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Rancang Bangun Alat Ukur Kadar Air Dalam Biji Kakao Berbasis Mikrokontroler Atmega-8 Hidayat Nur Isnianto; Nico Lastrada
Jurnal Rekayasa Elektrika Vol 9, No 4 (2011)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.252 KB)

Kualitas kakao salah satunya ditentukan oleh kadar air dalam biji kakao. Kadar air dalam biji kakao untuk mempertimbangkan harga jual dari biji kakao. Hal ini dilakukan pada saat proses jual beli biji kakao. Cara mengukur kadar air dalam biji kakao ada beberapa macam yaitu dengan menimbang berat biji kakao lalu dibandingkan dengan jumlahnya, pengeringan semua air pada biji kakao dengan proses oven, dan lain sebagainya. Pada penelitian ini akan dibuat alat ukur kadar air dalam biji kakao dengan metode penusukan wadah atau karung yang berisi biji kakao dengan garpu untuk mengukur resistansinya. Garpu merupakan sensor resistif yang nilainya berubah bergantung dari kadar air biji kakao. Dengan rangkaian inverting amplifier perubahan resistans diubah menjadi tegangan.Tegangan output inverting amplifier dibaca oleh ADC mikrokontroler Atmega-8, yang kemudian diolah dan ditampilkan pada LCD. Hasil pengujian menunjukkan alat ukur yang dibuat mampu mengukur besar kadar air yang terkandung dalam biji kakao pada range pengukuran kadar air dari 2% hingga 20% dengan prosentase kesalahan 0,05%.

Sistem Telemonitoring KWH Meter Menggunakan Modul Wi-Fi ESP8266 Berbasis Arduino Uno Hidayat Nur Isnianto; Muhammad Arrofiq; Rijeqi Rahmawati; Bagus Mulyo Tyoso
Jurnal Rekayasa Elektrika Vol 15, No 1 (2019)
Publisher : Universitas Syiah Kuala

The postpaid KWH Meter reading by officers is sometimes constrained to reach the physical KWH Meter because the house fence is locked or the KWH Meter is inside the house. This often causes problems such as reading errors and the officer must come to the customer several times. Therefore a telemonitoring system for KWH Meters is made through an online WiFi network to help officers record electricity usage for consumers. This system uses ACS712 current sensor, ZMPT101B voltage sensor, different phase sensor, RTC DS1307 as a timer and date, Arduino as a data processor, Micro SD Card for storing date, time, and sensor readings, LCD as a viewer, and transmitted with modules ESP8266 Wi-Fi to a smartphone or PC with a simple web display. The test results show that all components can function properly. ACS712 30A current sensor has an average error of 1%, and the ZMPT101B voltage sensor is capable of carrying out voltage readings in load or no load conditions with an average error of0.5% and a different phase sensor has an average error of 1% for resistive load and 4.2% for inductive loads of TL lights. Power measurements have an average error of 1.3% for 75W incandescent lamp loads and 300W irons. The ESP8266 Wi-Fi module emits a maximum of 15 meters when not blocked and 10 meters when blocked. All measurement data can be stored on the SD Card.

Analisis Performa Bluetooth pada Sistem Alarm Pengingat Barang yang Tertinggal dengan Smartphone Android Rafiqmia Khairuddin Nur Hammam; Hidayat Nur Isnianto; Sri Lestari; Y. Wahyo Setiyono
Jurnal Rekayasa Elektrika Vol 17, No 3 (2021)
Publisher : Universitas Syiah Kuala

Someone sometimes forgets to put their belongings so that they leave them somewhere, it will pose a risk of losing their belongings. To solve this problem, a reminder is needed so that it is expected to minimize the risk of loss. This device implements point-to-point communication from the Bluetooth Low Energy AT-09 transmitter module with Arduino Nano and the receiver module with an Android smartphone. This reminder device will activate an alarm on the Android smartphone application when the two modules are more than 5 meters away. The measured distance is converted from the Received Signal Strength Indicator (RSSI) value received by the smartphone which is affected by obstructions, packet loss, and delay. Based on the test results, at a distance of 5 meters, the system can be connected and work properly, in unobstructed conditions (Line of Sight) or obstructed conditions (Non-Line of Sight). In the blocked condition, it has a packet loss of 1.1% to 4.4%, the received signal strength (RSSI) has decreased the value to a difference of -8 dBm, and the delay time is 2 seconds.

