Internet of Things (IoT) technology makes it possible to monitor and control environmental conditions and electronic devices remotely via the internet. To be used as a monitoring and control tool, the IoT must be able to be operated in realtime. IoT must be able to provide information about an environmental condition and control electronic devices in real time. In this study a remote lighting control system was built using Firebase as a database that is able to turn on/off lights in realtime. The system is built using NodeMCU ESP8266 and android applications so that it is easier to implement on smartphones. The purpose of this study is to perform a performance analysis of firebase as a database that is able to update data in real time via the internet. Testing is done using various types of network connections such as 3G networks, 4G networks, and Local Area Networks (LANs). The test results show that Firebase supports the application of IoT that is capable of updating data in realtime, but the type of network connection used provides a varied delay effect. The average delay generated on 3G networks, 4G networks and LANs is 3.57 seconds, 1.42 seconds and 1.4 seconds.

Wireless sensor network is a technology used in supporting monitoring activities both inside and outside environment. Data communication on wireless sensor networks is done wirelessly. The Zigbee protocol is one of the protocols used in data communication on wireless sensor networks as an implementation of XBEE devices. In this study measurement of Zigbee protocol performance on XBEE devices inside and outside environment. The measurement conditions in the room are limited by the wall partition, while the outdoor conditions are line of sight. Measurements were made by sending packet data using XCTU software, by testing distance parameters, packet delay, packet loss, RSSI, and throughput with 84 Bytes packet data size. The results showed that the measurement results of XBEE Pro S2 devices that were carried out indoors were able to communicate with a maximum distance of 30 meters, while the outdoor measurements showed the communication capability of XBEE Pro S2 devices reached a maximum distance of 600 meters.

Today, having a healthy body is everyone’s dream, from the age of the children, teenagers to adulthood. Personal health must be maintained to run all the activities that are being done. One of the factors that affect the health condition is the nutritional status of a person, which sometimes decreases or increases too high. Body mass index is the most commonly used indicator to know the nutritional status of a person. This system uses two sensors, the load cell sensor as a weight gauge and ultrasonic sensors as a measure of height. Processing data using Arduino Uno and the results of data processing from microcontroller issued to the LCD and stored on the PC database as data Body Mass Index which further processed and displayed the person’s nutritional status directly. After the test, the system successfully measured the weight and height that will be processed into the value of Body Mass Index. The test of this system is performed by randomly selected respondents, both children and adults. Value of the measurement system is also compared with the value using standard tools for measuring weight and height, and the results have near 100% accuracy.

AbstrakKeamanan server merupakan hal penting yang perlu diberikan perhatian lebih saat melakukan konfigurasi server. Pada umumnya serangan yang terjadi pada server diketahui setelah terjadinya kegagalan pada server dalam memberikan layanan. Pada penelitian ini, dibangun sebuah sistem keamanan server yang dapat melakukan monitoring pada sebuah server ketika terdeteksi adanya aktivitas yang tidak wajar. Pemberitahuan akan dikirimkan melalui SMS (Short Message Service) ke handphone Administrator jaringan. Sistem yang dibangun melakukan pendeteksian intrusi pada server secara realtime menggunakan SNORT. Ketika terjadi akses yang tidak wajar pada server, maka SNORT akan mendeteksi dan mengirimkan informasi terjadinya aktivitas yang tidak wajar ke Administrator jaringan. Sistem ini diujikan dengan lima jenis serangan yakni PING Attack, DoS/DDoS Attack, Port Scanning, Telnet Access dan FTP Access. Parameter yang diamati pada penelitian ini adalah beban aktivitas yang terjadi pada sumber daya server meliputi CPU, Memory (RAM) dan beban jaringan. Hasil penelitian menunjukkan bahwa saat terjadi upaya serangan terhadap server, SNORT dapat menghasilkan alert yang akan disimpan pada log sekaligus dikirimkan ke handphone Administrator melalui SMS. AbstractServer security is an important thing that needs to be given more attention when configuring a server. In general, attacks that occur on the server are known after a failure on the server in providing services. In this study, a server security system was built that could monitor a server when an unusual activity was detected. Notifications will be sent via SMS (Short Message Service) to the network Administrator's smartphone. The system is built to detect intrusions on the server in real time using SNORT. When improper access occurs on the server, SNORT will detect and send information about the occurrence of unusual activity to the network Administrator. This system is tested with five types of attacks namely PING Attack, DoS / DDoS Attack, Port Scanning, Telnet Access and FTP Access. The parameters observed in this study are the activity load that occurs on server resources including CPU, Memory (RAM) and network load. The results showed that when an attempt was made to attack the server, SNORT could produce alerts that would be stored in a log as well as sent to the Administrator's smartphone via SMS.

High-Speed Photography is a technique to capture a moment that moves very quickly. This technique is commonly used by photographers and scientists for research purposes, especially in the fields of physics, chemistry, and metallurgy. To capture the moment that moves quickly the photographer must squeeze the camera manually, then the camera will tend to shake, and the picture is not taken correctly. Also, there is also a delay between squeezing the camera with the shutter movement that adds error factor. In this study designed a high-speed automatic photography tool using a sound sensor that can freeze objects automatically when the sound is heard. To design and make this High-Speed Photography tool automatically use Microcontroller and FC-04 Voice Sound. The results of the overall test conducted to test all the components contained in the tool High-speed automatic photography. The first test scenario is to put the tool ± 50 cm will work optimally, the second test scenario is the sound sensor response when the balloon object to distinguish the object to photograph. This tool is capable of taking pictures automatically when the sound is heard.