Orientador: Angel Fidel Vilche Peña / Resumo: Em meados de 2015, chegou às escolas do Programa de Ensino Integral (PEI) da rede pública estadual, o Kit Robótica Arduino, composto por um conjunto de componentes de eletrônica, sendo uma placa Arduino e dois pequenos livros. Para utilizar esses materiais, a Diretoria de Ensino assumiu a tarefa de capacitar os professores da Área de Ciências da Natureza e suas Tecnologias e contou com o apoio da FCT/UNESP – Campus de Presidente Prudente. Durante as capacitações compostas por Orientações Técnicas – OT – e por Curso, foram verificadas in loco as dificuldades dos professores no manejo com os projetos de Robótica, surgidos principalmente pela carência de conteúdos de eletrônica. Ao término das capacitações e da análise de seus resultados, surgiu a ideia de criar um Manual Simplificado de Eletrônica (Apêndice) com os elementos básicos da Eletrônica e de elaborar Propostas de Atividades Experimentais – PAE – (Apêndice). Foi criada uma metodologia, a fim de tornar mais eficazes as atividades de treinamento de professores focadas no Kit Robótica Arduino. Para avaliar a metodologia, foram realizados experimentos usando a metodologia proposta em uma escola pública de Presidente Prudente, os quais, tendo obtido bons resultados, são discutidos neste trabalho. Espera-se que sua divulgação em outras Diretorias de Ensino da região possa reduzir o tempo utilizado em treinamento de professores, bem como melhorar a competência na implantação da Robótica. Embora a maioria das escolas da rede p... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: In the middle of 2015, schools included in the Integral Education Program of São Paulo State public school system were contemplated with the Arduino Robotics Kit: a set of electronic components, an Arduino Board and two booklets. The Education Department in Presidente Prudente, counting on the support of FCT/UNESP – Presidente Prudente Campus, took on the task of training teachers in the field of Nature Science and its Technologies to improve the use of that material. During training activities – Technical Guidance and Coursework – teachers’ difficulties in developing robotics projects were evidenced, mainly due to their lack of knowledge in electronics. At the end of the developed activities, after having the participants acquired some practice in the subject, came up the ideas of writing a Simplified Manual of Electronics (Appendix) which would contemplate the necessary basic elements for working in this area, as well as elaborating Proposals for Experimental Activities (PAE - Appendix). A methodology was created in order to make teachers’ training focused on Arduino Robotics Kit more effective. To evaluate the methodology, experiments were performed in a public school in Presidente Prudente, which, having obtained good results, are discussed in this paper. It is expected that the dissemination of this work in other regional Education Departments might contribute not only to reduce teachers' training time, but also to achieve better proficiency in implementing Robotics. Alt... (Complete abstract click electronic access below) / Mestre

Šio darbo tikslas suprojektuoti ir sukurti nesudėtingą garsinio signalo apdorojimo realiu laiku įtaisą, populiaraus „Arduino“ mikrovaldiklio pagrindu, kuriuo būtų lengva naudotis ir būtų galimybė pagrindines funkcijas valdyti naudojantis TC/IP protokolu. „Arduino“ mikrovaldiklis pasirinktas dėl jo populiarumo, prieinamos kainos ir dėl gausios informacijos, apie jo panaudojimo galimybes. Be abejo yra daug ir kitų platformų skirtų įvairių prietaisų kūrimui su pakankamai išsamia informacija, bet „Arduino“ platformai yra sukurta nemokama atviro kodo programinė įranga, „Arduino“ kontrolerio programavimui tiesiogiai iš personalinio kompiuterio, nenaudojant papildomų priemonių, dirbanti su Windows ir Unix operacinėmis sistemomis. / Most modern desktop computers are equipped with audio hardware. This hardware allows audio to be recorded as digital information for storage and later playback. This digital information can be manipulated to change how the audio sounds when played back. But if we don’t have a computer, or just need to get some sound effects quickly without recording audio? Maybe You are a student who are learning sound processing hardware and need some examples of audio synthesis? Do you like an “Arduino” and want to see what it can? This device is for You! This small device based on “Arduino” controller makes audio processing in real time, producing some audio effects and also it can play some synthetic sound. In this device is integrated LCD screen, where you can see some information about what the device is doing, when you have pressed one of some buttons on it. Also it is possible to manage the device over the internet. You need just plug in an Ethernet cable, open an internet browser on the computer in local network and add an IP address of this device. You will get small web page where you will found few buttons. By clicking with mouse on these buttons you can listen to a synthetic sound, which system can produce. In this work You will be introduced to the sound signal processing. You will also find graphs and flowchart detailing the sequence of event between the user and system, the exchange of data inside and the static structure of the system in the architectural specification. In... [to full text]

