AUTOMATIC STEERING SYSTEM ON THE PROTOTYPE ELECTRIC CAR UMSIDA

Currently the electronic device can not be separated from human life, especially is the gadget. Gadgets in daily activities is almost inseparable from our grasp, from children to adults. Many devices are now directly connected with android smartphone. Hence the idea to do some research occurred android smartphone is connected to a steering system of the car. In this case study is used as a prototype electric car UMSIDA. Here we create an electronic circuit that we put on the car steering system, which by using blutooth connection connects to an android smartphone that we use. As for the electronic devices we use Arduino is programmed using C language to run the motor that moves according to the input data transmitted via android smartphone. Where the results of tests show that the speed turns on bluetooth pairing process is more influenced by the android version and hardware high. Keyword = Android Smartphone, Arduino Nano, DC Motor.


INTRODUCTION 1.1 Background
Along with the continued development of current technologies, which in the modern world urgently needed tools that could help mengefisiensi our work.So many invented a tool that aims to make it easier to humans in many ways.The more equipment that can also be controlled with a smartphone because smartphone, one of which has multiple sensors and devices that have already grown from the factory.So that it can communicate with the microcontroller then the smartphone can be used as a controller for a wide variety of electronic equipment.From here to materialize the idea to create the automation system the wheel on a prototype electric car UMSIDA.

II. RESEARCH METHODOLOGY
To complete this research there are several stages that are conducted are: the design of Hardware and software Design.

Design Of Hardware
Here we designed the nano, arduino microcontroller Assembly mounting component used for example bluetooth module HC-05, DC motors, and others.

Test Application Installation Boarduino
To prove that android can be used to control steering system prototype electric car, then on android app installed previously Boarduino already didonwload of Play Store.

The Overall Testing
Step stride: 1. Prepare a prototype electric 2. prepare accu 12v DC motor pengarak as the source.
3. Turn on the power Switch.
5. Verify the device connection and bluetooth module android smartphone HC-05.
Figure 12.Electric car steering system and application Boarduino

The test results with 5 Android Smartphone
Android Smartphone that is used in this test are taken from a wide variety of hardware such as a Dual-core, Quad-core, and Octa-core.For the version of android gingerbread is low because most applications can only be run on the version, and the most high is a version of the smartphone, making marsmallow used and the specifications for testing are as the following table.with a series of arduino, and this is done by changing the distance between android smartphone with a series on arduino prototype electric car steering system.
Figure 13.Android Smartphone type tested Observations note that all devices android smartphone can be used to control steering system prototype electric cars with good for connected with series of arduino.Further testing is underway to find out the time required in the process of pairing android smartphone with a series of arduino, and this is done by changing the distance between android smartphone with a series on arduino prototype electric car steering system.

Figure 1 design of the Hardware 1 .
Figure 1 design of the Hardware

Figure 8 .
Figure 8. Circuit Module IC L298N And DC Motor

Figure 14 .
Figure 14.Testing Android Pairing to a series of Arduino From Figure 14 if calculated again on average per smartphone android from the average time per distance pairing on all devices android smartphone as below: SAMSUNG GALAXY MINI: 0:03:02 ANDROMAX I2:0: 03:02 ASUS ZENFONE 4:0: 02:75 VIVO Y51:0: 02:44 LENOVO VIBE K4 40 NOTE: 0:02:00 The results of the calculation shows the sequence of versions of android, SAMSUNG GALAXY MINI lowest version OS IE 2.3.3 (Gingerbread) and LENOVO VIBE K4 40 NOTE OS version 6.0.0 (Marshmallow) the most high.The data of the average calculation results indicate that the higher the version of android smartphones and hardware, then the pairing time getting smaller or faster.