Smart LPG Cylinder Stand

Take the worries of booking gas cylinder away use our innovative cylinder stand.

IntermediateFull instructions provided24 hours956

Things used in this project

Hardware components

Texas Instruments MSP-EXP430G2 MSP430 LaunchPad

HC-05 Bluetooth Module

SparkFun Load Cell Amplifier - HX711

Load Cell, Low Profile

Software apps and online services

Texas Instruments Energia

MIT App Inventor 2

Story

Objective:

Design a stand for home LPG cylinder which will monitor the gas amount in real time and book the cylinder in case the gas content goes below a threshold value. The cylinder stand communicates the data to android app and cylinder booking is done through automatic sms that is sent via app to the concerned booking agency. HC05 bluetooth is used to communicate data from launchpad to mobile phone app. The project has been designed during 24 hour Makeathon event held at our campus.

Working video of the project is shown below:

code for weight measurement

#include "HX711.h"
HX711 scale(12, 11);   
long int ZF;
void setup() {
Serial.begin(38400);
Serial.println("Initial reading ");
Serial.print("read:");
Serial.println(scale.read());    
ZF = scale.read_average(20);
Serial.print("read average: \t\t");
Serial.println(scale.read_average(40));
}

void loop() {
  //Serial.println("Zero factor");
//Serial.println(ZF);
 delay(1000);
 long int test=(scale.read()ZF);
  //Serial.println(test);
  int value= test;
 Serial.println("the weight is :");
  Serial.print(value/7500);

 // scale.power_down();            
  delay(1000);
 // scale.power_up();
}
// VIVEK CHHABRA BTECH CSE MRU
// AKASH DUBEY BTECH CSE MRU