Rancangan Sistem Timbangan Digital Berbasis Internet Of Things ( Iot) Menggunakan ESP32

ADNAN SYARIF

Abstract


Teknologi saat ini sudah sangat berkembang dengan pesat, termasuk dalam bidang teknologi alat ukur. Teknologi pada alat ukur timbangan saat ini sudah menggunakan digital karena lebih mudah dan lebih akurat dibandingkan yang analog. Timbangan digital ditemui hampir di setiap tempat perbelanjaan di supermarket maupun pedagang buah di sekitar.Namun timbangan yang terdapat dipasaran hanya mengukur berat dan menampilkan harga dari barang yang ditimbang, data penjualan dari barang-barang yang dijual harus didata secara manual, dengan berdasarkan hal ini maka pada pengembangan perancangan alat kali ini akan dibuat sebuah timbangan digital yang fungsinya dapat menimbang, menghitung, mencetak dan mengkalkulasi hasil penjualan. Perancangan alat ini akan menggunakan mikrokontroller sebagai pengendali utama dan berbasis internet of things sebagai media untuk mendata penjualan secara otomatis bersamaan dengan saat transaksi tersebut dilakukan. Komponen utama yang digunakan untuk merealisasikan timbangan digital ini dengan modul HX711 dan juga sensor load cell. Sensor tersebut sebagai input yang terhubung di mikrokontroler dan nilai pembacaan dan perhitungannya akan di tampilkan melalui LCD I2C hasil penelitian dari perancangan yang telah dilakukan adalah bahwa timbangan buah dapat bekerja untuk menimbang, menentukan jenis buah, mengunggah data ke google spreadsheet serta mencetak struk dengan printer thermal dengan input power Supply 5 vdc, kesimpulan yang didapat adalah bahwa timbangan digital yang di rancang ini memiliki nilai pembacaan yang kurang lebih mirip dengan timbangan digital yang beredar dipasaran tetapi dengan perbandingan yang sedikit berbeda dalam sensitifitas sensor berat, kemudian pencetakan struk dengan printer thermal berjalan dengan baik serta pengunggahan data ke google spreadsheet berjalan tanpa error dan dengan koneksi wifi yang bagus.

 

Kata kunci : Load Cell Sensor, Modul HX711, ESP32, Internet Of ThinksKeypad, LCD I2C, Printer Thermal

 

ABSTRACT

 

Today's technology has developed very rapidly, including in the field of measuring instrument technology. The technology in today's weighing instruments already uses digital because it is easier and more accurate than analog. Digital scales are found almost everywhere in the world in supermarkets and fruit traders around them. However, the scales available on the market only measure weight and display the price of the goods being weighed, sales data from the goods sold must be recorded manually, based on this, in the development of this tool design, a digital scale will be created whose function is to weigh, count, print and calculate sales results. The design of this tool will use a microcontroller as the main controller and is based on the internet of things as a medium to automatically record sales at the same time as the transaction is made. The main components used to realize this digital scale are the HX711 module and also the load cell sensor. The sensor is an input connected to the microcontroller and the reading and calculation values will be displayed via the I2C LCD. The results of the research from the design that has been done are that the fruit scale can work to weigh, determine the type of fruit, upload data to Google spreadsheets and print receipts with a thermal printer with a 5 vdc power supply input. The conclusion is that the digital scale that is designed has a reading value that is more or less similar to the digital scales on the market but with a slightly different comparison in the sensitivity of the weight sensor, then printing receipts with a thermal printer works well and uploading data to Googlespreadsheets runs without error and with a good wifi connect.


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