LED Controller Utilizing Net Serial

LED controller that interfaces via Net Serial, permitting to regulate LEDs from an internet browser. By establishing an internet web page with a person interface for controlling the LEDs, the Net Serial API can talk with the Indus board by way of a USB connection. The net web page sends serial instructions to the board, which the Arduino sketch interprets to regulate the LED states accordingly. This setup leverages the Net Serial API’s functionality to offer a seamless and interactive strategy to handle {hardware} gadgets like LEDs straight from an internet utility, making it very best for tasks requiring distant or user-friendly management interfaces.

Functions of LED controllers utilizing internet serial

• Management residence lighting programs remotely by way of an internet browser.
• Handle and alter LED shows in real-time for dynamic visible results in artwork tasks.
• Shortly prototype and check LED-based tasks with an easy-to-use webinterface.
• Improve DIY electronics tasks with web-controlled lighting options.

Invoice of Supplies (BoM)

Elements	Description	Amount
Indus Board	3cm sized dev board	1
LED	5mm LED	1
Resistor	1k ohm resistor	1

Coding

#embody <Arduino.h>
#if outlined(ESP8266)
#embody <ESP8266WiFi.h>
#embody <ESPAsyncTCP.h>
#elif outlined(ESP32)
#embody <WiFi.h>
#embody <AsyncTCP.h>
#endif
#embody <ESPAsyncWebServer.h>
#embody <WebSerial.h>
AsyncWebServer server(80);
const char* ssid = "ESP wifi"; // Your WiFi AP SSID
const char* password = "12345678"; // Your WiFi Password
const int ledpin = 3;
/* Message callback of WebSerial */void recvMsg(uint8_t *knowledge, size_t len){
WebSerial.println("Obtained Knowledge...");
String d = "";
for(int i=0; i < len; i++){
d += char(knowledge[i]);
}
WebSerial.println(d);
//management LED based mostly on obtained message
if (d == "ON") {
digitalWrite(ledpin, HIGH);
WebSerial.println("LED is ON");
}
else if (d == "OFF") {
digitalWrite(ledpin, LOW);
WebSerial.println("LED is OFF");
}
else {
WebSerial.println("Unknown command");
}
}
void setup() {
Serial.start(115200);
pinMode(ledpin, OUTPUT);
WiFi.softAP(ssid, password);
IPAddress IP = WiFi.softAPIP();
Serial.print("AP IP tackle: ");
Serial.println(IP);
// WebSerial is accessible at "<IP Tackle>/webserial" in browser
WebSerial.start(&server);
/* Connect Message Callback */WebSerial.msgCallback(recvMsg);
server.start();
}
void loop() {
delay(2000);
WebSerial.print(F("IP tackle: "));
WebSerial.println(WiFi.localIP());
WebSerial.printf("Millis=%lun", millis());
WebSerial.printf("Free heap=[%u]n", ESP.getFreeHeap());
}

Connection

Testing

Now we join the board with the USB and add the code within the indus board and test output after giving command on internet serial. To attach indus board with internet serial sort (192.168.4.1/webserial) in internet browser. Then we give command “ON” on internet serial then LED begins glowing and once we give command “OFF”, then LED turns into off. And if there may be one other command than “ON” or “OFF”, then it reveals unknown command on internet serial.

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Writer(s): Manjeet Vishwakarma,  Abhay Verma and Satywanti Kundu are B.Tech ECE college students at GJUS&T HISAR