Journal of Open Hardware最新文献_第2页

Developing a Computer-Controlled Treat Dispenser for Canine Operant Conditioning 一种计算机控制的犬类操作条件处理机的研制

Journal of Open Hardware Pub Date : 2020-10-28 DOI: 10.5334/joh.27

Walker Arce, J. Stevens

{"title":"Developing a Computer-Controlled Treat Dispenser for Canine Operant Conditioning","authors":"Walker Arce, J. Stevens","doi":"10.5334/joh.27","DOIUrl":"https://doi.org/10.5334/joh.27","url":null,"abstract":"When performing canine operant conditioning studies, the delivery of the reward can be a limiting factor of the study. While there are a few commercially available options for automatically delivering rewards, they generally require manual input, such as using a remote control, in accordance with the experiment script. This means that human reaction times and transmission distances can cause interruptions to the flow of the experiment. The potential for development of non-supervised conditioning studies is limited by this same factor. To remedy this, we retrofitted an off-the-shelf treat dispenser with new electronics that allow it to be remotely controllable as well as act as an experiment computation, data storage, and networking center. We present a fully integrated dispenser driver board with a complementary Raspberry Pi. With rather simple modifications, the commercial treat dispenser can be modified into a computer-controlled dispenser for canine cognition experiments or for other forms of canine training or games. Funding Statement: This research was supported by a National Science Foundation grant to JRS (SES-1658837), including a Research Experiences for Undergraduates (REU) stipend to WA, and by a University of Nebraska-Lincoln Research Council Grant-in-Aid to JRS.","PeriodicalId":176907,"journal":{"name":"Journal of Open Hardware","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132532352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Vibration Alert Bracelet for Notification of the Visually and Hearing Impaired 震动警报手环通知视觉和听觉受损

Journal of Open Hardware Pub Date : 2019-10-02 DOI: 10.5334/joh.17

K. Conley, Alex Foyer, Patrick Hara, T. Janik, Jason Reichard, J. D’Souza, C. Tamma, Cristinel Ababei

{"title":"Vibration Alert Bracelet for Notification of the Visually and Hearing Impaired","authors":"K. Conley, Alex Foyer, Patrick Hara, T. Janik, Jason Reichard, J. D’Souza, C. Tamma, Cristinel Ababei","doi":"10.5334/joh.17","DOIUrl":"https://doi.org/10.5334/joh.17","url":null,"abstract":"This paper presents the prototype of an electronic vibration bracelet designed to help the visually and hearing impaired to receive and send emergency alerts. The bracelet has two basic functions. The first function is to receive a wireless signal and respond with a vibration to alert the user. The second function is implemented by pushing one button of the bracelet to send an emergency signal. We report testing on a prototype system formed by a mobile application and two bracelets. The bracelets and the application form a complete system intended to be used in retirement apartment communities. However, the system is flexible and could be expanded to add new features or to serve as a research platform for gait analysis and location services. The medical and professional potential of the proposed system is that it offers a simple, modular, and cost-effective alternative to all the existing medical devices with similar functionality currently on the market. The proposed system has an educational potential as well: it can be used as a starting point for capstone projects and demonstration purposes in schools to attract students to STEM disciplines.","PeriodicalId":176907,"journal":{"name":"Journal of Open Hardware","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127127760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

CubeFactory2 – an Off-Grid and Circular 3D-Printing Mini-Factory CubeFactory2 -一个离网和圆形3d打印迷你工厂

