Pembuatan Prototipe Kursi Roda Inovatif Dengan Akses Suara Menggunakan Smartphone Berbasis Mikrokontroler ATMega 8A

This low power consumption microcontroller is able to execute instructions with a maximum speed of 16MIPS at a frequency of 16MHz and the ATmega8 is tested to work at a voltage between 4.5 - 5.5 V. Test results of motor drivers 1 and 2 working at a voltage of 4.99 prove that the driver circuit has worked according to its function, namely controlling the motor in 2 directions according to the input given. Motor speed can be controlled by adjusting the motor voltage, the higher the voltage, the faster the motor rotates. The voltage drop will slow down the motor to the desired speed, The sensor response if it encounters an obstacle in front of the wheelchair will stop 10 cm before hitting the object. Then the load test is added gradually from 0 to 451 grams. The wheelchair will appear to be starting to slow down at its maximum weight, making it less responsive to commands. After testing, it can be concluded that the tool works as desired, namely controlling the motion of the wheelchair with voice commands and it can be declared successful although there are still some weaknesses and shortcomings that must be improved.

Rancang Bangun Alat Penanganan Dan Pengendalian Kebakaran Berbasis Arduino Nano Dengan Si stem IoT

This will be very useful for residents of the house to prevent what can cause a fire incident. In the main research, system design will make a fire detector and smoke and gas detector, using 3 Flame Sensors and 3 MQ-2 Sensors. This design concept will be installed in each room which consists of 3 rooms. The microcontroller used in this design system is an Arduino Nano microcontroller which functions as part of the Flame Sensor controller, MQ-2 Sensor, WeMos D1 Mini, Relay, and Buzzer. Furthermore, the system output uses a Flame Sensor which is already in a HIGH state so that it can activate automatic shutdown, and the tool can submit a notification to the occupants of the house via an android application called Blynk and an alarm sounds. If the implementation of the MQ-2 Sensor is in a HIGH state, the system will provide warning instructions in the form of a notification from the android and an alarm will sound for the occupants of the house. So that the residents of the house will be prepared to take action to extinguish the fire in the house. Keywords : Fire, Flame Sensor, MQ-2 Sensor

Miniatur Rancang Bangun Penerangan Lampu Jalan Otomatis Pada Malam Hari Menggunakan Sensor Ultrasonik Berbasis Arduiono Mega

Through this problem, it can be done by making a design that uses a technology system. The technology system designed is to make automatic street lighting, which is controlled by the Arduino Mega Microcontroller and Ultrasonic Sensor. Ultrasonic Relays and Sensors use the current in the Arduino, Arduino has a work of 5v. For use, this relay functions as a controller while the current is separate. Battery usage is also used in this design, namely in order to turn on the LED which is being used as an example of an automatic lamp in the automatic lamp design. For the way the automatic light works is to read the Ultrasonic sensor of a vehicle so that it can turn on the light and relay. used, to turn on the current. Then if there is a form of movement, the relay will turn on and automatically the lights are ON. So if a vehicle moves towards the lighting, the light will automatically turn on and illuminate the road, so that after the vehicle passes, the light will automatically turn off in order to save electricity in the road area.

Perancangan Antena Mikrostrip Dual Band Profil Rendah Menggunakan Teknik DGS Dan Meander Line Untuk Aplikasi GNSS

Some of the parameters that are considered to measure GNSS antenna performance are polarization, polarization, bandwidth, return loss and antenna dimensions. This study aims to design a low profile dual band microstrip antenna using the Defected Ground System (DGS) and Menader Line (ML) techniques for GNSS applications. In this research, the DGS technique is used to increase the bandwidth while the ML technique is used to reduce the antenna dimensions. This antenna design uses a FR4 Epoxy substrate with a thickness of 1.6 mm. To design and analyze the antenna, the CST Studio Suite 2016 simulator is used. The simulator is equipped with an optimizer feature that can optimize antenna parameters. Based on the design results, an antenna with a size of 183.6 x 183.6 x 1.6 mm3 has been produced. The antenna works in dual band, namely in the band 1247 - 1294 MHz (bandwidth - 3.70% BW) for radio navigation satellite services Glonass (G2) and Galileo (E6). And in the band 1539-1606 MHz (4.26% BW) for the Galileo (E1) flight radio navigation service, Compass and GPS (L1). Keywords: Global Navigation Satellite System (GNSS), low-profile dual-band microstrip antenna, Defected Ground System (DGS) dan Meander Line (ML).

Perancangan Dan Pembuatan Alat Pengontrol Lampu Menggunakan Internet Of Things (IOT) Berbasis Arduino Uno

The internet has also been attached to smartphones. Smartphone is a device capable of developing the Internet of Things (IoT). Smartphones function to connect to an internet network that is equipped with features in the form of sensors. In using IoT as a network infrastructure tool, it will be able to control and monitor a predetermined device in the form of an Arduino Uno. Arduino does not function as a microcontroller development that is connected to the internet, so that it can make it easier to use lights in everyday life. The open source operating system on an Android smartphone can be used as a material for designing a lamp controller using the internet of thins (IoT) based on Arduino Uno (Atmega328 microcontroller) and a relay as a switch. Therefore, in testing the tool using Arduino which has a time lag of 1 minute. For the use of the Arduino Uno program, a time delay of 5 seconds is also provided, while waiting for the serial command to move from one relay to another.

Analisis Perbandingan Kualitas Jaringan 4G LTE Operator X Dan Y Di Wilayah Kampus Utama UMSU

A technology appears, namely Long Term Evolution (LTE), which is a fourth generation (4G) cellular network technology. This LTE can provide data transfer speeds of up to 100 Mbps on the downlink side and 50 Mbps on the uplink side. The growth in the number of telecommunication service users in Medan City has caused a decline in network quality, especially 4G LTE technology. By doing a drive test, it can be seen the areas where there is signal strength of a network which aims to improve the signal quality of a network. Benchmark (comparison) of 4G LTE operator service quality is done by measuring, comparing, and analyzing the network quality (performance) of two 4G LTE operators around the Muhammadiyah University of North Sumatra campus. The overall throughput value of operator X is only 0> 3 Mbps, while operator Y is 0> 30 Mbps. The very low throughput value is caused by high traffic users during the day, where the Muhammadiyah University of North Sumatra campus is actively studying and many students use data services. That way, people can find out the causes of the internet speed problems they feel when using the internet during the day.