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One of the automatic sink products was made by Yogyakarta Technology University students. It is felt that this automatic sink product needs to be tested for its usability or ease of use. The USE questionnaire was used to carry out this test, and five test parameters were used. specifically, learning ability, efficiency, memory, error avoidance, and satisfaction. Based on its use, the purpose of this paper is to find out the user's opinion about the automatic sink product. The distribution of the USE questionnaire consisting of ten questions and five rating points on a Likert Scale was used to conduct this kind of quantitative descriptive research on consumers of automatic sink products. This study obtained usability measurement results for automatic sink products with a value of 84.67% on learnability, 96.22% on efficiency, 82.44% on memoriability, 88% on errors and 76.88% on satisfaction.

Internet-of-Things (IoT) merupakan teknologi yang mengintegrasikan berbagai peralatan dengan Internet. Salah satu pemanfaatan IoT adalah sistem kontrol elektronik pada berbagai peralatan rumah. Peralatan rumah dapat dilengkapi dengan mikrokontroler, sensor, dan aktuator, serta modul komunikasi, sehingga dapat dihubungkan ke internet dan dipantau dari jarak jauh. Salah satu peralatan atau objek yang ada di rumah adalah tempat sampah yang umumnya terbuat dari plastik, tetapi umumnya belum dapat dipantau dan dikontrol otomatis. Tujuan penelitian ini adalah untuk merancang sistem kontrol untuk membuka dan menutup tempat sampah secara otomatis menggunakan Arduino sebagai pengontrol sistem, sensor ultrasonik sebagai pendeteksi objek yang mendekat, motor servo yang berguna untuk menggerakkan tutup tempat sampah, dan buzzer serta LED sebagai indikator ketika terdapat objek yang mendekat. Hasil pengujian sistem menunjukkan bahwa tempat sampah dapat membuka tutupnya secara otomatis saat mendeteksi objek pada jarak paling jauh 50 cm dengan delay selama dua detik, dan kemudian akan tertutup secara otomatis ketika objek tersebut menjauh dari tempat sampah tersebut.

Advances in automation technology in industries that run very fast have spurred every educational institution to be able to keep up. Every SMK is no exception, which is tasked with preparing and producing students to be able to compete in the world of work. One of the automation technologies is PLC and SCADA which are widely used in the industrial world, for this reason, it is necessary for Muhammadiyah Gresik University students, especially the Electrical Engineering study program, to share knowledge about one of the PLCs and SCADA by using Outseal as PLC and Haiwell as SCADA at SMKN Singosari, Malang in the form of community service activities. By providing training on the basics of PLC and SCADA using Outseal software as a PLC which is uploaded to Arduino and Haiwell as an HMI for SMK students in understanding the basics of PLC which is then followed by simulating cases that often occur in the industry. The results of the student response were very positive giving an assessment of more than 90% and wanting a similar training with a different theme.

Seiring perkembangan zaman dan teknologi yang pesat saat ini, dalamkehidupan sehari-hari manusia tidak pernah lepas dari aktivitasnya untuk berinteraksi dengan peralatan elektronik yang membantu dan mempermudah pekerjaan manusia. Salah satunya adalah brankas otomatis dengan keamanan menggunakan sensor facerecognition dan fingerprint supaya perhiasan dan barang berharga lainnya lebih terjamin keamanannya dengan sistem keamanan ganda pada brankas.   Proyek akhir ini bertujuan untuk mengembangkan sebuah teknologi yang memanfaatkan beberapa macam komponen sensor, dimana komponen sensor tersebut melibatkan sensor getar untuk mengirimkan sms gateway jika brankas berpindah tempat, dan sim800l akan mengirimkan titik kordinat brankas berupa sms gateway. Dan GPS akan melacak keberadaan brankas sesuai titik kordinat tersebut. Buzzer akan berbunyi untuk memberikan tandaatau notifikasi.

