The purpose of this project was to design and construct an experimental setup enabling pump operation to be controlled and ensuring the smooth regulation of its efficiency. The closed liquid circuit ...is equipped with a throttling valve to slow down the flow. In addition, flow meters were used in the installation to enable the flow to be measured. Ultimately, after choking the flow, the pump could be controlled in such a way that maintained the set flow value. The PID controller fulfilling this function can be configured by changing its settings. In this way, an expiermintal setup can demonstrate the influence of individual elements of the regulator on the efficiency of regulation. This work is a continuation of further research related to the project number: 006/RID/2018/19 financed under the program Ministry of Science and Higher Education.
Formulation of the problem. One of the promising methods of training in STEM education is the method of projects. The projected method in STEM education determines the relevance and research nature ...of the topic of the project, ensuring the interconnection of theoretical knowledge with practice, practical implementation of the results of the project. The project, as a means of implementing STEM education, allows you to integrate knowledge from different subject industries when solving real tasks, the creation of existing layouts, which causes their practical use.
Materials and methods. Methods of analysis and systematization of scientific and pedagogical literature were used; generalization of the results of domestic and foreign experience in the use of a prose method in the STEM education using the ARDUino software and hardware platform. The experimental method of creating an active physiotherapy laser device for treatment of the runny nose is presented. A software modeling is used to simulate a device with the design of the Arduino Uno board.
Results. The example of the implementation of the STEM project "Development of a physiotherapeutic laser device for the treatment of runny nose" demonstrates how it is possible to integrate many different-level, didactic, and research tasks. A generalized description of the main structural elements of the Arduino Uno board is given. A typical algorithm for familiarizing yourself with the operation of the Arduino board is formulated. The main sections of the physics course are indicated, the knowledge of which is fundamental for implementing the project. It is shown how using a bit matrix of laser states allows the creation of cyclic irradiation modes that periodically change each other. An example of a code processing a bit matrix of laser states is provided. The sketch controls the modes of the semiconductor laser, displays the exposure time on the liquid crystal display, and emits a sound signal at the end of the exposure time set by the potentiometer. A fragment of the simulation modeling of a physiotherapy device in the Tinkercad Circuits environment is presented.
Conclusions. The practical experience of using the project method in STEM education has shown that it allows students to investigate a real problem actively, apply the acquired knowledge in practice, and develop cooperation, communication, and critical thinking skills. Implementation of the project contributes to the combination of various activities, such as cognitive, creative, practical, and research, as well as the development of thinking skills, motivation, and responsibility for one's actions. Implementing the project method makes it possible to provide high-quality training for specialists in natural sciences who can effectively apply their knowledge and skills in practical situations and contribute to the further development of STEM fields in Ukraine.
Concrete structures are susceptible to several factors during their life cycles, which can cause various problems. This situation can be avoided in many cases if Structural Health Monitoring (SHM) is ...used. However, such monitoring is often expensive due to the large number of sensors and the use of data acquisition systems (DAQ). In this context, self-sensing cement composites (SSCCs), monitoring themselves without sensors by incorporating conductive fillers in their composition, provide a better piezoresistive effect. In this research, the Arduino platform and analog to digital converters (ADC) modules were tested, and a prototype of a low-cost DAQ was developed for monitoring SSCCs. The devices were analyzed from the compression tests on the mortar specimens, and the results were compared to measurements obtained from the reference equipment (professional DAQ). The results showed a good sensitivity and an adequate correlation between both devices in some cases. It showed that the Arduino platform has the potential to be used in the experimental monitoring of SSCCs, however it needs to be combined with an ADC module.
The paper presents a research of the influence of external factors on the measurement of a basic soil quality parameter. Developed system based on Arduino platform is used for measurement of basic ...soil parameter acidity. Research of the influence of temperature and soil type on the measurement of soil acidity is carried out. The system has been experimentally tested with soil samples from two main types of soil in Bulgaria. The results for the soil parameters obtained with the Arduino based system are compared with a reference measuring instrument. The presented Arduino based system for soil parameters measurements shows good measurement accuracy sufficient for engineering research. Keywords: Soil Acidity; Arduino platform; Reference measurement.
The problem of improving the educational process of students of scientific, technical and natural science areas of training is one of the relevant aspects of modern pedagogical research. During ...training, it is necessary to apply new approaches, educational technologies and techniques in order to prepare graduates who are able to independently solve complex scientific, technical and engineering design tasks in the process of modern production. Programming is a universal tool for modeling objects and processes, as well as a powerful tool in developing the thinking of students of scientific, technical and natural science fields of training. The article discusses the issues of formation of programming skills of students based on the use of the Arduino platform. The professional standards are analyzed, the main contradictions of the existing system of training future bachelors in the field of radio electronics and control systems are revealed. The method of organizing effective programming training based on the use of the Arduino platform is presented. The criteria and indicators of the levels of competence formation are given. The results of an experiment on the implementation of the described methodology of teaching programming on the basis of the I.N. Ulyanov Chuvash State University are shown. Using the chi-square criterion, statistical processing of the results of a pedagogical experiment was performed, which convincingly proves that when using the Arduino platform, most students have reached high and advanced levels of programming skills formation.
