
Serial.println("");
}
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