The research method used in this study is the research and development method or also called Research and Development. The research design that will be developed in this study uses the development model presented by Borgan Gall. The product produced in this study is an Arduino Nano-Based Distance Measuring Tool with a Display on the LCD on the Flat Side Room Building Material for Class VIII at SMP Negeri 5 Sepauk. The test subjects of this study included two subjects. The first subject is the validator and the second is class VIII students of SMP Negeri 5 Sepauk. The analysis technique used is to determine the effectiveness, practicality, and validity. The percentage of effectiveness from the average of the two analyzes obtained a percentage value of 94.06% with Very Effective criteria used in learning mathematics. The results of the combined teacher and student response questionnaires - the average percentage obtained was 89.55% with very practical criteria. The combined results of the average percentage obtained from the percentage of experts and the results of the measurement trials obtained a percentage of 76,36% with very valid criteria.    

This research aims to ease the work of freshwater ornamental fish breeders who use aquariums or can also be implemented in ordinary ponds. Usually cultivators work using extra (manual) labor to be more effective using tools.                This research is a type of development research with reference to the R & D (Research And Development) method.                The results of the study show that, in testing the tool can function properly. All components and sensors can function with 85% accuracy. Thus, Aquarium Water Replacement Automation Using Turbidity and Arduino Uno is suitable for use by cultivators.

This research aims to ease the work of freshwater ornamental fish breeders who use aquariums or can also be implemented in ordinary ponds. Usually cultivators work using extra (manual) labor to be more effective using tools.                This research is a type of development research with reference to the R & D (Research And Development) method.                The results of the study show that, in testing the tool can function properly. All components and sensors can function with 85% accuracy. Thus, Aquarium Water Replacement Automation Using Turbidity and Arduino Uno is suitable for use by cultivators.

In this final project the author discusses the problem entitled "Design of Smoke Detector and Room Temperature of SAP ERP Server at PT Apac Inti Corpora". This design aims to support the improvement of the security system in the server room with smoke and temperature detectors and microcontroller-based automatic countermeasures. Against the background of problems with sensors and countermeasures systems in the server room and lack of insight into sensor installation. This tool uses a gas sensor MQ-2 as a smoke detector, a DHT-11 sensor as a temperature detector, Arduino as a microcontroller that controls I/O, buzzer and LED as an alarm, a fan as a temperature controller, and an LCD to display conditions in the room. The output of the MQ-2 and DHT-11 sensors will be processed in a programmed microcontroller so that it can display conditions on the LCD. This tool will turn on the alarm and fan if smoke and high temperature are detected at the specified conditions.

Article history: Received 30 Mei 2020 Received in revised form 2 Juni 2020 Accepted 10 Juni 2020 Available online 12 Juni 2020 ABSTRACT Alcohol is the common name for organic compounds that have a hydroxyl group attached to carbon and hydrogen atoms. The alcohol that is commonly found in liquor is ethyl alcohol or it is also called ethanol, but it is usually referred to as alcohol alone. Drinks with an alcohol content of 40% can lose consciousness, leading to accidents for alcohol-affected drivers. To detect alcohol in the body using an alcohol tester. Researchers tried to make a measuring instrument for alcohol levels in the body using several components such as Arduino nano, MQ 3 sensor, OLED, charger module, battery, resistor, push button, and buzzer. The design of a portable alcohol level detector through breath can work well, namely the results of the reading of alcohol levels in the body by the MQ-3 sensor through the breath and displayed on the Oled Display in units of% BAC (Blood Alcohol Concentration), in the sample comparison of the alcohol level reading between Final project tool with a comparison tool alcohol tester obtained the percentage difference in an average of 0.01% BAC. Keywords: Alcohol, Arduino Pro Micro, MQ-3 Sensor, OLED, Charger Module, Battery, Resistor, Push Button, and Buzzer