From the compelling need of school to become more attractive to the students, it seeks to stimulate the practices that approach the school contents to the reality, as an alternative to innovate the learning. From the premise that the teaching of algorithm in high school in the traditional way is a hard task in schools, the present work aims to verify the efficiency of the insertion of arduino hardware prototyping platform as Information and Communication Technology to support the process of teaching and learning in the classroom. This work, proposed in the Postgraduate Program in Educational Technologies in Network, in particular in the research line of Development of Educational Technologies in Network, suggests the insertion in traditional methods of teaching of this programmable platform of hardware capable of becoming a support, school help, complementation of class, in order to involve the student, through the exploration of his or her curiosity, associated to the contact and handling of the equipment, in the longing that it substitutes the role of spectator by the leading role in the process of teaching and learning. The educational product described in this work is about five objects of learning constructed from the Arduino hardware, to assist in the comprehension of covered contents in the subject of Programming I in the Technical Computing Course in the campus of IF Farroupilha in Santo Augusto. Each one of the OL (objects of learning) was built to the light of Bloom Taxonomy, which standardizes the language in which the objectives of learning are presented. The other methods used are the ones of qualitative approach and case study. Each object was presented to the students in different pedagogical moments in order to, from each experiment, present one of the contents that introduces the teaching of algorithms. The instruments to conduct the search were based on ethnographic techniques of audio and video recording, besides textual summary, where there was the pedagogical intervention of the researcher, presenting the experiments to the students, which were distributed in pairs or trios. The systemization of data was performed observing the Discursive Textual Analysis, having in mind the need of comprehension of the process. It was possible to realize that the use of experiments in the classroom aroused the interest in the students, in addition to a bigger degree of compromise in the attempt of the students to comply with what was proposed and understand what was happening in each situation problem. The experiments served as a support tool in the learning because the students engaged themselves in the task of discovering in group the correct words to comprehend the meaning of each experiment and systematize it through a textual description and subsequently a pseudocode. It is believed that because of the popularity of Arduino, facility of construction of experiments and because of the fact of being a free technology it is possible to characterize the objects of learning as a viable alternative as a didactic resource to the teaching of algorithms, taking advantage of its potential in public schools, usually lacking in resources. / A partir da necessidade premente da escola tornar-se mais atrativa aos alunos, busca-se estimular as práticas que aproximam os conteúdos escolares da realidade, como alternativa para inovar a aprendizagem. Partindo da premissa de que o ensino de algoritmos no nível médio da maneira tradicional é tarefa árdua nas escolas, o presente trabalho tem como objetivo verificar a eficiência da inserção da plataforma de prototipação de hardware Arduino como Tecnologia de Informação e Comunicação para apoio ao processo de ensino e aprendizagem em sala de aula. Este trabalho, proposto no Programa de Pós Graduação em Tecnologias Educacionais em Rede, mais especificamente na linha de pesquisa Desenvolvimento de Tecnologias Educacionais em Rede, sugere a inserção nos métodos tradicionais de ensino desta plataforma de hardware programável capaz de tornar-se um suporte, reforço ou complementação da aula, para que envolva o aluno, através da exploração de sua curiosidade, aliada ao contato e manuseio do equipamento, no anseio que substitua o papel de expectador pelo de protagonista do processo de ensino e aprendizagem. O produto educacional descrito neste trabalho trata-se de cinco objetos de aprendizagem construídos a partir da ferramenta Arduino, para auxiliar na compreensão de conteúdos abordados na