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All Journal Academia Open Journal of Electrical Engineering and Computer (JEECOM) Indonesian Journal of Innovation Studies PELS (Procedia of Engineering and Life Science) Procedia of Social Sciences and Humanities Malcom: Indonesian Journal of Machine Learning and Computer Science Media Bina Ilmiah

Akhmad Ahfas

Universitas Muhammadiyah Sidoarjo

Author-ID : 4223258

Agriculture, Biological Sciences & Forestry Arts Humanities Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Medicine & Pharmacology Nursing Physics Social Sciences Other

Published : 14 Documents Claim Missing Document

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Design and Build Integrated Water Filter Automation for Android Smartphones (IoT) Moch. Dani Septiyan; Izza Anshory; Akhmad Ahfas; Jamaaluddin Jamaaluddin
Indonesian Journal of Innovation Studies Vol. 14 (2021): April
Publisher : Universitas Muhammadiyah Sidoarjo

In the internet of things, one of the current developments is smartphone-based water automation which makes it easier for users to control water. The working principle of this research is the water contained in the water storage tank if the water level is below 25 cm then the water pump (water input) will be active until the water is above 25 cm. Then the solenoid valve (water output) can be opened and closed via the Blynk application. When the solenoid is opened, the water in the holding tank will pass through filters 1 and 2 into the filter reservoir. The water in the filtered reservoir will measure the level of acidity and turbidity and then display it on the Blynk application. The results of this study, the water filter can reduce the level of turbidity of water by 0.568 NTU and increase the level of acidity by 0.132. The PH sensor used has an accuracy rate of 93.53%. The Turbidity sensor or turbidity has an average of 1.00 NTU in measuring clean water (Aqua).

Smartphone-Based Digital KWH Meter and SMS Gateway in Residential Homes Moh. Muzakki Firmansyah; Akhmad Ahfas; Syamsudduha Syahrorini; Dwi Hadidjaja Rasjid Saputra
Procedia of Engineering and Life Science Vol 1 No 1 (2021): Proceedings of the 1st Seminar Nasional Sains 2021
Publisher : Universitas Muhammadiyah Sidoarjo

Consumers need to be conscious of electrical energy usage every day, in accordance with the need for power consumption. Then a kWHmeter is needed that will provide this data so that people can handle it. This study developed a kWHmeter that can show Smartphone voltage, current, fuel, overall usage and projected electricity costs and can submit alerts when electricity use is near to a preset limit using the SDM230 Modbus, Arduino Uno, NodeMCU ESP8266, GSM module, MySQL database. In this research, with a precision of 98.704% for voltage, 39.88% for current, 53.333% for energy usage, and 26.14% for power energy, test results of the instrument can be operated very effectively. The method will also submit SMS alerts with an average speed of 0.6 seconds for this analysis and the android program is made to show data on the 100% accuracy of energy usage and 99.508% accuracy of cost estimates.

Design of CDI (Capasitive Discharge Ignition) and Motor Spark Plugs Test Kits Alamur Rosidil Wafa; Akhmad Ahfas
Procedia of Engineering and Life Science Vol 1 No 1 (2021): Proceedings of the 1st Seminar Nasional Sains 2021
Publisher : Universitas Muhammadiyah Sidoarjo

The Ignition on a motorcycle is an electrical system that produces sparks in the combustion chamber. If there is a mass of ferromagnetic material moving closer to the sensor, then the pulser will generate an electric current. Greater the electric current it generates. With the working principle of such a pulser, it can be used as a rotation sensor and sent to the ignition coil to produce a higher voltage which will produce sparks at the end of the spark plug electrode. The perfection of the system affects the motor work system. A good CDI condition will make it easier to increase the RPM (Rotations Per Minute) and when the spark plugs are in good condition, the motorbike's performance is getting optimal. There can be a useful tool for analyzing the damage to the CDI and the spark on the spark plug by integrating the electronic system in the motor ignition system. An electronic circuit that connects the motorcycle's ignition system through the output of the pulser circuit signal, which triggers the CDI input instead of the pulse magnet. Because the CDI and motor spark plugs are one of the main components that play an important role in the performance of the combustion motor. So that the electrical system can work without using mechanics and can be used as a tool to be able to analyze CDI damage and motor spark plug performance because CDI and spark plugs are some of the main components that play an important role in combustion motor performance. The result is that the tool can test CDI and motor spark plugs efficiently after which it can conclude the damage and can distinguish the characteristics of the CDI and the motor plugs.

