Pengisian KWH Meter Prabayar Menggunakan Plotter 2D

Abstract

The rapid development of technology in the IoT (Internet of Things) field gave rise to the idea to create a final project entitled Charging Prepaid KWH Meters Using a 2D Plotter. The problem to be solved in the final project is to overcome the problem in terms of filling the Prepaid KWH Meter which is still done manually by pressing the keypad directly on the Prepaid KWH Meter, this will be a problem if the position of the Prepaid KWH Meter is difficult to reach or out of reach of hands, the second is to avoid direct contact with the Prepaid KWH Meter keypad so as to prevent the spread of the Covid 19 virus that can lodge in inanimate objects such as the Prepaid KWH Meter keypad. This final project uses the ThingSpeak IoT platform as a place to store and retrieve data via an internet connection and use the Android application as a place to remotely and monitor the status of Prepaid KWH Meters. Based on the tests that have been carried out, the number of steps needed by the stepper motor in theory and practice at a distance of 14 mm on the X axis and 9 mm on the Y axis, the error percentage is 1.785%. When ThingSpeak sends token data to the NodeMCU ESP8266 which can be seen on the Arduino IDE serial monitor, the average delay is 23.19 seconds. And in application testing there are 3 status conditions, namely the first "WAITING" status occurs when the token data transmission process is in progress or the 2D Plotter is working, the second "ADA LISTRIK" status occurs when the sensor does not detect the buzzer sound on the Prepaid KWH Meter, which The third status “TOKEN MAU HABIS” occurs when the sensor detects a buzzer sound on the Prepaid KWH Meter.

Keywords : IoT (Internet Of Things), Prepaid KWH Meter, 2D Plotter, Android Aplication, NodeMCU ESP8266, Stepper Motor, Arduino IDE, MIT App Inventor