Sensor Knowledge Sending Over Net Serial

In an Arduino IDE mission utilizing the Indus board, it will probably ship sensor knowledge over Net Serial to an online browser, permitting real-time monitoring and evaluation. By creating an online web page with the Net Serial API, it will probably set up a serial connection to the Indus board, which collects knowledge from numerous sensors (e.g., temperature, humidity, gentle). The online web page receives and shows this sensor knowledge dynamically, offering a user-friendly interface for visualizing environmental situations or different sensor readings. This setup is good for purposes requiring distant sensor monitoring, knowledge logging, and interactive knowledge visualization, making it helpful for sensible dwelling programs, environmental monitoring, and academic tasks.

Functions of sensor knowledge sending over internet serial:

• Actual-time monitoring of environmental situations in sensible dwelling programs and agricultural setups.
• Amassing and storing sensor knowledge for evaluation in analysis and industrial purposes.
• Monitoring air high quality, temperature, and different parameters to make sure protected and wholesome residing or working environments

Invoice of Supplies (BoM)

Elements	Description	Amount
Indus Board	3cm sized dev board	1
LED	5mm LED	1
Resistor	1k ohm resistor	1
Swap	Pushbutton-2 Pin	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 = 2;
const int sensorpin = 4;
/* Message callback of WebSerial */void recvMsg(uint8_t *knowledge, size_t len){
WebSerial.println("Acquired Knowledge...");
String d = "";
for(int i=0; i < len; i++){
d += char(knowledge[i]);
}
WebSerial.println(d);
//management LED primarily based 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);
pinMode(sensorpin, INPUT_PULLUP);
WiFi.softAP(ssid, password);
IPAddress IP = WiFi.softAPIP();
Serial.print("AP IP handle: ");
Serial.println(IP);
// WebSerial is accessible at "<IP Handle>/webserial" in browser
WebSerial.start(&server);
/* Connect Message Callback */WebSerial.msgCallback(recvMsg);
server.start();
}
void loop() {
delay(2000);
int val = digitalRead(sensorpin);
WebSerial.print(F("IP handle: "));
WebSerial.println(WiFi.localIP());
WebSerial.printf("Millis=%lun", millis());
WebSerial.printf("Free heap=[%u]n", ESP.getFreeHeap());
WebSerial.printf("val1=[%dn",val);
}

Connection

Testing

Now we connect the board with the USB and upload the code in the indus board and check output after giving command on web serial. To connect indus board with web serial type (192.168.4.1/webserial) in web browser. Then we can press the button on breadboard then at web serial we get the value 1 which shows that the sensor we connect is working .If we release the button then we get the value 0 at web serial.

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