Widyanto Widyanto · 2014
Dalam ruangan yang tertutup (closed-loop system), suhu adalah salah satu faktor yang berpengaruh terhadap lingkungannya. Pengontrolan terhadap suhu ruangan yang bekerja secara otomatis dapat menjaga suhu pada kondisi yang optimum – tidak terlalu panas atau tidak terlalu dingin – dan dapat menghemat penggunaan energi. Sensor yang dipasang sebagai umpan balik (feedback) dalam sistem akan mengindera nilai suhu ruangan secara terus-menerus (real time). Hasil tersebut sebelum dikirimkan kepada microcontroller untuk diolah telah dikonversikan terlebih dahulu oleh ADC. Suhu hasil penginderaan akan dibandingkan dengan suhu ambang – suhu optimum ruangan – yang dapat diatur nilainya – batas bawah maupun batas atasnya – melalui masukan keypad. Perbedaan tersebut yang menjadi indikator bekerja atau tidaknya kipas sebagai pendingin ruangan.
Kata Kunci : Suhu, suhu ambang, sistem kontrol, microcontroller.
Cited by 1
Ruifeng Wang, Zhe Wang, Liying Wang · 2015
Along with the application of computer and microelectronic technology in industrial production, the use of computer technology and microelectronic technology to control the stepping motor has gradually become a new technology. Stepper motor control system is designed based on AT89S51, including the hardware circuit design and software design. Keyboard input signal is used to control the stepper motor rotation direction and speed. The rotation direction is displayed by LED. The design has high reliability and strong stability, which can be applied to the field of disk drive, robots and automation instrument.
Cited by 5
Anindya Bhattacharya · 2014
implemented as in this paper is capable of testing 14 pin Integrated Circuits (ICs) of 7400 series. First, the system welcomes the user and asks the user to enter IC number. It takes the last two digits of the IC no. of the IC to be tested as input from a 4x3 matrix keyboard which is implemented by 12 push buttons. It then checks the IC(in the 14 pin socket) as per the IC no. and gives output at an 16x2 Liquid Crystal Display (LCD) by displaying “GOOD ” or “BAD ” next to the corresponding gate no. In case of wrong IC no. input or more than two digits is tried to be entered, an error signal is generated and the LCD displays “ERROR”. „Reset ‟ key is used to reset the system and to go back to the welcome screen. „Enter ‟ key is used to give signal to the system to the start the checking process. Power ON LED is provided to indicate when the system is powered. The heart of the system is an ATMEL 89s51 microcontroller which is programmed for detecting keystroke, deciding which IC to check for, give inputs to test IC, check the outputs of the test IC and display in the LCD as mentioned before. Programming is done in assembly language for optimum utilization of memory space available. As the more effectively available memory is utilized the more number of ICs can be tested by a single controller system. In the assembly language program (ALP), each gate in the IC is checked for all the input combinations possible e.g. 00, 01, 10 and 11 input for two input gate ICs. The logics for checking different ICs are in sequence of their IC no. one after another. A 0.25 second key debounce delay is provided in ALP. The device was designed at Centre for Electronics Test
Cited by 0
Agus Budiharto · 2005
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Widiotomo, Donny, Hermanto, Lingga · Gunadarma University Repository (Gunadarma University)
Dalam ruangan yang tertutup (close-loop system), suhu adalah salah satu faktor yang berpengaruh terhadap lingkungannya.
Cited by 0Open access
PUSPITA, Yuli Mulia · Andalas University Repository (Andalas University) · 2008
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Onggojoyo, Stephen Irwanto · Universitas Sanata Dharma Repository (Universitas Sanata Dharma) · 2005
Cited by 0Open access
Zalfi Yandri · Andalas University eThesis (Andalas University) · 2013
Pengontrolan katup aliran fluida secara otomatis merupakan hal yang sering dijumpai dalam dunia industri maupun dalam kehidupan sehari-hari. Dengan adanya pengontrolan ini maka aliran fluida dapat dikendalikan secara otomatis tergantung kondisi/ keadaan di sekitarnya. Pada Tugas Akhir ini dirancang dan dibuat suatu sistem kontrol fluida yang dapat mendeteksi keberadaan benda. Sistem kontrol aliran fluida yang dibuat terdiri dari tiga bagian utama yaitu sebuah LED (Light Emitting Diode) sebagai sumber sinar, LDR (Light Dependent Resistor) yang berfungsi sebagai sensor, sebuah mikrokontroller AT 89551 yang berfungsi sebagai pengatur/otak dari sistem dan sebuah katup solenoid (solenoid valve) yang berfungsi sebagai aktuator dalam sistem ini. Setelah pembuatan alat selesai, dilakukan pengujian terhadap unjuk kerja dari sistem secara keseluruhan. Dari hasil pengujian sistem kontrol aliran fluida diperoleh hubungan antara jarak gangguan terhadap waktu respon berbanding positif, artinya semakin besar jarak gangguan maka semakin besar juga waktu respon yang dibutuhkan dan semakin kecil jarak gangguan maka semakin kecil juga waktu respon yang dibutuhkan. Korelasi antara dua variabel ini juga cukup bagus (R²= 0,9255). Hasil regresi linear antara kedua variabel ini adalah y= 0,0177x + 0,9067, dimana y adalah waktu respon (detik) dan x adalah jarak gangguan (cm).
