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All Journal DINAMIKA DOTCOM TEKNOLOGI INFORMASI JAIS (Journal of Applied Intelligent System) JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) SENTIA 2016 IJISTECH (International Journal Of Information System & Technology) Industri Inovatif : Jurnal Teknik Industri Jurnal Mnemonic Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Bumigora Information Technology (BITe) IJISTECH ALINIER: Journal of Artificial Intelligence & Applications
M. Ibrahim Ashari
Natinal Institute Of Technology Malang
Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Social Sciences

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ANALISA AUDIO STEREO DECODER UNTUK RADIO PENERIMA FM BERBASIS IC AN7410N Ashari, M. Ibrahim; Faisol, Ahmad
JURNAL TEKNOLOGI INFORMASI: Teori, Konsep, dan Implementasi JURNAL TEKNOLOGI INFORMASI: Teori, Konsep dan Implementasi VOL 8 NO 2 Tahun 2017
Publisher : JURNAL TEKNOLOGI INFORMASI: Teori, Konsep, dan Implementasi

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Abstract

A stereo decoder is enabled to separate information and modulated signal by recovering the previous information signal come as one with the carrier signal using a varying frequency according to the amplitude change value that becomes the same information signal as the original signal or as stereo audio. Inside a stereo audio, there is a component which each functions to get the required signal results in the stereo decoder. The designed stereo decoder uses a single IC; IC AN7410N as a demodulator that is designed to demodulate the signal from the stereo encoder to the L and R audio signals. The result of the test shows that stereo decoder can detect the 19 kHz pilot tone frequency and stereo decoder can also receive FM radio broadcast from the sender and output audio results in the form of stereo L and R, even though the sideband frequency output measurement from each channel L and R, shows the frequency difference (Hz) of expected output frequency.Keywords: audio, stereo, decoder, AN7410N
ANALISA PEMBAGI FREKUENSI UNTUK PHASE LOCKED LOOP BERBASIS IC TC9122 Ashari, M. Ibrahim; Setiawan, Rachmadi
DINAMIKA DOTCOM DINAMIKA DOTCOM VOL 9 NO 2 TAHUN 2018
Publisher : DINAMIKA DOTCOM

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Abstract

In FM radio receivers many frequency instabilities are found in the form of interference from other transmitter radio frequencies. This requires a frequency locking system that can lock the frequency of the relationship between the reference frequency and the frequency wave generated by VCO. The locking system is the Phase Locked Loop system. The Phase Locked loop system requires a divider frequency circuit that uses IC TC9122, input the IC frequency divider will experience a division process that is controlled by a DIP Switch that has been calculated based on the desired frequency to be locked. With this background, it is necessary to create Frequency Dividers for Phase Locked Loops Based on IC TC9122 ", because they see how important PLL is in the radio reception system as a frequency stabilizer. The results of this tool get stability, if the DIP Switch value is calculated based on multiplication of 8 stable prescaler frequencies. To obtain the output frequency stability, the calculation refers to the output of the prescaler 8 divider.
SIMULATOR ALAT PEMOTONG KACA OTOMATIS BERBASIS MIKROKONTROLLER Ashari, M. Ibrahim; Faisol, Ahmad
Jurnal Industri Inovatif Vol 6 No 2 (2016): Jurnal Industri INOVATIF
Publisher : PRODI TEKNIK INDUSTRI S1 ITN MALANG

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Abstract

Kemudahan  dalam  berbagai  bidang  pada  saat  ini  sangat  dibutuhkan  oleh  banyak  kalangan  dalam kehidupan sehari-hari. Salah satu dampak yang sangat diharapkan dengan adanya kemajuan ilmu pengetahuan dan teknologi adalah dapat membantu, mempermudah, dan mempercepat proses pekerjaan manusia. Dalam pemotongan kaca biasanya masih dilakukan dengan cara manual. Hal ini sangat menyita waktu. Atau biasanya jika orang tersebut sudah lelah maka hasilnya tidak dapat diproduksi dengan baik. Pada Penelitian ini dibuat sebuah desain alat pemotong kaca otomatis yang berfungsi untuk memotong kaca dan alat ini mempunyai error rata-rata pemotongan kaca sebesar 0,78%.
ANALISA RT434A SEBAGAI PEMANCAR UNTUK REMOTE MONITORING LEVEL DAYA SPEAKER BERBASIS MIKROKONTROLLER Ashari, M. Ibrahim; Setiawan, Rachmadi
DINAMIKA DOTCOM DINAMIKA DOTCOM VOL 10 NO 2 TAHUN 2019
Publisher : DINAMIKA DOTCOM