Water is very important for all aspects of life on earth, agriculture is one of the fields that really need large amounts of water because of the use of water in the process of plant photosynthesis. Water that has good quality is if the water is not excessively polluted by harmful chemicals or minerals. One indicator that water is polluted is a change in temperature and pH (acidity) of the water. Temperatures that are too hot in the water will interfere with the growth of plants and other microorganisms. While the normal pH of water has a pH that ranges from 6.5 to 7.5. The quality of water and soil is very important in agriculture. The level of acidity (pH) and soil temperature are one of the things that affect plant fertility. Therefore, the quality of water and soil on agricultural land is one of the important things that needs special attention in its management. One solution so that water and soil quality can be monitored and managed efficiently is to utilize a Wireless Sensor Network based on the Internet of Things (IoT). The use of the ESP8266 Module as a WIFI module, is widely used by Internet of Things-based applications because the price is cheap so it reduces a lot of costs and has a fairly good speed of 80 MHz. This study aims to develop the concept of a Wireless Sensor Network by utilizing the ESP8266 module to monitor pH values using a pH Meter Analog Kit sensor and temperature from agricultural land using a DS18B20 Waterproof sensor and can be monitored at any time using a smartphone.

Menentukan warna dan ukuran baju di toko kavana berbasis arduino uno adalah sebah perkembangan teknologi supaya pemilik toko baju tidak perlu susah payah dalam menyortir warna dan ukuran baju yang masih berada didalam kemasanya. Namun sampai saat ini proses penyortiran baju di toko kavana masih manual yang sebagian besar masih dilakukan oleh manusia pada pihak toko. Penelitian ini bertujuan untuk membangun sebuah projek alat mikrokontroller yang berbasis arduino uno. Tidak hanya bisa untuk menyortir warna baju saja tetapi dengan alat ini juga bisa digunakan untuk menscane barcode yang berada pada kemasan untuk mengetahui ukuran beserta detail ukuranya.

Incremental rotary encoder is a sensor that can be used to measure the degree of rotation in ship steering simulations. To create a ship steering simulation, Visual Basic software was used to simulate the movement of the rudder and ship. Meanwhile, to obtain incremental rotary encoder reading data, serial communication is used via Universal Serial Bus (USB) media bridged by Arduino which is programmed to convert incremental sensor signals into ASCII signals with a bolt rate of 9600 bps. The aim of this research is to test the accuracy level of the incremental rotary encoder sensor in ship steering simulations using Visual Basic software on commercial ships by using the Solas rule that a ship's rudder must comply when rotated from the midship position to the 35 degree port side position followed by the 35 degree position. starboard side and returning to midship, the rudder movement time was less than 28 seconds. Test results in terms of response speed of the incremental rotary encoder sensor are very good, while in terms of accuracy level for one degree of steering rotation, the result is 4.571 on the Arduino IDE serial monitor reading..

Robot menjadi pilihan untuk membantu pekerjaan manusia mengatasi masalah kepresisian, keamanan, fleksibilitas dan pekerjaan yang berulang. Bidang industri merupakan salah satu bidang yang telah menggunakan robot dalam pekerjaannya untuk memenuhi kebutuhan konsumen dengan efesien, terutama dalam melakukan tugas pick & place yang membutuhkan keamanan, kecepatan, presisi dan konsistensi. Untuk mencapai tujuan tersebut dibuatlah robot delta yang cocok dalam melakukan tugas tersebut, terutama dalam industri pengemasan. Pada penelitian ini robot delta yang dibuat merupakan prototype yang memiliki ukuran kecil dan berbasis Arduino Mega 2560. Robot delta ini memiliki 3 DoF (Degree of Freedom) yang disusun secara paralel dengan konfigurasi segitiga. Aktuator robot ini menggunakan motor servo yang dikontrol oleh mikrokontroler dengan input yang berasal dari joysitck dan GUI melalui komunikasi serial. Input yang berasal dari joystick dan GUI diproses oleh mikrokontroler untuk melakukan perhitungan inverse kinematics yang telah diuraikan, sehingga mendapatkan hasil sudut untuk ketiga servo untuk mencapai posisi end-effector yang diinginkan. Selain secara manual, robot dapat dikendalikan secara otomatis dengan mode perekaman posisi.