disciplina de Programação I do curso Técnico em Informática no Campus do IF Farroupilha de Santo Augusto. Cada um dos OA foram construídos à luz da Taxonomia de Bloom, que padroniza a linguagem em que os objetivos da aprendizagem são apresentados. Os demais métodos utilizados são o de abordagem qualitativa e estudo de caso. Cada objeto foi apresentado aos alunos, em diferentes momentos pedagógicos, com o intuito de, a partir de cada experimento, apresentar um dos conteúdos que introduz o ensino de algoritmos. Os instrumentos para realização da pesquisa foram baseados em técnicas etnográficas de gravação de áudio e vídeo, além de resumo textual, onde houve a intervenção pedagógica do pesquisador, apresentando os experimentos para os alunos, que estavam distribuídos em duplas ou trios. A sistematização dos dados foi realizada observando a Análise Textual Discursiva, tendo em vista a necessidade de compreender o processo. Foi possível perceber que o uso dos experimentos em sala de aula despertou interesse nos alunos, além de um grau de comprometimento maior na tentativa dos alunos de cumprir o que foi proposto e entender o que se passava em cada situação problema. Os experimentos serviram como ferramenta de auxílio na aprendizagem, pois os alunos empenharam-se na tarefa de descobrir em grupo as palavras corretas para compreender o significado de cada experimento e sistematizá-lo através de uma descrição textual e posteriormente um pseudocódigo. Acredita-se que pela popularidade do Arduino, facilidade de construção dos experimentos e pelo fato de ser uma tecnologia livre, é possível caracterizar os objetos de aprendizagem como uma alternativa viável como recurso didático para o ensino de algoritmos, aproveitando seu potencial em escolas públicas, usualmente carente de recursos.

The Internet was initially built around networks based on physical cables, the next step to improve the accessibility of the Internet came with the introduction of wireless communication. the next step to improving accessibility to the Internet came with the introduction of wireless communication. Because the IoT products are wirelessly connected, they need an internal power source in the form of a battery. Many of the existing communication protocols are therefore not suitable for IoT solutions because they are power consuming. Alternatives to these communication protocols have therefore been developed, for example LTE-M, NB-IoT and LoRaWAN. The study was conducted in cooperation with Etteplan. Etteplan want to invest in LoRaWAN and thus want to gain deeper knowledge within LoRaWAN. Thus, it was chosen to investigate how different factors affect the signal strength transmission time in a LoRaWAN. The focus of the study has thus been on the communication between an IoT node and a receiver in a LoRaWAN, thus the purpose of the study: To show how different data rates, distances and environments affect the quality of information sent from an IoT node to a receiver in LoRaWAN. Design science research was used as a research method, in design science research an artefact is constructed and then studied. In this study, a LoRaWAN was constructed and the communication between an IoT node and receiver in this LoRaWAN was studied. To study the communication between the IoT node and the receiver, two experiments were performed. The experiments were performed simultaneously where the difference was in the data collected, one experiment collected the signal strength and the second the transmission time. The experiment was conducted in two different environments, one with a clear view and one with blockages. In the experiment, the IoT node was positioned at different distances with different data rates. The result of the study shows how different data rates, distances and environments affected the quality of information between an IoT node and receiver and how they relate to previous research. Data rate was the factor that affected the quality of the information most. Data rate had minimal impact on signal strength, but great impact on number of lost data packet and transmission times. The two different environments had no effect on the transmission time, but the signal strength was over 10 dbm lower in the urban environment than with clear view. The distance had no effect on transmission time and minimal impact on signal strength. / Internet var i begynnelsen uppbyggt kring nätverk baserade på fysiska kablar, nästa steg för att förbättra tillgängligheten till Internet kom med introduktionen av trådlös kommunikation. Ett nytt begrepp dök upp vid millennieskiftet, Internet of Things (IoT). Tanken bakom IoT är att olika typer av produkter, som exempelvis tandborstar och kylskåp trådlöst kopplas upp mot Internet. Eftersom IoT-produkterna är trådlöst uppkopplade behöver de en intern strömkälla i form av ett batteri. Många av de existerande kommunikationsprotokollen lämpar sig därför inte för IoT-lösningar eftersom dessa