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Abstract

Radio Network already exist and it was used long time ago. Its use that the radio networks can communicate through frequency in the air, definitely it simplifies us to transmit the information to others. Along with the development of technology nowadays, the radio network has been applied into several media, one of the impact of an advanced technology is the existing of transmitter for remote of a level monitoring for speaker power based microcontroller. This study used Microcontroller ATmega 8535 as the voltage level processor in which produced by the speaker to be transformed into data and utilize the RF communication media with frequency drop of 433 MHz which used to transmit data to the speaker, so it can be displayed through the computer. The result of the establishment of this device, namely pin ADC on the MicroController has read the data analog from the speaker and pin TXD on MicroController has transmit the data well. Keywords : ADC, Microcontroller, RT434A
Penerapan Sistem Informasi Tagihan (SiTagih) untuk Meningkatkan Kinerja Pencatatan Tagihan dan Keuangan Faisol, Ahmad; Ashari, Mochammad Ibrahim; Orisa, Mira
Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Vol 5, No 1 (2020): March 2020
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/abdimas.v5i1.3564

Abstract

PT Semesta Mitra Sejahtera is a company engaged in the field of public goods transportation services. The existing system is still manual, especially for recording bills, determining the allocation of goods in trucks, and making Bill Notes. To increase efficiency and effectiveness, a new computerized system is needed to accelerate the administration and billing processes that are accurate to the users of transportation services according to the needs of the company owner. The database used is Microsoft Access, while the application is created using the Visual Basic .NET programming language. The results achieved in the form of computer applications that are easy to operate because of its user-friendly appearance. After the application is complete, the service team conducts training for users at PT Semesta Mitra Sejahtera. This training is expected to help partners in mastering the use of applications, especially for recording bills. How to cite:Faisol, A., Ashari, M. I., Orisa, M. (2020). Penerapan Sistem Informasi Tagihan (SiTagih) untuk Meningkatkan Kinerja Pencatatan Tagihan dan Keuangan. Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang, 5(1), 38-46.DOI: https://doi.org/10.26905/abdimas.v5i1.3564  
Implementation of Fuzzy Logic Controller for Wall Following and Obstacle Avoiding Robot Aryuanto Soetedjo; M. Ibrahim Ashari; Cosnas Eric Septian
Journal of Applied Intelligent System Vol 4, No 1 (2019): Journal of Applied Intelligent System
Publisher : Universitas Dian Nuswantoro and IndoCEISS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33633/jais.v4i1.2168

Abstract

This paper presents the development of wall following and obstacle avoiding robot using a Fuzzy Logic Controller. The ultrasonic sensors are employed to measure the distances between robot and the wall, and between the robot and the obstacle. A low cost Raspberry Pi camera is employed to measure the left/right distance between the robot and the obstacle. The Fuzzy Logic Controller is employed to steer the mobile robot to follow the wall and avoid the obstacle according to the multi sensor inputs. The outputs of Fuzzy Logic Controller are the speeds of left motor and right motor. The experimental results show that the developed mobile robot could be controlled properly to follow the different wall positions and avoid the different obstacle positions with the high successful rate of 83.33%.
Otomatisasi dan Monitoring Parameter Lingkungan Pada Media Tumbuh Budidaya Jamur Tiram Berbasis Internet of Things Khulud Anshori; Aryuanto Soetedjo; M.Ibrahim Ashari
Jurnal Bumigora Information Technology (BITe) Vol 2 No 2 (2020)
Publisher : Prodi Ilmu Komputer Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/bite.v2i2.899