Telegram Based Smart Sink with Voice Guide Donny Wiraputra; Izza Anshory; Akhmad Ahfas; Arief Wisaksono
Procedia of Engineering and Life Science Vol 1 No 2 (2021): Proceedings of the 2nd Seminar Nasional Sains 2021
Publisher : Universitas Muhammadiyah Sidoarjo

Hands are the main medium of carrying germs, bacteria, and viruses when doing activities, so hand washing is a necessity to prevent the spread of various diseases. The purpose of this research is to innovate the sink to make it more interesting because this tool can remind people in front of it. It is also the application of health protocols in the global pandemic. This tool is equipped with an HC-SR04 sensor to detect humans, then the speaker sounds an invitation to diligently wash your hands. This tool can work automatically when the Proximity sensor near the faucet detects the hand, it activates the soapy water pump for 3 seconds, then pauses 15 seconds, and then releases clean water for 10 seconds, then the speaker reads the handwashing guide. To prevent running out of water and soap, the HC-SR04 sensor is equipped to detect the capacity of tendons connected to notifications via telegram. The result is HC-SR04 accuracy in detecting people by 99.4%, reading the water level of 98.3% and soapy water 98.2%, notifications using Telegram successfully sent within 220-250 seconds for 5 experiments, the best Simcard used is Telkomsel with an average time of 21.6 seconds.

Implementation of RFID for Verification of PC Usage in the UMSIDA’s Electrical Engineering Laboratory Based on the Internet of Things Muhammad Drajad Kuncoro Aji; Jamaaluddin Jamaaluddin; Izza Anshory; Akhmad Ahfas
Procedia of Engineering and Life Science Vol 1 No 2 (2021): Proceedings of the 2nd Seminar Nasional Sains 2021
Publisher : Universitas Muhammadiyah Sidoarjo

Every day visitors to the UMSIDA electrical engineering laboratory have different goals. The main function of the laboratory is as a practicum for electrical engineering students and is also used to work on coursework. This study aims to control the use of laboratory PCs using Internet of Things-based RFID card verification. The application of RFID connected to the Wemos D1 Mini is expected to be able to reduce unexpected actions such as theft and hacking of data on the PC. The PC will be installed with an RFID reader to verify the RFID card as the initial stage of PC use. The results of the research trials showed that by bringing the RFID card from 0 cm to 2.5 cm closer to the RFID reader, the RFID card was successfully verified effectively. When the RFID card is successfully verified by the RFID reader, the PC will automatically turn on, the verification results will be displayed on the 16 x 2 LCD and android smartphone so that they can monitor every time and get an android notification that sends information that the verification process was successful and the PC is on. Laboratory PCs are safer from unwanted use by using RFID technology that is connected to the Wemos D1 Mini for monitoring and controlling via a smartphone remotely in real-time because before using a PC, it must go through a verification process.

IoT-Based Car Monitoring Engine Mounting Design Dwiki Maulana Rizaldi; Arief Wisaksono; Dwi Hadidjaja Rasjid Saputra; Akhmad Ahfas
Procedia of Engineering and Life Science Vol 2 No 2 (2022): Proceedings of the 4th Seminar Nasional Sains 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Vehicle technicians in checking the condition of the car's engine mounting do it manually, namely, through sight and hearing. This kind of manual method often makes an error in diagnosing engine mounting damage, because each individual has a different level of hearing and vision sensitivity. This research aims to make it easier for technicians to check the feasibility level of engine mounting with accurate data. This tool is based on IoT technology, where the reading of graphs from sensors in analyzing engine mounting damage using a website display and a 20 x 4 LCD. For its data storage with MySQL Database. In its working principle, it uses the K-Nearest Neighbor (KNN) algorithm method, in order to distinguish between engine mounting that is still good and damaged. Graph readings based on normal and abnormal range data from the data retrieval of the engine mounting of the new unit car. The vibration sensor used is the ADXL345 and also several other sensors such as the temperature sensor (MLX90614) and the sound sensor (KY-037). It uses the Arduino UNO R3 microcontroller and the Esp8266 NodeMCU as a data sender to the server. Tests were carried out on cars in idling conditions of 1000-1300 rpm. From the results of the study produced standard feasibility for vibrations from 3 axes (x = 1.60 ; y = 1.60 ; z = 1.90), temperature = 30 °C, Sound = 71 dB.

Dust Cleaning System on Panel PET Preform Injection Machine BM500 Muhammad Syaiful Azis; Indah Sulistiyowati; Akhmad Ahfas; Izza Anshory
Procedia of Engineering and Life Science Vol 2 No 2 (2022): Proceedings of the 4th Seminar Nasional Sains 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v2i2.1277

Dust Cleaning System on Panel Injection Machine BM500 PET preforms. The clean machine panel is essential so that performance and safety are maintained. Dust that sticks to electrical components such as contactors, servo drives, solid-state relays, PLCs, and several other components causes overheating. Dust attached to the conductors of electrical components will burn and become carbon which bridges the emergence of sparks. To reduce the risk of damage to electrical equipment on the injection machine, an automatic dust cleaning system is designed. This system uses a GP2Y1010AU0F dust sensor, a DHT 22 sensor to detect temperature and humidity, Arduino Uno microcontroller, 16x2 LCD, L298N driver, DC motor, fan, solenoid valve and utilizes high-pressure air to spray dust inside the panel which is then sucked in with a fan and collected in a dust bag. From the results of the trial installation of this system with 10 times of data collection for 4 hours 30 minutes with an interval of 30 minutes, it can be seen that the dust cleaning process runs 2 times. After the cleaning process is running the data shows that the dust density can drop to 0.16 mg/m³. Likewise, the temperature inside the engine panel, after the air circulation process runs well in the first or second conditions, the temperature inside the panel can drop below 40°C. From the test results, it can be seen that the system can work well.