är strömkrävande. Alternativ till dessa kommunikationsprotokoll har därför tagits fram, till exempel LTE-M, NB-IoT och LoRaWAN. Studien utfördes i samarbete med Etteplan. Etteplan vill satsa på LoRaWAN och vill därmed få en djupare kunskap inom LoRaWAN. Därmed valdes det att undersöka hur olika faktorer påverkar signalstyrkan och sändningstiden i ett LoRaWAN. Studiens fokus har därmed varit på kommunikationen mellan en IoT-nod och en mottagare i ett LoRaWAN, därmed är studiens syfte: Att visa på hur olika datahastigheter, avstånd och miljöer påverkar kvaliteten på informationen som sänds från en IoT-nod till en mottagare i ett LoRaWAN. Design science research användes som forskningsmetod då i design science research konstrueras en artefakt som att sedan undersöks. I studiens fall konstruerades ett LoRaWAN där sedan kommunikationen mellan en IoT-nod och mottagare i detta LoRaWAN studerades. För att studera kommunikationen mellan en IoT-nod och en mottagare utfördes två experiment. Experimenten utfördes samtidigt där skillnaden låg i datat som samlades in, det ena experimentet samlade in signalstyrkan och den andra sändningstiden. Experimentet utfördes i två olika miljöer, en med fri sikt och en med blockeringar. I experimentet positionerades IoT-noden på olika avstånd med olika datahastigheter. Resultatet från studien visar hur olika datahastigheter, avstånd och miljöer påverkade kvaliteten på informationen mellan en IoT-nod och mottagare och hur de relateras till tidigare forskning. Datahastigheten var den faktorn som påverkade kvaliteten på informationen mest. Datahastigheten hade minimal påverkan på signalstyrkan, men stor påverkan på antal förlorade datapaket och sändningstider. De två olika miljöerna hade ingen påverkan på sändningstiden, men signalstyrkan var över 10 dbm lägre i stadsmiljön än med fri sikt. Avståndet hade ingen påverkan på sändningstiden och minimal påverkan på signalstyrkan.

Baseado na grande evolução dos dispositivos eletrônicos nos últimos 35 anos e dos novos hardwares de baixo custo e alto poder computacional, esta tese tem como objetivo testar a seguinte hipótese: É possível o controle e automação de um forno em escala piloto com informações de sensores e simulação em tempo real utilizando computação embarcada de baixo custo. Para isto, modelagem matemática e simulação do perfil de temperatura do forno e do alimento foram realizadas para que o sistema de controle possa ter informação da temperatura no alimento em tempo real, contando apenas com os sensores fixos no forno. A informação desta simulação alimenta o controle PID, garantindo que o perfil de temperatura desejado para o aquecimento/cozimento do alimento seja obedecido, melhorando a qualidade do produto final. O sistema de controle possui duas unidades, a escrava que é localizada na lateral do forno é composta de um Arduino mini, da instrumentação para o controle dos sensores e atuadores do forno e a unidade mestre, que utiliza um Raspberry pi onde o software de controle com interface gráfica realiza as simulações, o controle PID e a comunicação via bluetooth com a unidade escrava. Experimentos foram realizados para testar e validar a simulação do perfil térmico do forno, do alimento e o controlador PID. Concluiu-se que é possível um controle de um forno industrial em escala piloto com simulação em tempo real utilizando computação de baixo custo. / Based on the dramatic evolution of electronic devices in the last 35 years and the recent advent of low cost computational hardware, embedded sensors have become a cost-effective solution for real time machine monitoring and simulation. The objective of this thesis is to present both software and hardware intended for the real-time simulation and control of a conveyor belt tunnel oven using low cost embedded hardware, to ensure high quality food production. For this purpose, mathematical modelling and simulation of the temperature profile inside the oven was performed in order to supply the control system with the calculated temperature of the food in real time, using only the fixed sensors inside the oven. This simulation information is passed to the PID controller, ensuring that the desired temperature profile for heating the food is achieved, improving the quality of the final product. The system has two units, a slave that is located on the main body consisting of an Arduino mini and the instrumentation for controlling the sensors and actuators. The second unit is the master unit, which utilises a Raspberry pi to host the control software, the graphical user interface the PID controller and manages the Bluetooth connection with the slave unit. Experiments were performed in order to test and validate the thermal profile simulation of the oven and the food, as well as to test the PID controller. It was concluded that it is possible to control a prototype scale industrial oven using real time simulation with a low-cost computation unit.