Analisis Performa Bluetooth pada Sistem Alarm Pengingat Barang yang Tertinggal dengan Smartphone Android Rafiqmia Khairuddin Nur Hammam; Hidayat Nur Isnianto; Sri Lestari; Y. Wahyo Setiyono
Jurnal Rekayasa Elektrika Vol 17, No 3 (2021)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v17i3.20648

Someone sometimes forgets to put their belongings so that they leave them somewhere, it will pose a risk of losing their belongings. To solve this problem, a reminder is needed so that it is expected to minimize the risk of loss. This device implements point-to-point communication from the Bluetooth Low Energy AT-09 transmitter module with Arduino Nano and the receiver module with an Android smartphone. This reminder device will activate an alarm on the Android smartphone application when the two modules are more than 5 meters away. The measured distance is converted from the Received Signal Strength Indicator (RSSI) value received by the smartphone which is affected by obstructions, packet loss, and delay. Based on the test results, at a distance of 5 meters, the system can be connected and work properly, in unobstructed conditions (Line of Sight) or obstructed conditions (Non-Line of Sight). In the blocked condition, it has a packet loss of 1.1% to 4.4%, the received signal strength (RSSI) has decreased the value to a difference of -8 dBm, and the delay time is 2 seconds.

Pembangkit Gelombang Terprogram Menggunakan DDS AD9851 Berbasis Mikrokontroler 18F4550 Wisnu Adji Kharisma; Hidayat Nur Isnianto
Jurnal Rekayasa Elektrika Vol 11, No 1 (2014)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v11i1.1989

Direct Digital Synthesizer (DDS) applies a method to generate an analog waveform in a digital manner, which is formed by generating a digital signal that varies with time and converting it into analog form using a digital to analog device (DAC). IC AD9851 is an analog waveform generator to implement the DDS method, which generates a frequency that can be changed according to the needs of its users. The digital signal is generated using a PIC 18F4550 microcontroller that has a full-speed USB 2.0 feature to interface with the computer via USB without the need of special drivers to do the communication. Setting of the output frequency can be done via the keypad or buttons programmed via computer. The test results are a wide range of frequency waves produced from 100 Hz to 30 MHz in the form of a sine wave with an amplitude of 430 mV and a square wave with an amplitude of 4,125 V.Keywords: DDS, AD9851, PIC 18F4550, USB, function generator

Sistem Telemonitoring KWH Meter Menggunakan Modul Wi-Fi ESP8266 Berbasis Arduino Uno Hidayat Nur Isnianto; Muhammad Arrofiq; Rijeqi Rahmawati; Bagus Mulyo Tyoso
Jurnal Rekayasa Elektrika Vol 15, No 1 (2019)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v15i1.12968

The postpaid KWH Meter reading by officers is sometimes constrained to reach the physical KWH Meter because the house fence is locked or the KWH Meter is inside the house. This often causes problems such as reading errors and the officer must come to the customer several times. Therefore a telemonitoring system for KWH Meters is made through an online WiFi network to help officers record electricity usage for consumers. This system uses ACS712 current sensor, ZMPT101B voltage sensor, different phase sensor, RTC DS1307 as a timer and date, Arduino as a data processor, Micro SD Card for storing date, time, and sensor readings, LCD as a viewer, and transmitted with modules ESP8266 Wi-Fi to a smartphone or PC with a simple web display. The test results show that all components can function properly. ACS712 30A current sensor has an average error of 1%, and the ZMPT101B voltage sensor is capable of carrying out voltage readings in load or no load conditions with an average error of0.5% and a different phase sensor has an average error of 1% for resistive load and 4.2% for inductive loads of TL lights. Power measurements have an average error of 1.3% for 75W incandescent lamp loads and 300W irons. The ESP8266 Wi-Fi module emits a maximum of 15 meters when not blocked and 10 meters when blocked. All measurement data can be stored on the SD Card.

Rancang Bangun Alat Ukur Unting-unting Digital dan Waterpass Digital dengan Accelero Sensor Berbasis Mikrokontroler ATmega8 Hidayat Nur Isnianto; Ali Ridho
Jurnal Rekayasa Elektrika Vol 10, No 3 (2013)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v10i3.1015

Measurement process of concrete mold erectness (bekesting) and the floor slope was generally conducted using conventional method applying a plummet (pendulum) for bekesting erectness and waterpass for the floor slope. The drawbacks of this method are it requires a relatively longer processing time and the outcome of the slope measurement is not represented in degrees. The measurement of digital plummet and digital waterpass is easier as the measurement time is relatively short and the tilt angle is represented in degrees. This paper describes a design and implementation of digital plummet and waterpass using Accelero Sensor MMA 7361L based on microcontroller ATmega8. The Accelero sensor MMA 7361L was used to read the tilt axis x, y, and z with analog voltage output that is converted into digital form using the ADC on the microcontroller. Based on the results of tools test for bekesting erectness and floor slope measurement, it was obtained that the average error were 0.51% and 0.49% for x-axis and y-axis respectively.