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Iswanto Iswanto, Prisma Megantoro, Nia Maharani Raharja · Proceeding of the Electrical Engineering Computer Science and Informatics · 2020
This article discusses the manufacture of formaldehyde content test kit device. The device made can find out whether formalin or samples that are dropped are reagents, its characteristics can be processed electronically to determine the levels of formalin detected in the reagent/test kit. The design is made using AT89S51 microcontroller. Detection of formaldehyde levels using a color measurement method for reagent fluids consisting of R, G, and B values. Measurement of these color parameters using the TCS230 sensor. With this device, it is expected to facilitate health workers, especially health analysts, to automatically test the level of formaldehyde in food with a display on the LCD. The result of device test, this device is feasible to use by the percent error value of less than 10%.
Cited by 2Open access
Setiawan, Moh Dwi · UPT. Syiah Kuala University Library (Syiah Kuala University) · 2009
Have been done desain MIDlet tutorials and dictionaries AT89S51 microcontroller instructions for mobile phones using J2ME Java programming. \nMIDlets can be used as a guide to learn microcontroller AT89S51, and also a reminder note AT89S51 microcontroller instruction dictionary. \nThe system consists of hardware and software. The hardware consists of mobile phone technology that uses J2ME (Java 2 Micro Edition), as well as infrared connection, Bluetooth or a data cable. The software consists of J2ME \nWireless Toolkit, J2SE SDK, and notepad for programming purposes. MIDlet works by displaying materials microcontroller AT89S51 and AT89S51 microcontroller instruction dictionary mobile phone screen. In the \ndictionary AT89S51 microcontroller instructions, data entry can be done individually by the user. To facilitate users in searching the data dictionary, \nsearch engine search on duty in the data dictionary AT89S51 microcontroller instruction with initial character search method.
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Dwi Kuncoro · 2021
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Wijanarko, Gregorius Guntur · Universitas Sanata Dharma Repository (Universitas Sanata Dharma) · 2007
Cited by 0Open access
Indrianto Indrianto · 2006
Designing tools to guard the safe distance of the automobile-based Microcontroller AT89S51 intended to reduce the number of accidents particularly for four-wheeled vehicle that almost happen every day either street or highway within the highway. This happens because not all vehicles have a range of security system that serves as a critical distance when the distance a vehicle warner they are too close to another vehicle. Equipment will be placed on front bumper which gives a warning if the distance is too close. With hopes of vehicle accidents can be avoided.
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PUTRA, Tri Doni · Andalas University Repository (Andalas University) · 2009
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Muhamad Yusuf · 2009
Muhamad Yusuf,2009. Car parking sensor prototype based on AT89S51
microcontroller. D3 Programs Computer Science Faculty of Mathematics and
NaturalSciences University of Eleven March.
Car drivers often experience difficulties to park their cars in the narrow
location, because the parking area is narrower. Not a few drivers hit the power
pole or deface the walls when parking the car.
The goal of this final task is to design a car parking sensor prototype based
on AT89S51 microcontroller. This tools system uses a AT89S51 microcontroller
as a main control. Used as input SRF04 ultrasonic sensor module which, it
consists TX (transmitter) and RX (receiver). Output use an LCD (Liquid Crystal
Display) to display the distance and uses speakers for sound indicators.
Results obtained from that car parking sensor prototype based on
AT89S51 microcontroller is a tool can be used to measure the distance of parking.
AT89S51 microcontroller functions is the main data processing equipment on the
resulting distance from ultrasonic sensor. Use module SRF04 ultrasonic sensor,
the car parking sensor prototype based on AT89S51 microcontroller can produce
a more accurate data. Parking distance is presented via LCD display with a
measuring meter. Speaker can be used as sound indicators on the car parking
sensor.
Keywords: parking sensor, SRF04 ultrasonic sensor, AT89S51 microcontroller
Cited by 3
I Wayan Widhiada · SHILAP Revista de lepidopterología · 2012
The research discussed about the work system of The Line Tracer Robot movement analysis, with using the AI program and assembler programming language. The tools that used are microcontroller type AT89S51, Meitan ASM 2005 Standard Edition version 1.00 as development tools and Meitan 2005 as the hardware tools modul. From the result of research, it can be known that The Line Tracer Robot with AI program is able to show differences, among the white as a based colour and black as a line colour. The AI program is able to accelerate/coordinate the system of work, between the censor and the parts of driver motor combinations. The robot that did not use AI program can not run well, and the wheel just able to rotate in one direction.