CubeSat projects in various universities around the world have become predominant in the study and research for developing CubeSats. Such projects have broadened the scope for understanding this new area of space research. Different CubeSats have been developed by other universities and institutions for different applications. The process of design, development and deployment of CubeSats involves several stages of theoretical and practical work ranging from understanding the concepts associated with communication subsystems, data handling subsystems to innovations in the field like implementing compatible operating systems in the CubeSat processors and new designs of transceivers and other components. One of the future trend setting research areas in CubeSat projects is the implementation of ROS in CubeSat. Robot Operating System (ROS) is aiming to capture the future of many embedded systems including Robotics. In this thesis, an attempt is made to understand the challenges faced during implementing ROS in CubeSat to provide a foundation for the OBDH subsystem and provide important guidelines for future developers relying on ROS run CubeSats. Since using traditional transceivers and power supply would be expensive, we have tried simulating Arduino to act as transceiver and power supply subsystems. Arduino is an open-source physical computing platform based on a simple microcontroller board, and a development environment for writing software for the board designed to make the process of using electronics in major embedded projects more accessible and inexpensive. Another important focus in this thesis has been to establish communication between CubeSat kit and Arduino. The major motivating factor for this thesis was to experiment with and come up with alternate ways which could prove as important measures in future to develop an effective and useful CubeSat by cutting down on development costs. An extensive literature review is carried out on the concepts of Arduino boards and ROS and its uses in Robotics which served as a base to understand its use in CubeSat. Experiment is conducted to communicate the CubeSat kit with Arduino. The results from the study of ROS and experiments with Arduino have been highly useful in drafting major problems and complications that developers would encounter while implementing ROS in CubeSat. Comprehensive analysis to the results obtained serve as important suggestions and guidelines for future researchers working in this field. / One of the future trend setting research areas in CubeSat projects is the implementation of ROS in CubeSat. Robot Operating System (ROS) is aiming to capture the future of many embedded systems including Robotics. In this thesis, an attempt is made to understand the challenges faced during implementing ROS in CubeSat to provide a foundation for the OBDH subsystem and provide important guidelines for future developers relying on ROS run CubeSats. Since using traditional transceivers and power supply would be expensive, we have tried simulating Arduino to act as transceiver and power supply subsystems. Arduino is an open-source physical computing platform based on a simple microcontroller board, and a development environment for writing software for the board designed to make the process of using electronics in major embedded projects more accessible and inexpensive.

Water scarcity for agriculture is one of the most important challenges to improve food security worldwide. In this thesis we study the potential to develop a low-cost controller for a small scale brackish desalination plant that consists of proven water treatment technologies, reverse osmosis, cation exchange, and nanofiltration to treat groundwater into two final products: drinking water and irrigation water. The plant is powered by a combination of wind and solar power systems. The low-cost controller uses Arduino Mega, and Arduino DUE, which consist of ATmega2560 and Atmel SAM3X8E ARM Cortex-M3 CPU microcontrollers. These are widely used systems characterized for good performance and low cost. However, Arduino also requires drivers and interfaces to allow the control and monitoring of sensors and actuators. The thesis explains the process, as well as the hardware and software implemented.

