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All Journal Prosiding Semnastek JURNAL NASIONAL TEKNIK ELEKTRO Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Journal of Information Technology and Computer Engineering Jurnal Hilirisasi IPTEKS (JHI) IJIES (International Journal of Innovation in Enterprise System) Jurnal Teknoif Teknik Informatika Institut Teknologi Padang CHIPSET (Journal on Computer Hardware, Signal Processing, Embedded System and Networking) Aceh International Journal of Science and Technology Jurnal Rekayasa elektrika
Hersyah, Mohammad Hafiz
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Health Professions Public Health Veterinary Other

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Identifikasi Rancang Bangun Alat Ukur dan Sistem Kendali Kadar Total Dissolved Solid (TDS) Pada Air Berbasis Mikrokontroller Hersyah, Mohammad Hafiz
JITCE (Journal of Information Technology and Computer Engineering) Vol. 1 No. 01 (2017)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jitce.1.01.26-34.2017

Abstract

In this study, the total dissolved solid (TDS) in water was made using conductivity sensor which the sensor works by using the principle of conductance that is the ability of the solution in delivering the electric current, so the more content of solute contained in the water the greater also the value of its conductance. The measurement results of the sensor will be compared with the next setpoint value will be used to turn on the booster pump which will do the filtering process in order to decrease the TDS water content by using RO membrane. The performance of sensor readings when first used is boosted by the time at which the system takes 3 minutes to reach a stable state, while for the whole system is influenced by the volume of water that will decrease its TDS level. The test results are presented in the form of graph of change of TDS water content over time, the difference of time required to decrease the TDS level by 15 ppm for 1 liter of water for 6 minutes, 2 liter of water for 10 minutes and for 3 liters of water for 16 minutes.
Rancang Bangun Prototipe Sistem Otomatisasi Pengereman Elektromagnetik Berbasis Mikrokontroler Dengan Kontrol PID Hersyah, Mohammad Hafiz; Firdaus, Firdaus; Nesya, Hamidatul
JITCE (Journal of Information Technology and Computer Engineering) Vol. 2 No. 01 (2018)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jitce.2.01.41-50.2018

Abstract

Braking Automation system is needed to make people do their job in braking while driving. This paper aims to design and construct an electromagnetic braking automatic system that able to make car stopped before colliding a barrier by applying of the Proportional Integral Derivative (PID) method. To find out how the effective utilization of PID control on electromagnetic braking automatic will be compared with the results of braking without using PID. Determination tuning result of controller PID parameter obtained by using the trial and error methods and obtained the PID parameter values that suitable are Kp = 2.98, Ki = 0.104 and Kd = 1.35. The ultrasonic sensor used as detection the distance to a barrier. From the testing results of electromagnetic braking system with PID control more effective than with the electromagnetic braking system without PID because it can be seen from the side cessation of the car approaching set point, the results of the electromagnetic braking with PID control better than the electromagnetic braking without PID control.
Identifikasi Penyakit Diabetes Mellitus Melalui Nafas Berbasis Sensor Gas Dengan Metode Fast Fourier Transform dan Backpropagation Hersyah, Mohammad Hafiz; Andrizal, Andrizal; Revinessia, Revinessia
JITCE (Journal of Information Technology and Computer Engineering) Vol. 2 No. 02 (2018)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jitce.2.02.85-91.2018

Abstract

The purpose of this research is to detect whether a person has diabetes mellitus or not. In people with diabetes mellitus uncontrolled will result in a decline in the rate of saliva that results in bad breath. The system uses the sensor TGS 2602 and MQ 4. It's function is to detect the levels of Hydrogen Sulfide and Methan in a person’s breath. The decision is made by using the neural network with a backpropagation method. The result for 5 (five) tests of diabetes mellitus samples can be detected with a success rate of 80%, whereas using random samples, the test detected with detected with a success rate of 80% samples that didn’t contain diabetes mellitus. This system could provide a solution for testing if a person is suffering from diabetes mellitus
Rancang Bangun Sistem Reservasi Ruangan Menggunakan Near Field Communication (NFC) Berbasis Mikrokontroller Fadhil, Rahmad; Hersyah, Mohammad Hafiz
JITCE (Journal of Information Technology and Computer Engineering) Vol. 4 No. 02 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jitce.4.02.95-104.2020

Abstract

Current technological developments also help in the ordering system. Simplifying the reservation system with information technology is one of the innovations made to help users of the room more easily in booking a room. The system designed consists of hardware and software connected to book a room based on, UID, usage time and to open the door of the room. Hardware includes Arduino Mega, NFC tags, NFC readers, relays, solenoids, buzzers, and LEDs. The software includes a Mysql website and database. The system will store user data, date, shift, length of usage and type of room booked by the user. NFC tags will be used by the customer to open the door to the room by getting closer to the NFC reader. This system aims to facilitate the process of borrowing space without having to undergo a convoluted process.
A Proposed Model of Digital Forensic on Cloud Computing Security Infrastructure Savitri, Sekar Ayu; Hersyah, Mohammad Hafiz
International Journal of Innovation in Enterprise System Vol. 2 No. 2 (2018): International Journal of Innovation in Enterprise System
Publisher : School of Industrial and System Engineering, Telkom University

