Real Time Workload Data Logger at Lathe Machine with ESP8266

The readiness of the machine is very important in practical activities so necessary to good engine maintenance system and organized. Machine maintenance scheduling can be arranged based on the time of use or component life. Recording the time of using a lathe is difficult to do manually, so it is necessary to record the time of using a lathe automatically using a data logger that can store data centrally via a Wi-Fi network. The components used in the development of the data logger consist of (1) the ESP8266 module as a data sender, (2) a 220 Volt relay as a connector between the ESP8266 and the lathe, (3) the Raspberry Pi as a local server, and (4) a Wi-Fi modem as a liaison between devices. ESP8266 will send the lathe condition data using HTTP GET method to the server and stored in SQL database using PHP code. The trial was carried out in a mechanical workshop, Universitas Negeri Malang. Tests are carried out to obtain data on the duration of time when the lathe is used until it is finished. The resulting data can be stored properly and can be exported into an excel file so that it can be processed and analyzed further. The development of a data logger using the ESP8266 has advantages, namely low manufacturing costs, can be connected via a Wi-Fi network, storage can be done centrally, can record data quickly and accurately and data in digital form so that it can be analyzed further. With these advantages, the preventive maintenance scheduling process can be carried out easily according to the workload that has been taken by the machine.