ESP32 Project: Controlling Two AC Bulbs or Loads Over Wi-Fi with Two Relays
Using this Arduino code, we can control AC loads such as AC bulbs or fans using an ESP32 over WiFi, either from a computer, tablet, or mobile phone.
292-Basic code to control the direction of rotation of a motor with two relays
语言: C++
/*
* Control a relay over WiFi using ESP32 to
* turn ON or OFF 2 AC bulbs or 2 fans or other loads using a 2-channel relay
*
* Watch video instructions for this code: https://youtu.be/1zXlV7vmMMg
*
* Full explanation of this code and wiring diagram is available at
* my Arduino Course at Udemy.com here: http://robojax.com/L/?id=62
*
* Written by Ahmad Shamshiri on Feb 23, 2020 at 10:12
* in Ajax, Ontario, Canada. www.robojax.com
*
* Get this code and other Arduino codes from Robojax.com
* Learn Arduino step by step in a structured course with all materials, wiring diagrams and libraries
* all in one place. Purchase My course on Udemy.com http://robojax.com/L/?id=62
*
* If you found this tutorial helpful, please support me so I can continue creating
* content like this.
*
* or make a donation using PayPal http://robojax.com/L/?id=64
*
* This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.
* This code has been downloaded from Robojax.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Copyright (c) 2015, Majenko Technologies
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
* Neither the name of Majenko Technologies nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
int relay1Pin = 12;//define a pin for relay
int relay2Pin = 14;//define a pin for relay
int relay1State = 1;//initial state . 1 ON, 0 OFF
int relay2State = 1;//initial state . 1 ON, 0 OFF
String button1Title1 ="Light ON";
String button1Title2 ="Light OFF";
String button2Title1 ="Buzzer ON";
String button2Title2 ="Buzzer OFF";
#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <ESPmDNS.h>
const char *ssid = "Robojax";
const char *password = "YouTube2020";
WebServer server(80);
void handleRoot() {
//Robojax.com ESP32 2 Relay Control
String HTML ="<!DOCTYPE html>\
<html>\
<head>\
\t\n<title>Robojax ESP32 2 Relay Control</title>\
\t\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\
\n<style>\
\nhtml,body{\t\nwidth:100%\;\nheight:100%\;\nmargin:0}\n*{box-sizing:border-box}\n.colorAll{\n\tbackground-color:#90ee90}\n.colorBtn{\n\tbackground-color:#add8e6}\n.angleButtdon,a{\n\tfont-size:30px\;\nborder:1px solid #ccc\;\ndisplay:table-caption\;\npadding:7px 10px\;\ntext-decoration:none\;\ncursor:pointer\;\npadding:5px 6px 7px 10px}a{\n\tdisplay:block}\n.btn{\n\tmargin:5px\;\nborder:none\;\ndisplay:inline-block\;\nvertical-align:middle\;\ntext-align:center\;\nwhite-space:nowrap}\n";
HTML +="</style>\n\n</head>\n\n<body>\n<h1>Robojax ESP32 Relay Control </h1>\n";
if(relay1State){
HTML +="\t<div class=\"btn\"><a class=\"angleButton\" style=\"background-color:#f56464\" href=\"/control?r1=off\">";
HTML +=button1Title2;
}else{
HTML +="<div class=\"btn\"><a class=\"angleButton \" style=\"background-color:#90ee90\" href=\"/control?r1=on\">";
HTML +=button1Title1;
}
HTML +="</a></div>\n";
if(relay2State){
HTML +="<div class=\"btn\"><a class=\"angleButton\" style=\"background-color:#f56464\" href=\"/control?r2=off\">";
HTML +=button2Title2;
}else{
HTML +="<div class=\"btn\"><a class=\"angleButton \" style=\"background-color:#90ee90\" href=\"/control?r2=on\">";
HTML +=button2Title1;
}
HTML +="</a></div>\n</body>\n</html>\n";
server.send(200, "text/html", HTML);
}//handleRoot()
void handleNotFound() {
//Robojax.com ESP32 Relay Control
String message = "File Not Found\n\n";
message += "URI: ";
message += server.uri();
message += "\nMethod: ";
message += (server.method() == HTTP_GET) ? "GET" : "POST";
message += "\nArguments: ";
message += server.args();
message += "\n";
for (uint8_t i = 0; i < server.args(); i++) {
message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
}
server.send(404, "text/plain", message);
//Robojax.com ESP32 Relay Control
}//end of handleNotFound()
void setup(void) {
//Robojax.com ESP32 Relay Control
pinMode(relay1Pin, OUTPUT);// define a pin as output for relay
digitalWrite(relay1Pin, relay1State);//initial state either ON or OFF
pinMode(relay2Pin, OUTPUT);// define a pin as output for relay
digitalWrite(relay2Pin, relay2State);//initial state either ON or OFF
Serial.begin(115200);//initialize the serial monitor
//Relay control ON OFF by Robojax.com
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
Serial.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: http://");
Serial.println(WiFi.localIP());
//multicast DNS //Robojax.com ESP32 Relay Control
if (MDNS.begin("robojaxESP32")) {
Serial.println("MDNS responder started");
Serial.println("access via http://robojaxESP32");
}
server.on("/", handleRoot);
server.on("/control", HTTP_GET, relayControl);
server.onNotFound(handleNotFound);
server.begin();
Serial.println("HTTP server started");
}//end of setup
void loop(void) {
//Robojax ESP32 Relay Control
server.handleClient();
if(relay1State ==1)
{
digitalWrite(relay1Pin, LOW);
}else
{
digitalWrite(relay1Pin, HIGH);
}
if(relay2State ==1)
{
digitalWrite(relay2Pin, LOW);
}else{
digitalWrite(relay2Pin, HIGH);
}
delay(100);
//Serial.print("Relay1:");Serial.print (relay1State);
//Serial.print(" Relay2:");Serial.println(relay2State);
//Robojax ESP32 Relay Control
}//end of loop
/*
* relayControl()
* updates the value of the "relayState" variable to 1 or 0
* returns nothing
* written by Ahmad Shamshiri
* on Wednesday, February 22, 2020 at 16:20 in Ajax, Ontario, Canada
* www.robojax.com
*/
void relayControl() {
if(server.arg("r1") == "on")
{
relay1State = 1;// set state of relay1 to ON
}else if(server.arg("r1") == "off"){
relay1State = 0; // set state of relay1 to OFF
}
if(server.arg("r2") == "on") {
relay2State =1; // set state of relay2 to ON
}else if(server.arg("r2") == "off"){
relay2State =0; // set state of relay2 to OFF
}
handleRoot();
}//relayControl() end资源与参考
文件📁
没有可用的文件。