Sistem kendali telah banyak diterapkan dan dimanfaatkan untuk membantu kinerja manusia seiring dengan perkembangan kebutuhannya. Segenap bidang yang tanpa terkecuali pada bidang kajian utama hal ini adalah bidang pertanian. Sasaran utama dlam kajian ini adalah para petani penggerk dan pembudidaya tanaman produktif jamur.                 Banyak pelaku dalam budidaya jamur tiram ini seolah-olah mulai usaha lalu berhenti, dimana beberapa kendala terjadi dan mengakibatkan penurunan aspek kualitas dan kuantitas hasil panen. Salah satu pengaruh utama dan terbesar adalah perubahan dan perbedaan iklim atau cuaca dari suatu musim ke musim berikutnya, dan dari tata letak geografissuatu daerah dengan daerah lainnya.                 Sementara itu dari bidang keilmuan spesifik yaitu ilmu komputer telah mengkaji tersendiri sebuah sistem dengan metode sistem pendukung keputusan, dan hal inilah yang akan menjadi bidang implementasi pada sebuah sistem bantu lapisan masyarakat pertanian, dengan melakukan penerapan SPK pada sistem kendali terpadu dan terprogram, terkait dengan permasalahan utama yaitu variabel suhu, kelembaban dan intensitas cahaya.                 Realisasi perangkat bantu yang menggunakan algoritma sistem pendukung keputusan terpadu tercipta dengan berhasil membuatnya dalam model alat kontrol menggunakan sensor Light Depending Resistor (LDR) dan sensor suhu beserta kelembaban. Hasil yang diperoleh berdasarkan fungsionalnya adalah nilai rata-rata suhu 25 - 31oCelcius, tingkat intensitas cahyaa pada 200 lumen dan kelembaban berkisar pada 25% - 81% RH. Sistem mampu berjalan dengan sempurna menggunakan kendali mikro Arduino dan telah terimplementasi pada beberapa lokasi mitra petani pembudidaya jamur tiram.

This Research is generally aimed at designing a system that can solve problems at Hotel Oyo Jakarta Selatan. In addition to the use of bathroom tools, there is a need for a gas controller in the bathroom space, especially ammonia gas and other gas in the bathroom. The bathroom control system at Hotel Oyo Jakarta Selatan is currently ineffective, in the use of the bathroom tools to hotel guests and hotel staff. The reseach method used by researcher is The research step begins with research and information gathering, then planning and developing the initial form of the product or system, and field testing the feasibility of the system or product, if there is a revision, it can be developed further before conducting the main field test. . Based on the research results, monitoring ammonia gas in rooms based on a microcontroller can be a solution for the Oyo South Jakarta hotel in monitoring rooms, both from guests or hotel employees more effectively and efficiently , and to facilitate the management of existing bathroom rooms in the Hotel Oyo Jakarta Selatan

Jamur tiram (Pleurotus ostreatus) merupakan komoditas pangan yang sangat diminati masyarakat selain kandungan nutrisinya yang tinggi jamur tiram juga dapat diolah menjadi berbagai ragam makanan, Jamur tiram tumbuh baik pada temperatur 16 - 30°C dan kelembaban relatif 80 – 95%, Intensitas cahaya yang optimum bagi jamur tiram yaitu intensitas cahaya rendah, atau bahkan tanpa adanya cahaya. Akan tetapi, pada saat fase tubuh buah dewasa jamur tiram tidak dapat tumbuh pada kondisi cahaya gelap, melainkan dapat tumbuh dengan optimal pada lingkungan yang agak terang. Menyikapi masalah diatas maka dari itu penulis ingin mencoba melakukan percobaan penelitian dengan menerapkan pencahayaan dalam ruangan (box) dengan tiga jenis warna lampu yaitu merah (Red), hijau (green) dan biru (blue). dan perlu adanya suatu alat yang dapat melakukan monitoring, serta pendataaan pertumbuhan tanaman jamur tiram yang kemudian akan diambil datasetnya. Alat monitoring dan pendataan secara realtime dengan menggunakan multi sensor berbasis arduino untuk pendataan pertumbuhan jamur tiram ini dibuat sistem aplikasi android sebagai media untuk pemantauanya, data yang ditampilkan di aplikasi monitoring adalah hasil pembacaan dari beberapa sensor yang dipakai antara lain dari sensor load cell, sensor ultrasonik, serta sensor LDR dan sensor DHT11, Sistem monitoring dan pendataan multi sensor ini juga memiliki fitur untuk melakukan penyimpanan data, hasil data disimpan di penyimpanan internal smartphone, sehingga dari data tersebut dapat digunakan sebagai bahan untuk mengambil keputusan dari obyek yang sedang dimonitoring tersebut.