Miljö och miljöfrågor ar något som blir allt mer viktigt i takt med att nya miljöutmaningar växer fram. Som enskild medborgare kan man vara en del i att verka för en bättre miljö genom att återvinnahushållsavfall av olika slag och textilier, i någon av de återvinningscontainrar som finns placerade på platser över hela landet. Idag finns det inget sätt att kunna veta om den station dit man går för att kasta sitt avfall är full eller om det finns utrymme kvar. Organisationer som har containrar får i den mån det är möjligt förlita sig på statistik, men ofta händer det att en station har containrar som är överfulla. Det här projektet undersöker möjligheterna till ett system med mat enheter i återvinningscontainrar som själva laddar upp data till en server när fyllnadsnivån i containern ökat väsentligt. En prototyp för enmatenheten tas fram med hjälp av Arduinobaserad teknik och testas i containrar tillhörande organisationen Myrorna som bland annat bedriver insamling av kläder. Parallellt utvecklas enserverapplikation med en databas dit matenheten laddar upp sin matdata. En enkel iOS-app utvecklas som hämtar senaste rapporteringen från matenheten via servern och presenterar den. Matenhetens strömförbrukning undersöks och det visar sig att prototypens strömförbrukning gör att batterierna i teorin skulle racka mer än ett år. Kostnaden för prototypen ger en fingervisning om produktens framtida kostnad, vilken författaren anser vara låg. Med detta system i drift finns möjligheter att skapa applikationer till organisationer med containrar för att förbattra deras hantering av insamling av avfall. Informationen kan även ges, till exempel via en mobilapp, till den som är intresserad av att lämna avfall till återvinning. / The environment and environmental issues grows more and more important as new challenges in the topic appear. Citizens can help to improve the environment by recycling their household waste of various kind and textiles in some of the recycling stations that are located on places all over the country.Today there is no way to know if the station one wants to visit to recycle waste, has room left in thespecific container. Organisations that have and manage containrar today have to rely on statistics, but often it happens that a station have containrar that are completely full. This project investigates the possibilities of putting measuring devices into containrar that will upload data about the current fill level to a server, when the fill level changes significantly. A prototype for the measurement device is constructed using Arduino based technology and it is tested in containrar belonging to the organisation Myrorna that amongst other things collect used clothes. In parallell, a server application with a database is developed to which the measurement device uploads it’s data. Also developed is a simple iOS-app that retreives the latest information from the measurement device throughthe server and presents it. The power consumption of the measurement device is examined and it turns out that the batteries of the prototype in theory will last more than a year.The cost of the prototype gives a hint of the future product’s cost, which the writer considers to be low. With this system in use there are possibilities to create applications for organisations managing containrar to improve their handling of collecting waste. The information can also be delivered, for instance through a mobile app, to anyone who wants to leave their waste for recycling.

The competition in the car market in the world is continuously intensifying. To gain an advantage in the market while making a profit, each car manufacturer needs a strong focus on always improving in the technology development. It is not just technology of the cars that need development, but it is equally important to improve the manufacturing processes itself. In the end, this will result in more appealing products for the customer at a competitive cost. The aim and scope of this master thesis is to get a deeper understanding of the forces in the stamping die during sheet metal forming in manufacturing. By using strain gauges and microcontrollers, the forces during the entire forming process could be measured and analyzed. The relationship between the force on the pressure pins in the die and the length of the pressure pins was also investigated by adding shims on the pressure pins. A modular system using Arduino Uno with 3D-printed parts was developed to measure the forces in the blank holder during sheet metal forming. An Arduino software system and TeraTerm was found the most appropriate for collecting and organizing data from the strain gauge sensors and microcontrollers. Tests were then conducted using different settings of the press, and these showed that the forces in the blank holder were