Web-Monitoring Based Visualization of Virtual Laboratory User Data on Openstack Telemetering Components Lizadi, Prajaka Brian; Isnianto, Hidayat Nur
Journal of Internet and Software Engineering Vol 1 No 1 (2020): Journal of Internet and Software Engineering
Publisher : Department of Electrical Engineering and Informatics, Vocational College, Universitas Gadjah Mada

Currently the use of Cloud computing to meet human necessity was become more common. Cloud computing more comfort provide given because of his model is placed in a container and allows easily accessible according to necessity in various locations. One of the Cloud computing platform that is widely started using are Openstack , because of the ability to manage and regulate the entire system through a web-based dashboard, the command line and through RESTful API. One of the supporting components computing system on a platform Openstack is a project that serves as a Ceilometer telemetering data to present the results of the monitoring, but it is still the raw data that require interface for communication data and human beings. This research created a system of data visualization as an interface to use by admin and users in monitoring data usage per instance on a virtual laboratortium. The result from this research is web monitoring interface with differents graphic type and specification to engage admin requirement for analisys in virtual laboratory activity.

Bluetooth Performance Analysis on Device Reminder System Based on Distance Measurement and Received Signal Strength Indicator. Hammam, Rafiqmia Khairuddin Nur; Isnianto, Hidayat Nur
Journal of Internet and Software Engineering Vol 2 No 1 (2021): Journal of Internet and Software Engineering
Publisher : Department of Electrical Engineering and Informatics, Vocational College, Universitas Gadjah Mada

Internet of Things (IoT) is one of technology that is currently being developed and widely applied invarious sectors. That is supported by the development of IoT device infrastructure which is increasingly sophisticatedand modern so its capable to meet various needs in its application. IoT can also be applied as a tool to assist one'sactivities in daily life within scope of a private network which are called Personal Area Network (PAN), one of themas a reminder tool. Reminders can be used to remind a person on an important condition such as stuff that dropbehind. Sometimes a person forgets to put his stuff so it left behind in a place, and it will bring up a risk that is loss ofstuff. To help the problem is required a reminder device that is expected to minimize the risk that may occur. Thisdevice applies a point to point communication consisting of one transmitter module that is Bluetooth Low EnergyAT-09 and one receiver module that is Android smartphone. This reminder device will activate the alarm on Androidsmartphone when both modules are spaced more than 5 meters. Then, from the implementation of this system will doan analysis of quality of service based on the value of Received Signal Strength Indicator (RSSI) and the distancebetween the two modules. Quality of service’s parameters which will analyze is delay and packet loss. Based on testresults, signal strenght value (RSSI) and packet loss parameters are strongly influenced by barricade media, becausewhen both modules are in unobstructed condition they are indicates a stronger signal strength value and few packetloss occurs. While for the delay parameter is influenced by the data rate transfer of bluetooth devices.Keywords : RSSI, Distance, Bluetooth Low Energy, Quality of Service, Reminder

Prototipe Akses Pintu Masuk Stadion Terintegrasi dengan Kartu RFID sebagai Tiket Berbasis Arduino Uno ISNIANTO, HIDAYAT NUR; AGUSTIAN, ADAM
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 7, No 3: Published September 2019
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v7i3.415

ABSTRAKSepak bola merupakan olah raga yang digemari masyarakat sebagai hiburan. Di stadion sering dijumpai penonton tanpa tiket atau dengan tiket palsu, sehingga menyebabkan kerugian penyelenggara. Pada makalah ini dibuat prototipe akses masuk stadion dengan mengimplementasikan Radio Frequency Identification (RFID) untuk tiket dan kunci akses pintu masuk stadion, dengan tujuan mencegah penonton masuk ke stadion dengan tiket palsu atau tanpa tiket, dan tiket dapat dimanfaatkan kembali. Sistem ini menggunakan RFID tag berbentuk kartu sebagai tiket dan dibaca dengan RFID Reader RDM 6300 untuk dibandingkan dengan data yang disimpan pada SD Card, jika sesuai maka solenoid aktif dan penonton dapat masuk stadion, sedangkan jika tidak sesuai, maka pintu stadion tidak dapat dibuka.Â Dari hasil pengujian, sistem mekanik dapat berfungsi sesuai dengan YangÂ diharapkan dan seluruh RFID tag dapat dikenali dalam jarak optimal 3 cm. Keseluruhan pengguna yang telah terdaftar dapat membuka pintu.Kata kunci: Tiket, Stadion, Arduino, RFID, RDM6300Â ABSTRACTFootball is a sport that is loved by society as an entertainment. In stadiums, there are often spectators without tickets or with fake tickets, causing losses to the organizers. In this paper a prototype of stadium entrance access was made by implementing Radio Frequency Identification (RFID) for tickets and access keys to stadium entrances, with the aim of preventing viewers from entering the stadium with fake tickets or no tickets, and tickets can be reused. This system uses cardshaped RFID tags as tickets and is read with an RDM 6300 RFID Reader to be compared with data stored on the SD Card, if it matches then the solenoid is active and the viewer can enter the stadium, whereas if it is not appropriate, the stadium door cannot be opened. From the results of testing, the mechanical system can function as expected and the entire RFID tag can be identified at an optimal distance of 3 cm. All registered users can open the door.Keywords: Ticket, Stadium, Arduino, RFID, RDM6300

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