Indonesian Journal of Electrical Engineering and Computer Science
Free elections are one of democracy's principles. Elections will be used to choose the repres... more Free elections are one of democracy's principles. Elections will be used to choose the representatives of the people. It is underlined on how important it is to organize free, fair, and secret elections. Traditionally, voting used to be conducted by stamping on paper, then placing it in a ballot box with the chosen candidate. Each vote in every ballot box must be counted separately, and the votes for each contender must then be added up to determine which candidate had the most votes. Everything was done manually, it will take longer to announce the winner. Numerous errors are being made, but they will not change the outcome. In this study, a significant system that stops electoral malpractices and expedites the voting process will propose. The controller utilized in this project is the Arduino Uno. The user is authenticated using a fingerprint. Everybody's fingerprints differ from one another. The device is programmed using the Arduino IDE, and the ballot card is displayed,...
International Journal of Emerging Technology and Advanced Engineering
For many industries, the ability to distinguish between different solution concentrations is cruc... more For many industries, the ability to distinguish between different solution concentrations is crucial. Modern sensors necessitate a labour-intensive and difficult approach. These problems are addressed by tapered fibre optic sensors. This fibre can be used as citric acid sensors because to its effectiveness, high sensitivity, stability, compact size, low cost, and tolerance to electromagnetic interference. The use of a tapered single-mode fibre sensor to monitor citric acid levels in deionized water is presented in this research. With increasing citric acid content, the wavelength shift of light transmitted from the fibre sensor is tracked and studied. Using a heat-pulling technique, the tapered fiber's waist diameter is reduced to 6 m. As the solution concentration increased from 400 ppm to 700 ppm, the wavelength shifted to the right, from 1524.86 nm to 1530 nm, with a sensitivity of 0.0169 nm/ppm and a linearity of 93%. This sensor has the benefits of being simple to use, inex...
Optoelectronics and Advanced Materials-rapid Communications, 2015
A simple Q-switched Erbium-doped fiber laser (EDFL) operating at 1556 nm is demonstrated based on... more A simple Q-switched Erbium-doped fiber laser (EDFL) operating at 1556 nm is demonstrated based on a solid state saturable absorber fiber. The laser employs a newly developed Erbium-doped fiber with a high Erbium concentration as a gain medium and a 1 m long commercial Thulium-doped fiber as a Q-switcher. The EDFL generates Q-switching pulse train within 980 nm pump power tuning range from 77.2 to 97.5 mW. The repetition rate of the Q-switched pulses monotonically grows from 7.7 to 15.4 kHz while the pulse duration reduces from 21.4 to 14.1 µs as the pump power increases from 77.2 to 97.5 mW. The maximum pulse energy of 11.7 nJ is obtained at pump power of 97.5 mW.
We report a nanosecond pulse generation in an erbium-doped fiber laser using graphene film as a p... more We report a nanosecond pulse generation in an erbium-doped fiber laser using graphene film as a passive saturable absorber (SA). The SA was fabricated from the graphene flakes via the electrochemical exfoliation process. The graphene flakes were mix with the polyethylene solution to form film composite SA. 1mm x 1mm of the graphene film SA then integrated in a ring laser cavity at the end of the fiber ferrule. At the threshold pump power of 154 mW, the erbium-doped fiber laser (EDFL) generated nanosecond pulses laser with the repetition rate of 969 kHz at 1564 nm wavelength. The maximum output power, pulse energy and signal-to-noise (SNR) ratio is about 1.739 mW, 1.79 nJ and 57.3 dB, respectively.
Indonesian Journal of Electrical Engineering and Computer Science, 2022
In today's world, in almost all industries, much of the work is performed by robots or robotic ar... more In today's world, in almost all industries, much of the work is performed by robots or robotic arms with varying degrees of freedom (DOF) as necessary. The aim of this study is to adjust the perception of remote controls for manually controlled robotic-arm operation. This paper offers a way of thinking and a way to eradicate the keys, joysticks and replace them with some of the more intuitive strategy that is to operate the full robotic arm by hand movements operators. The robotic arm is constructed in such a way that it consists of two movable fingers and other movement, which is, a spreading elbow and the up down movement. The robotic arm is designed to mimic the motions of human hands using a hand glove. The hand glove consists of 3 flex sensors for controlling the motions of the finger, the elbow, and other movements. Servo motors are the actuators used by the robotic arm. The proposed electronics device recognizes a basic hand gesture that will be made in real lifetime and will relay valued signals wirelessly through the RF module.
