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-, Mujiman
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Earth & Planetary Sciences Engineering

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APLIKASI IC AT89S51 SEBAGAI PENGONTROL KECEPATAN MOTOR DC -, Mujiman
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 1 Agustus 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v1i1.381

Abstract

Controlling is tool up to can work as according to what expected by consumer. At controlling of speed of motor dc, matter which is most commonly done voltage regulation. Controlling design speed motor dc uses the IC AT89S51 as especial component at network. Govern the input by knob depress, processed at network of IC AT89S51, and output through of IC ULN200x (as driver), with the motor of dc stepper as controlled burden. LED use as indication of speed choice. Result of perception prove that with the arrangement of speed of motor rotation use the network microcontroller compared to a calculation theory of there are smallest error at low rotation.
PENGUKURAN NILAI VISKOSITAS OLI MESRAN SAE 10–SAE50 UNTUK PENDINGIN TRANSFORMATOR DISTRIBUSI DENGAN PENAMPIL LCD -, Mujiman
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 1 Agustus 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i1.478

Abstract

Lubrications 0il is the main support of the working of a machine. Not only that, even this oil also determine the performance and engine durability. The better quality oil is used, the better the performance and engine durability. Function not only as a lubricating oil, but also as a cooling and cleaning machinery. As a lubricant, lubricating oil (lubricating) all moving parts inside the machine to prevent direct contact among components which made of metal. In this case, the element, thickness (viscosity) isveryimportant.As coolant, oil must also be able to reduce the heat generated by friction antarlogam on a machine that moves, such as valve (valve) or bearing (ball bearing).
IDENTIFIKASI DAGING SEGAR MENGGUNAKAN SENSOR WARNA RGB TCS3200-DB Pambudi, Prastyono Eko; Sutanta, Edhy; -, Mujiman
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 2 Februari 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v6i2.568

Abstract

The high demand and limited availability of meat meat on the market, making the price of meat to be expensive, and more and more traders are mixing meat rotten meat into fresh meat. To avoid the risk, the public as consumers must beware and know the characteristics of rotten meat and the difference with the fresh meat. This research developed a tool detection fresh meat using RGB color sensor TCS3200-DB. Instrument works by measuring the composition of the RGB color in meat is identified and compared with the composition of the reference RGB color of fresh meat. The study begins by taking the composition of the RGB color of fresh meat samples as reference. RGB color composition is then recorded in the main program listing in the microcontroller. The instrument works by comparing the RGB color composition in meat detected by the reference RGB color composition. The microcontroller will determine the power of RGB color values ​​identified meat and then display it via an LCD. The results of this study indicate that fresh meat, G and B values ​​are closer to each other, respectively 3-38 and 3-29 to 4-27 and 4-25 G and for B the only difference being the value of R, which is the largest value of R is 58.
IDENTIFIKASI DAGING SEGAR DAN BUSUK MENGGUNAKAN SENSOR WARNA RGB DAN pH METER DIGITAL Pambudi, Prastyono Eko; Sutanta, Edhy; -, Mujiman
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v7i1.605

Abstract

The high demand and limited availability meat in the market cause the pricesto be expensive, and increasingly traders that rotten the meat mixinto the fresh meat. To avoidthe risk, people should know the characteristics ofrotten meat and fresh. This research was development of previous research that develops a to olto identification the fresh meat and rotten with RGB color sensor.This research developed a to olto identification fresh meat and rotten using a digital pH meter senso rbased on value of acidic, basic, or neutral. pH meter works based on pH sensor, theg lass electrode. Digital pH meter works by comparing the potential difference at the sensor electrode with Hions at the meat. By using Op-Amp as a voltage amplifier with higher input impedance, then it can be display a signal voltage(mV) that converted to digital format byt he ADC(Analog to Digital Converter) that it can be displayed and read able on the LCD screen.acidic
Co-Authors Edhy Sutanta (Jurusan Teknik Informatika IST AKPRIND Yogyakarta) Prastyono Eko Pambudi