Šiame darbe išnagrinėtos virtualios mikrokontrolerio programavimo laboratorijos naudojamos kitose mokymo įstaigose, jų realizavimo būdai ir naudojamos technologijos. Palygintos technologijos ir jų galimybės. Išanalizuotos kontrolerio nuotolinio valdymo per internetinės svetainės sąsają, tiesioginio vaizdo perdavimo, vartotojų autentifikavimo, resursų planavimo, duomenų saugojimo realizacijos galimybės. Atsižvelgiant į tyrimų rezultatus, sukurta VL, ne brangesnė už šiuo metu naudojamą laboratorijos priemonių komplektą. Virtuali laboratorija leidžia pilnai realizuoti VDU dėstomų dalykų laboratorinius darbus, pasiekiama nepriklausomai nuo vietos ar laiko. Išspręsta resursų planavimo problema – panaudojant VL vartotojų registraciją bei laiko rezervacijas. Realizuota tiesioginė vaizdo transliacija, kuri palaikoma beveik visų interneto naršyklių. Virtualioje laboratorijoje yra realizuota dviejų analoginių įėjimų simuliacija ir indikacija, 4-ių skaitmeninių įėjimų/išėjimų indikacija, bei 3-jų skaitmeninių įėjimų/išėjimų simuliacija. Turi prijungtą LCD displėjų. VL talpinimui, panaudojus mini kompiuterį Raspberry Pi, ji vartoja tik 5 W energijos. Dėl pasirinktos standartinės kameros bei naudojamos PĮ, TĮ komponentai gali būti pakeisti, nesukeliant didesnių problemų. Raspberry Pi duomenys saugomi SD kortelėje, todėl pasidarius veikiančios sistemos kopiją, galima lengvai ir greitai sukurti kelias laboratorijas. / This paper deals with the investigation of the virtual microcontroller programming laboratories used in other educational institutions, as well as their realization techniques, and technologies used. Technologies and their offered potentials are compared. The possibilities of microcontroller remote control via website interface, live video streaming, user authentication, resource planning, and data storage are examined. Taking into account investigation results, the virtual laboratory has been developed, no more expensive than those currently used in laboratory work equipment kit per student. Virtual Lab allows to fully realize laboratory works of subjects taught at VDU, as it is fully available irrespective of space or time constraints. The issue of resource planning problem was solved using the VL user registration and time booking. Live video broadcasting has been implemented, which is supported by nearly all Internet browsers. Virtual laboratory has 4 digital PIN indicators and 2 analog inputs indicators. VL can simulate 2 analog inputs and 3 digital I/O. It has an LCD connected. VL is hosted using Raspberry Pi mini-computer – it uses only 5 watts of energy. The chosen standard camera and software used enables worn-out parts to be easily replaced while evading any problems. Raspberry Pi data stored on the SD card, thus by making a copy of the working VL, one can create multiple laboratories.

Contents of the thesis is to design and create an expansion board for the BeagleBoard computer one plate . The first and very important part was to find out all the possibilities for an extension of the computer itself . Choose the right expansion port . To study the possibility distribution of individual pins . Followed by the appropriate extension election districts that demonstrate the function of each enlargement . Test was designed PCB that contains circuits that change the voltage level of the BeagleBoard to protect a mini computer to the testing of each gusset periphery prevent damage to itself or part of the BeagleBoard . The peripherals themselves bind different parts of theoretical introduction. More specifically the extension of the LCD display is selected segment and includes two lines of 16 characters . When the possibility to add additional components were necessary to deal with the shortcomings of the output pins , this problem was solved by using an expander . He extends itself BeagleBoard by another 16 pins . On these pins are connected together on the LCD matrix keyboard . The creation of the board are two circuit temperature sensors , but have a different type of communication using I2C and one second using 1 -Wire bus . The board also contains various other bus outputs , for example, UART bus. It also contains an output pin which can be controlled PWM modulation . The remaining pins are versatile GPIO pins which can be programmed to define a function using the Linux operating system . The result is a final board of the package control programs which make it possible to verify the individual peripherals.

International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Upgrading or replacing production systems is always a very resource-consuming task, in particular if the systems being replaced are quite specialized, such as those serving any Flight Test Ground Station. In the recent past a large number of Ground Station systems were based in Digital’s VAX/VMS architecture. The computer industry then expanded very fast and by 1990 realtime PCM data processing systems totally dependent on hardware and software designed for IBM-PC compatible micro-computers were becoming available. A complete system replacement in a typical Ground Station can take from one to several years to become a reality. It depends on how complex the original system is, how complex the resulting system needs to be, how much resources are available to support the operation, how soon the organization needs it, etc. This paper intends to review the main concerns encountered during the replacement of a typical VAX/VMS-based by an Intel-Windows NT-based Ground Station. It covers the transition from original requirements to totally new requirements, from mini-computers to micro-computers, from DMA to high-speed LAN data transfers, while conserving some key architectural features. This 8-month development effort will expand EMBRAER’s capability in acquiring, processing and archiving PCM data in the next few years at a lower cost, while preserving compatibility with old legacy flight test data.