C++ for the Arduino ESP8266 NodeMCU to control 4 remote LEDs\/Relays <\/p>\n\n\n\n
#include <ESP8266WiFi.h> \/\/ Node MCU \nconst char *ssid = \"*****\";\nconst char *password = \"*****\";\nconst int LED5 = 2; \/\/ pin to control the built-in LED (2 = built-in LED on NodeMCU)\nconst int LED1 = 4; \/\/ pin to control output 1\nconst int LED2 = 5; \/\/ pin to control output 2\nconst int LED3 = 12; \/\/ pin to control output 3\nconst int LED4 = 14; \/\/ pin to control output 4\nWiFiServer server(80);\n\nvoid setup() {\n pinMode(LED5, OUTPUT); digitalWrite(LED5, HIGH);\n pinMode(LED1, OUTPUT); digitalWrite(LED1, HIGH);\n pinMode(LED2, OUTPUT); digitalWrite(LED2, HIGH);\n pinMode(LED3, OUTPUT); digitalWrite(LED3, HIGH);\n pinMode(LED4, OUTPUT); digitalWrite(LED4, HIGH);\n \/\/ Serial.begin(115200);\n delay(10);\n WiFi.begin(ssid, password);\n while (WiFi.status() != WL_CONNECTED) {delay(500);} \/\/Serial.println(\"Connecting to WiFi...\");}\n \/\/ Serial.println(\"Connected to WiFi\");\n server.begin();\n \/\/ Serial.println(\"Server started\");\n \/\/ Serial.println(WiFi.localIP());\n}\n\nvoid loop() {\n \/\/ Check if a client has connected\n WiFiClient client = server.available();\n if (!client) {return;}\n\n \/\/ Wait for the client to send a request\n \/\/ Serial.println(\"New client\");\n while(!client.available()){delay(2);}\n String request = client.readStringUntil('\\r'); \/\/ Serial.println(request);\n if (request.indexOf(\"\/LED1=ON\") != -1) {\n digitalWrite(LED1, LOW);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED1 is ON<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED1=OFF\") != -1) {\n digitalWrite(LED1, HIGH);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED1 is OFF<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED2=ON\") != -1) {\n digitalWrite(LED2, LOW);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED2 is ON<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED2=OFF\") != -1) {\n digitalWrite(LED2, HIGH);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED2 is OFF<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED3=ON\") != -1) {\n digitalWrite(LED3, LOW);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED3 is ON<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED3=OFF\") != -1) {\n digitalWrite(LED3, HIGH);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED3 is OFF<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED4=ON\") != -1) {\n digitalWrite(LED4, LOW);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED4 is ON<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED4=OFF\") != -1) {\n digitalWrite(LED4, HIGH);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED4 is OFF<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED5=ON\") != -1) {\n digitalWrite(LED5, LOW);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED5 is ON<\/h1><\/body><\/html>\");\n } else if (request.indexOf(\"\/LED5=OFF\") != -1) {\n digitalWrite(LED5, HIGH);\n client.println(\"HTTP\/1.1 200 OK\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>LED5 is OFF<\/h1><\/body><\/html>\");\n } else {\n client.println(\"HTTP\/1.1 404 Not Found\");\n client.println(\"Content-Type: text\/html\");\n client.println();\n client.println(\"<html><body><h1>404 Not Found<\/h1><\/body><\/html>\");\n }\n client.stop();\n \/\/ Serial.println(\"Client disconnected\");\n}<\/code><\/pre>\n\n\n\nand HTML for control from a webpage. <\/h2>\n\n\n\n<html>\n <head>\n <title>LED Control<\/title>\n <style>\n .led-display {height: 30;width: 180px;border-radius: 25px;display: inline-block;margin-right: 10px;}\n button {height: 40px;}\n <\/style>\n \n <\/head>\n <\/head>\n <body>\n <h1>LED Control<\/h1>\n <p>\n <button onclick=\"turnOn(1)\">Turn LED1 ON<\/button>\n <button onclick=\"turnOff(1)\">Turn LED1 OFF<\/button>\n <div id=\"led1-display\" class=\"led-display\" style=\"background-color: red;\"><\/div>\n <\/p>\n <p>\n <button onclick=\"turnOn(2)\">Turn LED2 ON<\/button>\n <button onclick=\"turnOff(2)\">Turn LED2 OFF<\/button>\n <div id=\"led2-display\" class=\"led-display\" style=\"background-color: red;\"><\/div>\n <\/p>\n <p>\n <button onclick=\"turnOn(3)\">Turn LED3 ON<\/button>\n <button onclick=\"turnOff(3)\">Turn LED3 OFF<\/button>\n <div id=\"led3-display\" class=\"led-display\" style=\"background-color: red;\"><\/div>\n <\/p>\n <p>\n <button onclick=\"turnOn(4)\">Turn LED4 ON<\/button>\n <button onclick=\"turnOff(4)\">Turn LED4 OFF<\/button>\n <div id=\"led4-display\" class=\"led-display\" style=\"background-color: red;\"><\/div>\n <\/p>\n <p>\n <button onclick=\"turnOn(5)\">Turn LED5 ON<\/button>\n <button onclick=\"turnOff(5)\">Turn LED5 OFF<\/button>\n <div id=\"led5-display\" class=\"led-display\" style=\"background-color: red;\"><\/div>\n <\/p>\n <script>\n function turnOn(led) {\n var xhr = new XMLHttpRequest();\n xhr.open(\"GET\", \"http:\/\/192.168.1.210\/LED\" + led + \"=ON\", true);\n xhr.send();\n updateDisplay(led, \"green\");\n }\n function turnOff(led) {\n var xhr = new XMLHttpRequest();\n xhr.open(\"GET\", \"http:\/\/192.168.1.210\/LED\" + led + \"=OFF\", true);\n xhr.send();\n updateDisplay(led, \"red\");\n }\n function updateDisplay(led, color) {\n document.getElementById(\"led\" + led + \"-display\").style.backgroundColor = color;\n }\n <\/script>\n <\/body>\n<\/html><\/code><\/pre>\n\n\n\nThis project was completed in 30 minutes with about 4 or 5 brief sentences given to chat.openai.com. The code worked flawlessly the first time both functionality and syntax. <\/p>\n","protected":false},"excerpt":{"rendered":"
C++ for the Arduino ESP8266 NodeMCU to control 4 remote LEDs\/Relays and HTML for control from a webpage. This project was completed in 30 minutes with about 4 or 5 brief sentences given to chat.openai.com. The code worked flawlessly the first time both functionality and syntax.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-28","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
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