Indonesian Journal of Electrical Engineering and Computer Science
Free elections are one of democracy's principles. Elections will be used to choose the repres... more Free elections are one of democracy's principles. Elections will be used to choose the representatives of the people. It is underlined on how important it is to organize free, fair, and secret elections. Traditionally, voting used to be conducted by stamping on paper, then placing it in a ballot box with the chosen candidate. Each vote in every ballot box must be counted separately, and the votes for each contender must then be added up to determine which candidate had the most votes. Everything was done manually, it will take longer to announce the winner. Numerous errors are being made, but they will not change the outcome. In this study, a significant system that stops electoral malpractices and expedites the voting process will propose. The controller utilized in this project is the Arduino Uno. The user is authenticated using a fingerprint. Everybody's fingerprints differ from one another. The device is programmed using the Arduino IDE, and the ballot card is displayed,...
International Journal of Emerging Technology and Advanced Engineering
For many industries, the ability to distinguish between different solution concentrations is cruc... more For many industries, the ability to distinguish between different solution concentrations is crucial. Modern sensors necessitate a labour-intensive and difficult approach. These problems are addressed by tapered fibre optic sensors. This fibre can be used as citric acid sensors because to its effectiveness, high sensitivity, stability, compact size, low cost, and tolerance to electromagnetic interference. The use of a tapered single-mode fibre sensor to monitor citric acid levels in deionized water is presented in this research. With increasing citric acid content, the wavelength shift of light transmitted from the fibre sensor is tracked and studied. Using a heat-pulling technique, the tapered fiber's waist diameter is reduced to 6 m. As the solution concentration increased from 400 ppm to 700 ppm, the wavelength shifted to the right, from 1524.86 nm to 1530 nm, with a sensitivity of 0.0169 nm/ppm and a linearity of 93%. This sensor has the benefits of being simple to use, inex...
Optoelectronics and Advanced Materials-rapid Communications, 2015
A simple Q-switched Erbium-doped fiber laser (EDFL) operating at 1556 nm is demonstrated based on... more A simple Q-switched Erbium-doped fiber laser (EDFL) operating at 1556 nm is demonstrated based on a solid state saturable absorber fiber. The laser employs a newly developed Erbium-doped fiber with a high Erbium concentration as a gain medium and a 1 m long commercial Thulium-doped fiber as a Q-switcher. The EDFL generates Q-switching pulse train within 980 nm pump power tuning range from 77.2 to 97.5 mW. The repetition rate of the Q-switched pulses monotonically grows from 7.7 to 15.4 kHz while the pulse duration reduces from 21.4 to 14.1 µs as the pump power increases from 77.2 to 97.5 mW. The maximum pulse energy of 11.7 nJ is obtained at pump power of 97.5 mW.
We report a nanosecond pulse generation in an erbium-doped fiber laser using graphene film as a p... more We report a nanosecond pulse generation in an erbium-doped fiber laser using graphene film as a passive saturable absorber (SA). The SA was fabricated from the graphene flakes via the electrochemical exfoliation process. The graphene flakes were mix with the polyethylene solution to form film composite SA. 1mm x 1mm of the graphene film SA then integrated in a ring laser cavity at the end of the fiber ferrule. At the threshold pump power of 154 mW, the erbium-doped fiber laser (EDFL) generated nanosecond pulses laser with the repetition rate of 969 kHz at 1564 nm wavelength. The maximum output power, pulse energy and signal-to-noise (SNR) ratio is about 1.739 mW, 1.79 nJ and 57.3 dB, respectively.
Indonesian Journal of Electrical Engineering and Computer Science, 2022
In today's world, in almost all industries, much of the work is performed by robots or robotic ar... more In today's world, in almost all industries, much of the work is performed by robots or robotic arms with varying degrees of freedom (DOF) as necessary. The aim of this study is to adjust the perception of remote controls for manually controlled robotic-arm operation. This paper offers a way of thinking and a way to eradicate the keys, joysticks and replace them with some of the more intuitive strategy that is to operate the full robotic arm by hand movements operators. The robotic arm is constructed in such a way that it consists of two movable fingers and other movement, which is, a spreading elbow and the up down movement. The robotic arm is designed to mimic the motions of human hands using a hand glove. The hand glove consists of 3 flex sensors for controlling the motions of the finger, the elbow, and other movements. Servo motors are the actuators used by the robotic arm. The proposed electronics device recognizes a basic hand gesture that will be made in real lifetime and will relay valued signals wirelessly through the RF module.
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Papers by Arni Munira Markom