The aim of this study is to help a company gas or chemical companies to determine the point of a gas leak. To find out the point of the gas leak, it is necessary to create a robot capable of exploring the underground passageway and has the ability to detect scent strength of gas, so that the point of the leak can be found .. One of the application of robotics technology in accordance with the conditions of underground passageways are a robot that has a combination of Wheeled Robot Arm Robot and 6WD. Due to the design of the robot can roam the surface conditions are not flat and has the ability to balance its body. The results achieved in this study is that the robot can detect the presence of butane gas use TGS2600 sensor. In addition, the transmission of information from the robot to use XBee interface software has been successfully carried out. So that the operator controls the robot can monitor the condition of the robot. Delivery of image information from the robot to the operator can be performed via the S-video channel then transferring images from the camera to the laptop.

Line follower robot requires an automatic control system in operating to follow a track / line. Control systems are used in line follower robot is PID-based control system. In PID control system requires setting of constants Kp, Kd, and Ki proper to obtain a stable movement of the robot to follow the line or track. Line follower robot that used in this research is an adaptive robot, so the robot can adapt in every lighting conditions were be different on each track by adding two pieces of light sensors on the robot.The integration of the PID control system by setting the constants of Kp, Kd, Ki precise and automatic light sensitivity settings, will produce good movement to follow the track and that can adapt with every lighting conditions automatically be. From the experiment have been done, obtained the best control constants of Kp, Kd, and Ki with a constant value entered is Kp = 7, Kd = 5, and Ki = 7 and light sensitivity automatic setting searched based on a reading of two light sensors and with the formula of sensitivity is = ((sensor1 + sensor2) / 2) + 100. Intisari-Robotline followermerupakan robot dengan sistem kontrol otomatis dalam beroprasi mengikuti sebuah lintasan/garis. Sistem kontrol yang digunakan dalam robot line follower adalah sistem kontrol berbasis PID. Pada sistem kontrol PID memerlukan pengaturan konstanta Kp, Kd, dan Ki yang tepat untuk memperolehpergerakan robot yang stabil dalam mengikuti garis atau lintasan. Robot line follower yang digunakan pada penelitian ini adalah robot yang bersifat adaptif, sehingga robot dapat beradaptasi di setiap kondisi pencahayaan yang berbeda pada setiap lintasan dengan memanfaatkan penambahan 2 buah sensor cahaya pada robot.Hasil daripenggabungan sistem pengaturan PID dengan pengaturan konstanta Kp, Kd dan Ki yang tepat dan sistem pengaturan kepekaan cahaya otomatis, maka akan diperoleh hasil pergerakan robot pada lintasan yang baik dan robot yang dapat beradaptasi dalam beberapa kondisi pencahayaan secara otomatis. Dari hasil ujicoba robot yang telah dilakukan, maka telah diperoleh pengaturan konstanta Kp, Kd, dan Ki terbaik dengan nilai kons tanta yang diinputkan yaitu Kp=7, Kd=5, dan Ki=7 dan pengaturan kepekaan cahaya otomatis yang dicari berdasarkan pembacaan 2 buah sensor cahaya dan dengan rumus kepekaan = (( sensor1 + sensor2 ) / 2) + 100.

─The design of balancing the load current on threephase systems using a microcontroller ATMega 2560 is a tool that serves to reduce the power loss due to the load current unbalance the current flows in the neutral phase on three-phase systems.The methods in making this tool is divided into two parts: first, the design of hardware consist of designing electronic components which are used by the current sensor circuits, relay, LCD (Liquid Crystal Display) etc. Second, the design of software is a tool listing program procedure including the monitoring program displays the current of each phase on LCD using the Arduino IDE. SCT013-030 current sensor used, the output of the current sensor is connected to the pin ADC (Analog to Digital Converter) microcontroller ATMega 2560.The result of the test design of balancing load current on three-phase system using a microcontroller ATMega 2560 succeed balancing the load current by moving the channel load of sequence number load the smallest connected to the phase with the current biggest load toward a phase that has a load current smallest when neutral current exceeds the limit is permitted.

Aviation technology and space is one of the leading technology for developed countries, especially in the form of rocket technology and charge. The countries that are capable of mastering these technologies will be respected by countries all over the world. Indonesia as the island nation with large and extensive maritime should have independence in the mastery of the technology of the rocket and payload. Therefore, continuous efforts are required to achieve independence, including through enhancing the sense of love of aviation technology and space technology, particularly at early stages the rocket and payload. Graphic Monitoring Test Rocket Launch Payload Attitude is the attitude of remote monitoring launch vehicle through the computer screen (display) continuously (real-time) data obtained from sensors-sensors that are mounted on the rocket's payload. 3D point (x, y, z) must be expressed as a graph visualization perspective drawings of rockets with the appropriate direction. The radar conducted computer GS (Ground Segment) or Ground Control Station (GCS. The result of the attitude of the Rocket Test launch Payloads have been able to communicate with the 3D data sending (x, y, and z) in real-time to the Ground segment. Wireless communication uses radio telemetry frequency 433 MHz, power of 100 mW, the distance range obtained in this study a maximum of 500 Meters in the air, without a hitch.

This paper presents a system to display traffic density in real time based on speed of vehicles on the main roads in the city of Denpasar. With this application, users who are in a vehicle can get the density of roads information. The software will run on the Android platform created with the help of Google maps with visualization density of roads are being reviewed. Measurement of vehicle speed using the frame difference method, so the computational process can be run quickly and in real time. The trial results of this paper, user (vehicle speed measurement) produces the same data as the data is received by the client (viewer visualization) with the display format is the name of the location, vehicle speed, date and time data retrieval.