weight-sensor-adruino-remote-monitoring

[KevinCasoco]

include "HX711.h"

include

include

include

include

LiquidCrystal_I2C lcd(0x27, 16, 2);

String apiKey = "3DHYLTJBZOF4DFTO"; // Enter your Write API key from ThingSpeak const char ssid = "BYNARK"; // replace with your wifi ssid and wpa2 key const char pass = "bynark@123"; const char *server = "api.thingspeak.com";

const char emailServer = "smtp.example.com"; const int emailServerPort = 587; const char emailUsername = "your_email@example.com"; const char emailPassword = "your_email_password"; const char senderEmail = "your_email@example.com"; const char *recipientEmail = "recipient_email@example.com";

WiFiClient client; HX711 scale(D5, D6);

int rbutton = D4; // this button will be used to reset the scale to 0. float weight; float calibration_factor = -101525; // for me this value works just perfect 419640 float maxWeightThreshold = 10.0; // Set your maximum weight threshold here

void setup() { Serial.begin(115200); pinMode(rbutton, INPUT_PULLUP); scale.set_scale(); scale.tare(); //Reset the scale to 0 long zero_factor = scale.read_average(); //Get a baseline reading Wire.begin(D2, D1); lcd.begin(); lcd.setCursor(6, 0); lcd.print("IOT"); lcd.setCursor(1, 1); lcd.print("Weighing Scale"); delay(3000); lcd.clear();

lcd.print("Connecting Wifi"); lcd.setCursor(0, 1); lcd.print("& Thingspeak");

WiFi.begin(ssid, pass); { delay(500); Serial.print("."); lcd.clear(); } Serial.println(""); Serial.println("WiFi connected"); lcd.clear(); lcd.print("WiFi connected");

delay(3000); }

void loop() { scale.set_scale(calibration_factor); //Adjust to this calibration factor

weight = scale.get_units(5);

lcd.setCursor(0, 0); lcd.print("Measured Weight"); lcd.setCursor(0, 1); lcd.print(weight); lcd.print(" KG "); delay(1500); lcd.clear();

Serial.print("Weight: "); Serial.print(weight); Serial.println(" KG"); Serial.println();

if (digitalRead(rbutton) == LOW) { scale.set_scale(); scale.tare(); //Reset the scale to 0 }

if (weight >= maxWeightThreshold) { sendEmailNotification(weight); }

if (client.connect(server, 80)) // "184.106.153.149" or api.thingspeak.com { String postStr = apiKey; postStr += "&field1="; postStr += String(weight); postStr += "\r\n\r\n";

client.print("POST /update HTTP/1.1\n");
client.print("Host: api.thingspeak.com\n");
client.print("Connection: close\n");
client.print("X-THINGSPEAKAPIKEY: " + apiKey + "\n");
client.print("Content-Type: application/x-www-form-urlencoded\n");
client.print("Content-Length: ");
client.print(postStr.length());
client.print("\n\n");
client.print(postStr);

} client.stop(); Serial.println("Waiting..."); //delay(1500); // thingspeak needs minimum 15 sec delay between updates. }

void sendEmailNotification(float exceededWeight) { SMTPData smtpData; smtpData.server = emailServer; smtpData.port = emailServerPort; smtpData.emailUsername = emailUsername; smtpData.emailPassword = emailPassword; smtpData.sender = senderEmail; smtpData.recipient = recipientEmail; smtpData.subject = "Weight Threshold Exceeded"; smtpData.message = "The maximum weight threshold has been exceeded. Current weight: " + String(exceededWeight) + " KG";

ESP8266SMTP::send(smtpData); }