Abstract

Jamur Tiram (Pleurotus Ostreatus) adalah tanaman sejenis fungi yang sering dibudidayakan pada lingkup pertanian Indonesia, dikarenakan tanaman ini memiliki banyak kegunaan dari segi kuliner dan kesehatan. Jamur tersebut dibesarkan dengan cara memanipulasi parameter lingkungan, agar sedemikian rupa sehingga dapat tumbuh didalam suatu wadah/tempat yang telah disediakan. Perlu diketahui bahwa jamur tersebut pertumbuhannya dapat dipengaruhi oleh pH, suhu dan kelembapan yang dapat mempengaruhi tumbuhnya jamur, agar pertumbuhan budidaya jamur tersebut dapat terpantau dan terkontrol, maka diperlukan sebuah alat yang dapat mengontrol parameterr lingkungan tersebut agar sesuai dengan yang seharusnya. Dari hasil pengujian alat keseluruhan, dapat dikatakan bahwa alat tersebut dapat merespon perubahan parameter lingkungan berdasarkan nilai sebenarnya dari media dan lingkungan jamur tersebut, serta mengetahui estimasi panen yang dianjurkan.
SIMULATOR ALAT PEMOTONG KACA OTOMATIS BERBASIS MIKROKONTROLLER M. Ibrahim Ashari; Ahmad Faisol
SENTIA 2016 Vol 8, No 2 (2016)
Publisher : SENTIA 2016

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Abstract

Kemudahan dalam berbagai bidang pada saat ini sangat dibutuhkan oleh banyak kalangan dalam kehidupan sehari- hari. Salah satu dampak yang sangat diharapkan dengan adanya kemajuan ilmu pengetahuan dan teknologi adalah dapat membantu, mempermudah, dan mempercepat proses pekerjaan manusia. Dalam pemotongan kaca biasanya masih dilakukan dengan cara manual. Hal ini sangat menyita waktu. Atau biasanya jika orang tersebut sudah lelah maka hasilnya tidak dapat diproduksi dengan baik. Pada Penelitian ini dibuat sebuah desain alat pemotong kaca otomatis yang berfungsi untuk memotong kaca dan alat ini mempunyai error rata-rata pemotongan kaca sebesar 0,78%.
DEMODULATOR THAT CONVERTS ENCODER STEREO SIGNAL INTO L AND R AUDIO SIGNAL Ibrahim Ashari; Faisol Ahmad
JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 3, No 1 (2020): February 2020
Publisher : Merdeka Malang University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jeemecs.v3i1.3976

Abstract

As technology develops in today’s age, there are many radio equipment easily found in the market. Certainly, there is a stereo decoder module inside a FM radio receiver which operates to return radio signal that previously was modulated and broken apart into stereo audio signal (L+R) and (L-R). There are many stereo decoders already presented inside FM radio receivers. Based on this premise, there is a problem that can be studied, which is how to design a decoder stereo in a stereo FM radio receiver that functions as the demodulation in stereo FM radio and operates to release L+R audio signal to a receiver radio. Therefore, it needs a signal demodulatorof encoder stereo that converts L and R audio signal. Based on the testing result, it showed that sideband frequency from the result of DSB-SC demodulator process, which was produced through R and L channels, still had frequency value differences with average percentage of 1.416% out of the expected frequency value. This was due to the frequency oscillator from the generator function.  
The Analysis Of Voltage Optimization System With Pararel Series Arranger In Solar Cell Ibrahim Ashari; Ahmad Faisol
JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 3, No 2 (2020): August 2020
Publisher : Merdeka Malang University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jeemecs.v3i2.4731

Abstract

Parallel series is very suitable to be used to overcome the ups and down of voltage caused by the supply of sunlight to the solar cell. The series circuit can be used to overcome the lack of voltage on the solar cell, while the parallel circuit is used to flow larger currents with a constant voltage when the supply of sunlight on the solar cell is at its maximum. Solar cell as converters of sunlight into electrical energy in the form of DC voltages, which are connected in parallel series by utilizing relay contacts that are controlled using atmega 16 microcontroller, where the voltage generated by the solar cell in the sensor uses a voltage sensor. Switching regulator as lowering the voltage over solar cell for battery charging. The test results using a series of series and minimum lighting produces a voltage 14,8 Volt, parallel circuits and maximum lighting produces a voltage of 20 volts, and a combination of parallel-series under moderate lighting conditions produces a voltage of 23.3 VoltDOI : https://doi.org/10.26905/jeemecs.v3i2.4731
Co-Authors AHMAD FAISOL Anis Artiyani Anis Artiyani Aryuanto Soetedjo Cosnas Eric Septian Khulud Anshori Michael Ardita Mira Orisa Ni Putu Agustini Rachmadi Setiawan Sidik Noertjahjono Sutanto Hidayat