Gonzaga, B.A.; Alves, D.C.L.; Albuquerque, M.G.; Espinoza, J.M.A.; Almeida, L.P.M., and Weschenfelder, J., 2020. Development of a low-cost ultrasonic sensor for groundwater monitoring in coastal ...environments: Validation using field and laboratory observations. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 1001–1005. Coconut Creek (Florida), ISSN 0749-0208. This study presents the development and validation of a low-cost ultrasonic sensor (HCSR 04), coupled to an open source Arduino microcontroller platform, for groundwater monitoring in coastal environments. Given the fact that low-lying coastal zones are regions naturally prone to flooding (due to oceanic forcing and pluviosity) and densely occupied, monitoring groundwater variations is crucial for the management of flood-related events. A groundwater monitoring well was built, (made of a PVC pipe with 100 mm in diameter and 2 m long) and installed on the ground of a dune field, located in Cassino beach, southern of Brazil. The system was deployed for 84 consecutive days and programmed to perform water level measurements every 10 min. In laboratory, three units with the same hardware setup of the unit installed in the field (ultrasonic sensor coupled to the Arduino microcontroller) were installed on a 20 liter graduated PVC tube. Varying water levels were tested in the laboratory along the time (changing 1 cm every 2 minutes during 4 hours) in order to reproduce the synthetic signal. Eighty measurements were obtained for each sensor, a total of 240 for each validation process. For the laboratory validation, the results for nonparametric statistical tests (Kruskal and Wallis, and Dunn) presented a correlation of 99%, with Root mean square error (RMSE) 0.4113 and bias 0.0418. For the field tests, 3262 data collected by an ultrasonic sensor during 240 hours showed a means registration of 0.543 m. The minimum and maximum cataloged is 0.40 and 0.70 m, respectively, with 0.1076 m of standard deviation. Groundwater classical measurements, using a measuring tape, showed a mean and standard deviation of 0.544 and 0.1069 m, respectively. These preliminary tests showed that the developed monitoring system performs observations with an accuracy and precision within standard methods, therefore can be applied to monitoring changes in the level of groundwater.
The study of higher cognitive processes often relies on the manipulation of bottom-up stimulus characteristics such as exposure time. While several software exist that can schedule the onset and ...offset time of a visual stimulus, the actual exposure time depends on several factors that are not easy to control, resulting in undesired variability within and across studies. Here we present VISTO, a simple device built on the Arduino platform that allows one to measure the exact onset and offset of a visual stimulus, and to test its synchronization with a trigger signal. The device is used to measure the profile of luminance waveforms in arbitrary analog/digital (AD) units, and the implications of these luminance profiles are discussed based on a model of information accumulation from visual exposure. Moreover, VISTO can be calibrated to match the brightness of each experimental monitor. VISTO allows for control of stimulus timing presentation, both in classical laboratory settings and in more complex settings as technology allows to use new display devices or acquisition equipment. In sum, VISTO allows one to:•measure the profile of luminance curves.•determine the exposure time of a visual stimulus.•measure the synchronization between a trigger signal and a visual stimulus.
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Resumo No presente artigo, apresentamos os procedimentos necessários para a construção de uma maquete experimental automatizada para a comprovação da lei de Malus com o auxílio da plataforma Arduino, ...em consonância com o plano de automatização das práticas laboratoriais dos Laboratórios de Física Geral da Universidade Estadual do Sudoeste da Bahia, UESB. A escolha da plataforma Arduino está relacionada, em primeiro lugar, com o seu baixo custo, a facilidade de programação e a sua capacidade de estudar processos físicos em tempo real na prática educacional, o que tem permitido modernizar os laboratórios, que são automatizados, manipulados remotamente. A utilização de modernos recursos de software e hardware, unidos por uma plataforma de software universal, permite criar ferramentas virtuais e reais multifuncionais com interface cômoda para estudantes e pesquisadores. Os resultados experimentais obtidos foram usados para demonstrar a lei de Malus por dois métodos. De fato, considerando-se os mais recentes progressos da tecnologia dos computadores, tem-se oportunidades reais para introduzir os mais avançados e eficientes recursos de software e hardware, altamente interativos sem o uso de equipamentos caros.
Abstract In this article, we present the necessary procedures for the construction of an automated experimental model to prove the Malus law with the aid of the Arduino platform, in line with the automation plan for laboratory practices at the General Physics Laboratories of the State University of Southwest from Bahia, UESB. The choice of the Arduino platform is primarily related to its low cost, ease of programming and its ability to study physical processes in real time in educational practice, which has allowed the modernization of laboratories, which are automated, manipulated remotely. The use of modern software and hardware resources, united by a universal software platform, allows the creation of virtual and real multifunctional tools with a comfortable interface for students and researchers. The experimental results obtained were used to demonstrate Malus' law by two methods. In fact, considering the latest advances in computer technology, there are real opportunities to introduce the most advanced and efficient software and hardware resources, highly interactive without the use of expensive equipment.
Los estudiantes nacidos en una era digital requieren metodologías ajustadas a la sociedad del siglo xxi, donde la competencia digital se hace indispensable. Al mismo tiempo, se debe construir un ...ambiente de trabajo que estimule el aprendizaje de manera más efectiva a través de las interacciones entre los alumnos y las tecnologías de la información y la comunicación (TIC). En este estudio se recoge el diseño de una batería de prácticas de Física y Química por medio de sensores y equipos de captación automática de datos mediante el uso de la plataforma libre Arduino, que sean fáciles de implementar en diferentes niveles educativos. Se describen en detalle las actividades planteadas, los circuitos montados y el código empleado. Se pretende de esta manera fomentar la enseñanza-aprendizaje de estas asignaturas y dar un enfoque contextualizado a temas abstractos pero que los alumnos puedan encontrar en su vida diaria (como los cambios en la materia, el concepto de onda y la energía). Arduino se puede utilizar para exponer a los alumnos conceptos complejos, haciendo que sean más comprensibles y significativos para los estudiantes y consiguiendo que los alumnos estén más motivados a través de la tecnología y el trabajo colaborativo.
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