ID Cart Sebagai Charger Hp Berbasis Energi Terbarukan Akhmad Ahfas; R. Dwi Hadidjaja R.S; Syamsudduha Syahrorini
Procedia of Social Sciences and Humanities Vol. 3 (2022): Proceedings of the 1st SENARA 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pssh.v3i.237

Energi cahaya matahari tidak pernah habis memberikan manfaat posistif bagi kehidupan. Selain untuk mempermudah penglihatan, cahaya merupakan suatu energi tepat guna yang sangat bermanfaat apabila mampu memaksimalkan energy tersebut. Salah satu pemanfaatan tepat guna dari energi cahaya matahari adalah sebagai sumber energi listrik. Oleh karena itu dibuat suatu sistem control tepat guna. Dengan menggabungkan energi cahaya matahari dan alat kontrol untuk mengkonversikan energi cahaya matahari menjadi energi listrik. Dalam hal ini output sel surya terhubung ke sebuah rangkaian penguat arus, agar dapat digunakan sebagai media untuk charger HP. Output dari rangkaian mampu menghasilkan arus maksimal hingga 250 mA dengan tegangan maksimal 12 volt. Outputnya diseri dengan diode zener 3,7 volt agar sesuai dengan input pada HP. Dalam waktu 2 jam 48 menit mampu mengisi baterai HP dengan daya 3,7 volt dan arus 500 mA dapat mengisi ± 90 %.

Paid Board Prototype With Monitoring Google Sheet Rakhmad Fajar Ashari; Arief Wisaksono; Indah Sulistiyowati; Akhmad Ahfas
Procedia of Engineering and Life Science Vol 3 (2022): Proceedings of the 5th Seminar Nasional Sains 2022
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pels.v3i0.1308

Many people prefer the money deposit box as a method of money storage even if there are many different types of useful places to do so. As a result, a Banknote Piggy Bank Prototype with Google Sheet Monitoring was created. a device that provides data on the amount of money saved. to use RFID as an access tool to scan ID cards. Three ID cards are included with this tool: a savings ID card, an unregistered ID card, and an ID card that may be used to withdraw money from savings accounts. The TCS34725 sensor is used in the design to read the money's nominal value and detect color. 20X4 LCD is being used as a display. can use a Wemos d1 small to monitor data after it has been saved and shown in a Google SpreadSheet. The piggy bank door lock employs a Servo Motor SG 90 for media, a Relay to start the motor, and an RTC Ds1307 to display the time and date. For use as a method of lowering the voltage in the system circuit is the LM2596 Regulator module. While the entire system needs an Arduino Microcontroller to be controlled.

Smart Shoe Care: Enhancing Drying Efficiency and Material Preservation Dwi Hadidjaja; Akhmad Ahfas; Syamsudduha Syahrorini; Shazana Dhiya Ayuni
Academia Open Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.6117

This scientific article presents a novel approach to address the challenges of shoe drying by developing a controlled shoe drying system. The system utilizes a NodeMCU ESP8266 microcontroller with internet connectivity, enabling monitoring and control of the drying process via a smartphone application. By integrating temperature and humidity sensors, the system optimizes the drying time and prevents damage to shoe materials, thus ensuring the preservation of their quality. The research objectives were to enhance drying efficiency, reduce drying time, and maintain the integrity of shoe materials. Experimental methods involved the design and implementation of the system, followed by rigorous testing and evaluation. The results demonstrated significant improvements compared to conventional shoe dryers, reducing drying time from 1-2 days to an efficient duration. The implications of this research are profound, as the developed system offers a sustainable solution to shoe drying, contributing to the preservation of shoe materials and reducing wastage. The findings have relevance for the global footwear industry, with potential applications in shoe care services and consumer households alike. Highlights: Efficient shoe drying: The developed controlled system optimizes the drying process, reducing the drying time significantly compared to conventional methods. Material preservation: The integrated temperature and humidity control prevents damage to shoe materials, ensuring their quality and longevity. Smart technology application: The use of NodeMCU ESP8266 microcontroller with internet connectivity enables remote monitoring and control of the shoe drying system, enhancing convenience and accessibility. Keywords: Shoe drying, Controlled system, Temperature and humidity control, Material preservation, Smart technology.

Co-Authors Agus Hayatal Falah Alamur Rosidil Wafa Amar Rasuli Arief Wisaksono Donny Wiraputra Dwi Hadidjaja Dwiki Maulana Rizaldi Guyub Rahman Auwali Indah Sulistiyowati Izza Anshory Jamaaluddin, Jamaaluddin Moch. Dani Septiyan Moh. Muzakki Firmansyah Muhammad Alamsyah Muhammad Drajad Kuncoro Aji Muhammad Syaiful Azis Rakhmad Fajar Ashari Shazana Dhiya Ayuni Syahrorini, Syamsudduha

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