Penelitian ini membahas tentang prototipe alat pendeteksi kualitas udara di dalam ruangan dengan menggunakan mikrokontoler Wemos dan sensor MQ135 yang terhubung dengan platform IoT sebagai sistem monitoring dan notifikasi. Modul sensor MQ135 sebagai detektor kualitas udara, mengirimkan sinyal input untuk diproses oleh mikrokontroler Wemos board. Modul wifi yang terdapat pada Wemos board mengirimkan nilai yang terbaca oleh sensor ke platform IoT Thingspeak yang merekam data logging dalam bentuk grafik. Dalam hal ini, Thingspeak berfungsi sebagai bagian dari sistem monitoring. Sedangkan sebagai sistem notifikasi digunakan platform IoT Blynk apps. Blynk apps terhubung secara tidak langsung ke prototipe alat pendeteksi kualitas udara melalui internet. Nilai yang terbaca dari sensor diproses sesuai program dan jika memenuhi level sensor yang ditentukan maka sistem memberikan notifikasi kepada user melalui Blynk apps. Sistem ini berpotensi untuk digunakan sebagai sistem pemantauan kualitas udara di dalam ruangan untuk meningkatkan kesadaran tentang pentingnya kualitas udara yang sehat.Keywords : Sistem Monitoring, Notifikasi, Kualitas Udara, Sensor, Iot
Penelitian membahas tentang alat pendeteksi gerakan. Alat ini dirancang untuk membantu pemilik rumah untuk mendeteksi gerakan yang terjadi di rumah, ketika pemilik rumah tidak berada di rumah. Pendeteksi gerakan atau detektor yang dirancang, bertujuan untuk membantu sistem keamanan rumah. Sensor PIR digunakan sebagai pendeteksi gerakan yang mengirimkan notifikasi kepada user melalui aplikasi Blynk yang sudah di instal pada smartphone. User dapat melihat dan mengakses data logging berupa grafik melalui platform IoT yaitu thingspeak.com. Metode yang digunakan dalam penelitian ini adalah metode Rekayasa Perangkat Lunak (RPL) serta menggunakan proses model prototipe. Alat dibuat dengan menggunakan empat sensor PIR dan satu WEMOS board mikrokontroler dengan modul Wi-Fi ESP8266 terintegrasi, yang berfungsi untuk mengirimkan hasil input data sensor ke Internet of Things (IoT) platform yaitu Blynk dan Thingspeak.. User perlu terkoneksi dengan jaringan internet untuk mendapatkan notifikasi pada Blynk maupun untuk mengakses thingspeak.com. Hasil pengujian menunjukkan, waktu yang dibutuhkan untuk mengirim dan menerima notifikasi pada Blynk berkisar pada 3 – 6 detik. Sedangkan untuk mengirimkan dan menerima data di Thingspeak berkisar pada 15 – 20 detik. Namun demikian, waktu dapat dipengaruhi oleh konektifits jaringan internet yang tersedia. Hasil penelitian berupa desain dan implementasi sensor PIR sebagai pendeteksi gerakan untuk membantu sistem keamanan di dalam rumah. Keywords :Blynk, Deteksi Gerakan, IoT, Sensor PIR, Thingspeak, WEMOS
Soil moisture related to water content which a factor that affects the plant growth. The process of watering plants is generally done manually regardless of the volume of water needed by plants. This re research discussed about an automated prototype and a system that have the function of watering plants based on the soil moisture level. The method used is prototyping which is suitable with the research purpose. The prototype and systems built with microcontroller, soil moisture sensors, relay and solenoid valve, which integrated with the IoT platform Blynk apps and Thingspeak. The process starts from the detection of soil moisture by the sensor. If soil moisture value is detected on 30% - 35%, then the device activates the watering function by opening the valve from the solenoid valve to drain water to the pipe. When the soil moisture detected more then 35% , the device stops the watering function. ThingSpeak IoT platform, used to display moisture percentage data in graphical form. Blynk apps provide notification features to the user's smartphone when the watering device is activated or deactivated. Based on the test scenario performed, it was found that the percentage of soil moisture with an initial value of 30% - 35% increased to 68.2%, after the watering process. Each component of the device and system has been tested and functioning according to the purpose, so the system has the potential to be used in the process of watering the plants automatically.Keywords: automatic watering system, microcontroller, soil moisture, sensor, IoT.