Cited by 0Open access
PUJA Utama · Andalas University Repository (Andalas University) · 2008
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Akhmad Hariyadi, Nur Kholis · 2015
Abstrak Penelitian ini bertujuan untuk mengetahui kelayakan rangkaian trainer mikrokontroler yang menggunakan IC tipe AT89S51 pada mata pelajaran mikroprosesor, serta untuk mengetahui respon siswa terhadap pembelajaran mikroprosesor yang menggunakan trainer mikrokontroler AT89S51 sebagai media pembelajaran. Jenis penelitian ini adalah penelitian pengembangan. Data penelitian diperoleh dari hasil validasi jobsheet, validasi trainer, validasi angket respon siswa, dan hasil rating angket respon siswa. Hasil penelitian antara lain: (1) validasi trainer sebesar 90,36%, dapat disimpulkan bahwa trainer mikrokontroler AT89S51 mempunyai nilai kategori sangat layak; (2) validasi jobsheet sebesar 93,57%, dapat disimpulkan bahwa jobsheet mikrokontroler AT89S51 mempunyai nilai kategori sangat layak; (3) validasi angket respon siswa sebesar 90,62%, dapat disimpulkan bahwa angket respon yang akan digunakan untuk menilai respon siswa terhadap trainer dan jobsheet mikrokontroler AT89S51 tersebut mempunyai nilai kategori sangat layak; Dan (4) hasil rating respon siswa terhadap media trainer dan jobsheet sebesar 80,01% , dapat disimpulkan bahwa siswa setuju dengan hasil pengembangan trainer dan jobsheet mikrokontroler AT89S51 tersebut untuk digunakan dalam pembelajaran pada mata pelajaran teknik mikroprosesor. Kata kunci: Mikrokontroler, Pengembangan Trainer dan jobsheet, respon siswa Abstract This study aims to determine the feasibility of using a microcontroller trainer circuit type IC AT89S51 on the subjects of microprocessors, as well as to determine the students' response to learning that uses a microprocessor AT89S51 microcontroller trainer as a learning media. This type of research is the development of research. Data were obtained from the results of the validation jobsheet, trainer validation, validation of student questionnaire responses, and the results of a questionnaire rating the students' responses. Results of the study include: (1) validation trainer at 90.36%, it can be concluded that the AT89S51 microcontroller trainer has a very decent value category; (2) validation jobsheet amounted to 93.57%, it can be concluded that the jobsheet AT89S51 microcontroller has a very decent value category; (3) validation of student questionnaire responses amounted to 90.62%, it can be concluded that the questionnaire responses that will be used to assess the student's response to the AT89S51 microcontroller trainer and jobsheet has a very decent value category; And (4) the results of rating students' response to media trainer and jobsheet amounted to 80.01%, it can be concluded that students agree with the results of the development of AT89S51 microcontroller trainers and jobsheet for use in teaching on the subjects of microprocessor techniques. Keywords: Microcontroller, Trainer and jobsheet development, student response
Cited by 7
Adi Darmana · 2010
ABSTRAK Pengendara motor kadang merasa kurang nyaman dengan tampilan analog
tachometer, karena pembacaannya yang kurang akurat yang disebabkan oleh
keterbatasan penglihatan mata manusia.
Tujuan dari tugas akhir ini adalah untuk merancang Tachometer Digital
Sepeda Motor berbasis Mikrokontroler AT89S51. Sistem alat ini menggunakan
mikrokontroler AT89S51 sebagai pengendali utamanya. Sebagai input digunakan
pulser pada sepeda motor untuk mendapatkan nilai pulsa. Sebagai output digunakan
7-segment untuk menampilkan nilai RPM (Revolution Per Minute).
Hasil yang didapat dari pembuatan Tachometer Digital Sepeda Motor berbasis
Mikrokontroler AT89S51 adalah alat tersebut dapat digunakan untuk mengukur RPM
(Revolution Per Minute) atau putaran mesin pada sepeda motor. Mikrokontroler
AT89S51 sebagai pengendali utama dalam pemrosesan data RPM (Revolution Per
Minute) yang berasal dari perhitungan pulsa yang dihasilkan pulser. 7-segment
digunakan sebagai penampil besaran RPM (Revolution Per Minute) pada sepeda
motor.
ABSTRACT
Bikers sometimes feel uncomfortable with the look of an analog tachometer,
because the reading of that tachometer less accurate due to the limitations of human
eyesight. The goal of this final task is to design a Tachometer Digital Of Motorcycle
Based On AT89S51.
. Tachometer tool system was using a microcontroller AT89S51 as main
controller. Pulser was used as input on the motorcycle to get the pulse. Output use a
seven-segment can be used to display the value of RPM (Revolution Per Minute).
Manufacture of Digital Tachometer Motorcycles AT89S51 Microcontroller based
tool can be used to measure the RPM (Revolution Per Minute) or rotation of
motorcycle engine. AT89S51 microcontroller as the main data processing equipment
RPM (Revolution Per Minute) was derived from the calculation of the resulting pulse
of pulser. 7-segment was used as a viewer RPM (Revolution Per Minute) on the
motorcycle.
I can be concluded that Tachometer Digital Of Motorcycle Based On
AT89S51 Microcontroller has been created.
Cited by 1
Gatot Triardi Pramaji · 2010
Cited by 0