Wireless Android-Based Control of Plastic Crane Roll Control Prototype

- Overhead crane is a lifting tool used by almost all industries, ports, warehouses, workshops, and others. In general, the overhead crane control system is less effective and efficient because the operator still follows the direction of the crane's speed. In this case, problems often occur because the pendant switch which functions as a controller still uses a cable as a connector to the overhead crane panel. Various problems that often occur include cables breaking frequently due to being hit by a load lifted by the hoist, operators having difficulty setting a safe distance because they are limited by the length of the pendant switch cable. Based on the background of the problem, a control system is made which is expected to be able to control the overhead crane effectively and efficiently without using a cable as a connector but using an android smartphone. Control with an android smartphone using an android application with a wifi connection and an arduino uno R3 microcontroller. Based on the test results on this control system, device control can be controlled at a maximum distance of ± 100 meters as long as the device is still within wifi range. The control system can function optimally and the application can be installed on Android OS 4.0 (Jelly Bean) smartphones. Therefore, the use of a cable can be replaced with a wifi connection system to reduce friction with the cable and so that the operator can maintain a safe distance from the load to be moved because it is no longer limited by the length of the cable.


I. INTRODUCTION
Overhead crane is a lifting tool that is used by almost all industries, ports, warehouses, workshops, and others. In general, the overhead crane control system is less effective and efficient because the operator still follows the direction of the crane's speed. In this case, problems often occur because the pendant switch which functions as a controller still uses a cable as a connector to the overhead crane panel.
Various problems that often occur include cables breaking frequently due to being hit by a load lifted by the hoist, operators having difficulty setting a safe distance because they are limited by the length of the pendant switch cable. Based on the background of the problem, a control system is made which is expected to be able to control the overhead crane effectively and efficiently without using a cable as a connector but using an android smartphone. Control with an android smartphone using an android application with a wifi connection and an arduino uno R3 microcontroller. Based on the test results on this control system, device control can be controlled as long as the device is still within wifi range. The control system can function optimally and the application can be installed on Android OS 4.0 (Jelly Bean) smartphones. Therefore, the use of a cable can be replaced with a wifi connection system to reduce friction with the cable and so that the operator can maintain a safe distance from the load to be moved because it is no longer limited by the length of the cable. Wifi is used as a connection for sending commands from Android to the control system (NodeMCU). c. NodeMCU modules The NodeMCU module is used to process commands sent via wifi from the android application.

d. Relay Module
The Relay Module is used to regulate the movement of the Overhead Crane according to the command received.

Data Collection Method
In the data collection method this time using the experimental observation method, namely the method carried out by: 1. Test the Overhead Crane with a control system that is in accordance with the standard crane pendant switch. 2. Testing control and response capabilities on android applications.

Testing the movement of the Overhead
Crane when in operation to determine the responsibility

Data Analysis Method
The data analysis used is experimental data analysis to analyze the accuracy of the tool through the right components after the trial: 1. Observing the performance comparison between the Overhead Crane that still uses a pendant switch and the Overhead Crane that uses the Android control system. 2. Observing the differences and responsiveness of Overhead Cranes that still use pendant switches with a control system regulated by Android. 3. Observing the level of system security by paying attention to the movement of the Overhead Crane when it is operated until it is felt that this system can be used properly or meets standards.

III. RESULT AND DISCUSSION
At the time of designing and manufacturing "Design of Android Based Plastic Roll Crane Control Prototype". This tool can be used to control overhead cranes effectively and efficiently without using a cable as a connector but using an android smartphone. By using a Wifi connection, it is felt that it will be more practical, efficient and accurate.
Based on the test results on this control system, device control can be controlled as long as the device is still within wifi range. The control system can function optimally and the application can be installed on Android OS 4.0 (Jelly Bean) smartphones. Therefore, the use of a cable can be replaced with a wifi connection system to reduce friction with the cable and so that the operator can maintain a safe distance from the load to be moved because it is no longer limited by the length of the cable.