Bahaya kebakaran dapat berdampak fatal seperti kehilangan harta benda bahkan korban jiwa. Tindakan preventif merupakan hal yang diperlukan guna menghindari, mencegah dan meminimalisir terjadinya bencana kebakaran. Penelitian ini bertujuan untuk merancang dan membangun sistem deteksi asap dan api berbasis sensor, miktrokontroler dan IoT, yang dapat digunakan untuk mendeteksi adanya potensi bahaya kebakaran di dalam rumah maupun bangunan tertentu. Metode penelitian dalam perancangan sistem ini mengacu pada model Prototyping. Komponen yang digunakan berupa sensor asap, sensor api, mikrokontoler, LED, buzzer alarm, yang terintegrasi dengan plafform IoT Blynk. Hasil penelitian berupa sistem deteksi asap dan api berbasis IoT, yang berfungsi untuk memberikan peringatan dini mengenai adanya potensi kebakaran melalui alarm serta notifikasi pesan teks di smartphone. Sistem ini dapat digunakan untuk membantu mendeteksi dan menghindari potensi terjadinya bahaya kebakaran. Kata kunci— alarm kebakaran, deteksi, peringatan dini, notifikasi, Blynk.
Introduction: Amusement Park is a place that provides various attractions for entertainment purpose. People can enjoy games, rides such as roller coaster rides, merry-go-round, etc. Over the time, technology has grown. Many things that are usually done manually by humans are now being replaced by computers. With an automated ticket selling machine, the process of buying the ticket of an amusement park becomes easier for the user. Automata theory is a theoretical branch that has not been widely known to many yet plays essential role in the field of computer science. The main concept of automata theory itself is how to make machines works automatically. Therefore, this study aims to show the implementation the concept of Automata theory in an amusement park automatic ticket selling machine. Methods: The method used to develop the application is formal methods known as Finite State Automata. Formal method is a mathematical modelling that links the production, development, and verification of software and hardware. In this application, the concept of Finite State Automata was applied to recognize and then capture the pattern on the process of ticket selling machine. Results: The result of this study shows that Finite State Automata can become one of the alternatives to design an automatic ticket selling machine for an amusement park by reading each input given by the user and then converts it to the language know by the Finite State Automata. Discussion: In this application, the payment method is by inserting a certain amount of cash into the machine and the machine will proceed to the next process. However, for future development another payment method can be added. For example, instead of inserting cash, user can choose to pay using debit as well as credit card.
Penelitian ini bertujuan untuk membuat prototipe sistem pengontrolan dan monitoring pintu yang bermanfaat untuk keamanan pintu pada sebuah bangunan. Sistem ini mengintegrasikan perangkat keras berbasis mikrokontroler yang dikontrol melalui perangkat lunak aplikasi Smart Building. Perangkat keras dibangun dengan Arduino, Digital Analog Converter (DAC), door strike, dan motor DC. Aplikasi Smart Building dibangun dengan Microsoft Visual Studio dan Arduino IDE. Operator menjalankan fungsi pengontrolan dan monitoring melalui aplikasi Smart Building pada komputer yang kemudian mengirimkan signal digital ke mikrokontroler yang diteruskan ke DAC. DAC mengkonversi signal digital menjadi signal analog yang dikirim ke device door stike dan motor DC yang terpasang di pintu. Sistem dapat melakukan fungsi kontrol seperti mengunci pintu, membuka kunci pintu, membuka pintu, dan menutup pintu. Fungsi monitoring terpantau melalui aplikasi yang dapat menunjukkan status pintu terkunci, tidak terkunci, terbuka atau tertutup. Hasil yang diperoleh menujukkan sistem pengontrolan dan monitoring pintu berfungsi sesuai dengan tujuan.This study aims to create a Prototype System to control and monitoring the doors that useful for security doors in a building. This system-based on microcontroller integrated with software application Smart Building. Hardware built in with Arduino, Digital Analog Converter (DAC), door strike, and a DC motor. Smart Building applications built with Microsoft Visual Studio and the Arduino IDE. Operator control and monitoring function through Smart Building that installed on a computer which sends digital signals to a microcontroller that is forwarded to the DAC. DAC converts the digital signal into an analog signal that sent to the device door stike and DC motor mounted on the doors. The system can perform control functions such as door lock, door unlock, door open, and door close. Monitoring function monitored through applications that show the status of the doors weather locked, unlocked, open or closed. The results showed the door control system and monitoring function in accordance with the purpose.
Humans were often unaware of the risk of contaminated indoor air quality. Based on this, the researcher designs an Indoor Air Quality Monitoring System based on Arduino which could help to raise the human awareness of air quality. This research is based on the Prototyping method. The system hardware built with Arduino Uno which connected to MQ135 sensor to monitor the air quality and Sound Buzzer to sound an alarm whenever the sensor sensed the air quality in a risky value. The Ethernet Shield is used to connect the Arduino Uno to the internet, which enables the process to upload the data which has been read by the sensor to an IoT platform called ThingSpeak. The air quality data which uploaded to ThingSpeak, then retrieved by AirQmon, a customized Android application developed by the researcher to monitor the air quality which is installed on the smartphone. The data is presented graphically to the user through AirQmon apps. This system results in a form of a device and application which could potentially be used as a monitoring system and raise human awareness of indoor air quality.
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