Monitoring realizes efforts to improve the quality of health services. To obtain information on patient condition data during treatment. The monitoring process is done manually. So that it has an impact on the service and condition of the patient during treatment. The design of monitoring the patient's body temperature and heart during treatment with IoT can be controlled through the NodeMCU sensor ESP8266, MLX9014, MAX30100 sensor and Arduino IDE software program. Furthermore, it can detect the patient's temperature and the patient's heart rate during treatment. And processed by the NodeMCU ESP8266, the data from the two sensors is displayed on the SSD1306 OLED LCD and also to the smartphone of the medical officer on duty via Blynk. In order for the tool to work properly and optimally, it is necessary to adjust the pin placement so that it can work optimally. The problem of internet connection interference causes delays, resulting in a mismatch between the measurement of the test equipment and the standard tool. Data values are taken with an accuracy of 70%-93% for the MAX30100 sensor, for the temperature sensor it is close to optimal with a value that is read on a standard tool with an accuracy of 97%-99%.

The innovation of the robot cars today is moving very fast. The robot car is capable of being driven without using manual remote controls. One form of technological development in robot car control is by using hand gestures. The microcontrolle placed in the palm of the hand will read the direction of movement of our hands, then the instructions are transmitted to the robot car.  The transmission system used in the microcontrolled circuit in the palm of the hand and the receiver circuit inside the robot car must be properly attached. This is influenced by the quality of programming language levels and the arduino mini pro and MPU-6050 circuits. Hand gesture directional readings are able to be easily readable and directly transmitted by the NRF24L01 module via radio waves. The response power of the robot car in receiving hand-move instructions can be received as far as 45 m. In addition to using a good arduino mini pro, the addition of antenna modules will also increase the quality and distance of the connection is getting farther..

The sprayer is one of the equipments that is often used in agriculture, especially in rice plants to control pests and diseases. The use of the nozzle rod on the electric sprayer still uses hands resulting in the spray distance on the rice being not constant. To answer this problem, the researcher will create an innovative robotic hand holding the nozzle rod on an electric sprayer that will direct the nozzle rod constantly. Servo MG996r as a rectifier of the motion of the nozzle stem which will determine the distance and area of ​​spraying on rice. To achieve maximum dispersion in rice with a 4:1 legowo system with a servo rod length of 50 cm and a spacing between rice of 25 cm, the servo must move forward and backward at an angle of 110° - 180° which can be seen on the LCD and the distance of the nozzle rod on the object can be up and down to 38 cm and up 24 cm from the starting position. The results obtained by the robotic hand holding the nose bridge can work optimally.

The infrared detector (or IR detector) is an optoelectronic component and represents the core element of gas analyzers, flame sensors, devices of spectral analysis, as well as non-contact temperature measurement. pyroelectric infrared detectors work with  stabilization time  in a wide operating temperature range (-55 ... 85) °C, capable of measuring the slightest amounts of infrared radiation (as little as a fraction of a nW) with wavelengths between 1 µm and > 25 µm. The difference of the good pyroelectric or No good (NG) devices shown by graph of voltage offset operating that can check by manual using Digital Multi Meter or semi auto by using microcontroller One of importance measuring of IRD sensors  is Offset Voltage, stabilization of offset voltage indicate the sensor is stable with certain level value. Stabilization value measurement during measuring time means the average value not so much different with fluctuation value.  10 bit ADC on Atmega 328 that main microcontroller on Arduino Uno is capable to measure the Offset Voltage of IRD sensor and check the measurement values is within specification of IRD sensor.