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Abstract

Over the past decades, practitioners and researchers have made remarkable achievements in digital forensic. The abilities to conquer major technical obstacles are bestowing practitioners greater access to digital evidence. Sophisticated forensic techniques and tools are being developed to assist forensic acquisition and extraction of volatile data, inspection of remote repositories system and analysis of network traffic. Computer forensic is a comprehensive work that based on several attributes that are : objectivity, relevance and legitimacy to compose a system model that projected to be an electronic evidence forensic system. Latest studies show that the rapid growing of cloud computing facilities usage that has enable various improvements as part of the innovation process at organisations. Information systems are in frequently exposed to various types of threats which able to trigger different types of bad consequences as more and more information stored, problems arise especially about security information technology risk aspects. Keywords—computer forensic, cloud computing, electronic evidence forensic system, security, information technology risk, information system
The Effect of Motivation-Opportunity-Ability (MOA) Framework in SME's Social Media Marketing Adoption Hersyah, Mohammad Hafiz; Hadining, Aulia
International Journal of Innovation in Enterprise System Vol. 4 No. 1 (2020): International Journal of Innovation in Enterprise System
Publisher : School of Industrial and System Engineering, Telkom University

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Abstract

This research aimed to find out the factors which affected UKM/SME (small and medium sized enterprises) in adopting Facebook Ads. The factors utilized adoption model which has been developed in previous research by inserting Opportunity and Ability factors as a moderating effect between the influence of intention to use facebook ads toward the adoption of facebook ads. The background of this study was the need for the demand for the use of information technology, especially social networking in SME communication with consumers. This was intended to make SMEs survive in current technological developments. The model used in this research consisted of ten variables with nine hypotheses. Based on a survey of 100 SMEs in Indonesia, it was found that social image and perceived usefulness had a positive influence on intention to use Facebook Ads. However, there was no moderation effect from the Opportunity and Ability variable groups toward the relationship between Intention to use Facebook ads to Facebook Ads Adoption.
Leveraging Microcontroller-Based approach on Automatic pH Control, Monitoring, and Feeding System for Catfish Aquaculture. Azmi, Ahmad Nurul; Hersyah, Mohammad Hafiz
JITCE (Journal of Information Technology and Computer Engineering) Vol. 9 No. 1 (2025)
Publisher : Universitas Andalas

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Abstract

Fisheries cultivation is beginning to experience improvement and enthusiasm within the community. Especially the cultivation of catfish, which is gaining quite a lot of enthusiasts. This is caused by catfish that are easy to cultivate, have high demand within the community, and are rich in protein. The increase in catfish enthusiasts is based on the period from 2018 to 2019, during which the growth of catfish has increased by 27.76%. The increase in catfish production reached 1,005,530 tonnes in 2018 and 1,224,360 tonnes in 2019.Along with the advancements in technology for cultivating feed catfish, which meet the energy and growth needs, there should be sufficient resources to achieve a maximum harvest. However, lately, many cultivators have failed. This is due to several problems, including the intensity of irregular feeding and unstable catfish pool water levels, which resulted in the growth of catfish not yet fully implemented by cultivators. Consequently, many catfish cultivators suffered losses. Technology will help improve the quality of catfish feed. The basic principle of catfish cultivation is how the system can maintain a suitable water quality for catfish so that the risk of death does not occur because too Low or too high pH can have a harmful effect on catfish. pH itself is the degree of acidity used to declare the level of acidity or pH that a solution has. The components used in the design of this tool include pH sensors to read acid levels in catfish pool water, selenoids for controlling the flow of pH-adjusted liquid, load cell sensors for calculating the weight of the feed, and a servomotor to open the fish feed valve
Condition Monitoring System and Automatic Air Cleaning in the Toilet of Firebase-Based Andalas University Lecture Building Multri Okta Ilham, Randa; Hadelina, Rizka; Hersyah, Mohammad Hafiz; Arief, Lathifah
CHIPSET Vol. 6 No. 02 (2025): Journal on Computer Hardware, Signal Processing, Embedded System and Networkin
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/chipset.6.02.117-123.2025

Abstract

Maintaining the cleanliness and comfort of toilets in lecture buildings is very important for the quality of the campus environment. This study develops a Firebase-based Automatic Air Condition Monitoring and Cleaning System in the restrooms of Andalas University lecture halls. The main problem identified is the lack of direct monitoring, which leads to the appearance of unpleasant odors and potential health problems. A survey showed that 64.8% of respondents sometimes felt unpleasant odors, while 59.3% indicated a lack of adequate air circulation.To solve this problem, the designed system is able to detect and monitor toilet conditions in real-time through gas measurements such as ammonia, hydrogen sulfide, and carbon monoxide using MQ-135, MQ-136, and MQ-7 sensors, the results of which can be monitored through a website. The system not only monitors, but also controls air quality by turning on the exhaust fan when the gas level exceeds a certain. Tests show that the system is accurate in detecting gas, with sensor precision above 90% and an average data transmission time of 1.74 seconds. However, the humidity measurement showed an error rate of 32.36%. The system effectively improves the hygiene monitoring of restrooms, thereby improving comfort and health on campus
Co-Authors - Andrizal Anak Agung Gede Sugianthara Andrizal Andrizal Anisa Muhaimin Atillah Sridany Putri Azmi, Ahmad Nurul Budi Rahmadya Citra Berliana Derisma Derisma Dodon Yendri Eno Marozi Fezya Noviratama Firdaus Firdaus Firdaus Firdaus Firdaus Gentha Wijaya Hadelina, Rizka Hadining, Aulia Haditya Fajri Hamidatul Nesya Khairul Fikri Lathifah Arief, Lathifah Multri Okta Ilham, Randa Nefy Puteri Novani Nela Fatma Nesya, Hamidatul Ni Luh Ari Yusasrini Ozil Afindra Putra Purwoko, Agus Rahmad Fadhil Ratna Aisuwarya Revinessia Revinessia Revinessia, Revinessia Ririn Putri Anedya Savitri, Sekar Ayu Werman Kasoep Yan Heriyandi Yolanda, Desta Zaini Zaini Zaki Minango Dasman Zakky Aulia