uneven. Adding shims to the pins so that they were all of equal length evened out the forces in the blank holder. Another test showed that adding more shims to only one of the pins increased the force in that pin, and that adding 0.5mm of shims to that pin more than doubled the maximum force. The system developed in this thesis can measure the forces in the blank holder during the sheet forming process at a lower speed of production. This system can also detect different force settings in the press. Lastly, it can also detect a difference in force for different pressure pin lengths. / Konkurrensen på bilmarknaden i världen intensifieras kontinuerligt. För att få en fördel påmarknaden samtidigt som de gör vinst måste varje biltillverkare ha ett starkt fokus på att alltid förbättrateknikutvecklingen. Det är inte bara bilens teknik som behöver utvecklas, utan det är lika viktigt attförbättra tillverkningsprocesserna i sig. I slutändan kommer detta att resultera i mer attraktiva produkterför kunden till ett konkurrenskraftigt pris. Syftet och omfattningen av detta examensarbete är att få en djupare förståelse av krafterna ipressverktyget under plåtformningprocessen. Genom att använda töjningsgivare och mikrokontrollerkunde krafterna under hela formningsprocessen mätas och analyseras. Förhållandet mellan kraften påmothållarpinnarna i verktyget och längden på pinnarna undersöktes också genom att lägga till shims påpinnarna. Ett modulsystem som använde Arduino Uno med 3D-printade delar utvecklades för att mätakrafterna i formen under formningsprocessen. Ett Arduino-mjukvarusystem och TeraTerm bedömdesvara det mest lämpliga för att samla in och organisera data från töjningssensorer och mikrokontroller. Tester genomfördes sedan med olika inställningar i pressen, och dessa visade att krafterna ipressverktyget var ojämna. Genom att lägga till shims på pinnarna så att de alla var lika långa utjämnadeskrafterna i pressverktyget. Ett annat test visade att genom att lägga till fler shims på endast en avmothållarpinnarna ökade kraften i pinnen. Genom att tillägg till 0,5 mm shims på den pinnen mer änfördubblade den maximala kraften. Systemet som utvecklats i denna rapport kan mäta krafterna i pressverktygets mothållarpinnarunder formningsprocessen vid en lägre produktionshastighet. Detta system kan också upptäcka olikakraftinställningar i pressen. Slutligen kan den också upptäcka skillnader i kraft vid olika längder påmothållarpinnarna.

Detta är ett kandidatexamensarbete i mekatronik där ett elektroniskt hänglås med Bluetooth designas, konstrueras och utvärderas. Forskningsfrågorna som besvaras lyder enligt följande: Hur kan de mekaniska delarna utformas och integreras med elektroniken för en enkel och pålitlig konstruktion av ett elektroniskt hänglås? Vilka användningsområden är fördelaktiga för ett elektroniskt hänglås med Bluetooth? En prototyp av hänglåset designas i CAD och produceras sedan med hjälp av 3D-printing. Den elektroniska kretsen styrs av en Arduino Nano, som kontrollerar en servomotor, vilken i sin tur vrider låsmekanismen. Tester utförs på prototypens batteritid, Bluetooth-räckvidd och mekanism. Testerna visar att prototypen har en batteritid på 27 timmar, en- Bluetooth-räckvidd på 8 meter och en mekanism som fungerar felfritt. Utöver detta identifieras en rad brister angående låsets säkerhet och funktionalitet. Således visar undersökningen att ett elektroniskt hänglås med Bluetooth-funktion kan konstrueras på ett enkelt och pålitligt sätt, men slutsatsen dras att dess användnings områden begränsas tilllåsning under korta perioder där bekvämlighet är högre prioriterat än säkerhet. / This is a bachelor’s thesis in mechatronics where an electronic padlock is designed, constructed and evaluated. The research questions for the thesis are: How can the mechanical parts be designed and integrated with the electronics to create a simple and reliable construction of an electronic padlock? What use cases are advantageous for an electronic padlock using Bluetooth? A prototype of the padlock is designed in CAD and produced using 3D-printing. The electronic circuit is controlled by an Arduino Nano, which controls a servo motor, which in turn operates the locking mechanism. Tests are conducted on the prototype's battery, Bluetooth-range and mechanism. The tests show that the prototype has a battery-life of 27 hours, a Bluetooth range of 8 meters and a mechanism that works without fail. Additionally a number of fl aws are identified with the prototype, both regarding its security and functionality. The research thus shows that an electronic padlock using Bluetooth is possible to create in a simple and reliable way, but the conclusion is drawn that its use cases are limited to locking things during short periods, where user comfort is prioritized above security.