Journal of Open Hardware Pub Date : 2019-07-08 DOI: 10.5334/JOH.15

Bernd Muschard, J. Bonvoisin

{"title":"CubeFactory2 – an Off-Grid and Circular 3D-Printing Mini-Factory","authors":"Bernd Muschard, J. Bonvoisin","doi":"10.5334/JOH.15","DOIUrl":"https://doi.org/10.5334/JOH.15","url":null,"abstract":"The CubeFactory2 is a self-sufficient and luggage-sized production unit illustrating the concept of sustainable manufacturing through circularity and resource conservation. It is circular in the sense that it can create new products out of waste. It embeds a Fuse Filament Fabrication 3D-printer whose input material is supplied by a recycling unit producing filament out of thermoplastic waste. It saves resources in the sense that it embeds renewable energy and material supply to recycle and 3D-print without the need for further infrastructure. In its current state of development, the purpose of the CubeFactory2 is primarily illustrative and to support awareness on sustainable manufacturing. If offers an experienceable application of the concepts of circularity and resource conservation. The long term vision is to take advantage of its compactness, portability and autonomy, in order to enable fabrication in areas of low infrastructure. The CubeFactory2 combines off-the-shelf and custom subsystems, the four mains of which are a 3D-printer, a recycler, an energy supply unit, and a casing. The present hardware meta-paper describes the design rationale of these systems and offers complementary information to the published open source hardware design files. Great care has been paid in the design process to enable replicability by using standard components when possible and releasing all documentation of bespoke elements following open source standards. This article should contribute to make this functional proof of concept ready for replication and for further development towards a market-ready product.","PeriodicalId":176907,"journal":{"name":"Journal of Open Hardware","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116714584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

On the Economic Value of Open Source Hardware – Case Study of an Open Source Magnetic Resonance Imaging Scanner 论开源硬件的经济价值——以开源磁共振成像扫描仪为例

Journal of Open Hardware Pub Date : 2019-05-20 DOI: 10.5334/JOH.14

Manuel Moritz, T. Redlich, Süleyman Günyar, L. Winter, J. Wulfsberg

{"title":"On the Economic Value of Open Source Hardware – Case Study of an Open Source Magnetic Resonance Imaging Scanner","authors":"Manuel Moritz, T. Redlich, Süleyman Günyar, L. Winter, J. Wulfsberg","doi":"10.5334/JOH.14","DOIUrl":"https://doi.org/10.5334/JOH.14","url":null,"abstract":"Increasing maturation and dissemination of easy-to-use and affordable means of digital production (e.g. 3D printing), access to these in makerspaces and FabLabs as well as powerful tools and online platforms for virtual and collaborative product design enabled the highly efficient and innovative mode of open source to spill over from software to hardware. Open source technology has enormous potential to spur innovation and enhance technological literacy and thus contribute to socioeconomic and ecological sustainability. Like in software, open source hardware (OSH) projects and online communities have evolved in a broad range of technologies and applications. In these communities, people from all over the world with diverse backgrounds (students, researchers, consumers, users etc.) gather online to jointly develop, revise, improve and freely share hardware designs and documentation. Additionally, people may build, adapt, use and sell physical artefacts based on these designs in accordance with the notion of open source. The (potential) economic impact and value of open source hardware is hard to quantify as contributors usually do not get paid and users do not necessarily buy products from vendors. Nonetheless, value is created as in the case of Linux or Wikipedia. We applied established valuation methods for open source hardware to quantify cost savings and as a result the value of an open source magnetic resonance imaging device (MRI) currently under development by the Open Source Imaging Initiative (OSI2). Depending on the scenario and the valuation method, we found that savings for healthcare systems from US$1.8 million up to US$222 million per year are possible in the near future making the case for public funding and private investment in open source technology development.","PeriodicalId":176907,"journal":{"name":"Journal of Open Hardware","volume":"258 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132272827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

3D-Printable Model of a Particle Trap: Development and Use in the Physics Classroom 粒子陷阱的3d打印模型:在物理课堂上的发展和使用

Journal of Open Hardware Pub Date : 2019-04-08 DOI: 10.5334/JOH.12

Lachlan P. McGinness, Susanne Dührkoop, Alexandra Jansky, O. Keller, A. Lorenz, S. Schmeling, K. Wendt, J. Woithe

{"title":"3D-Printable Model of a Particle Trap: Development and Use in the Physics Classroom","authors":"Lachlan P. McGinness, Susanne Dührkoop, Alexandra Jansky, O. Keller, A. Lorenz, S. Schmeling, K. Wendt, J. Woithe","doi":"10.5334/JOH.12","DOIUrl":"https://doi.org/10.5334/JOH.12","url":null,"abstract":"Quadrupole ion traps are modern and versatile research tools used in mass spectrometers, in atomic frequency and time standards, in trapped ion quantum computing research, and for trapping anti-hydrogen ions at CERN. Despite their educational potential, quadrupole ion traps are seldom introduced into the physics classroom not least because commercial quadrupole ion traps appropriate for classroom use are expensive and difficult to set up. We present an open hardware 3D-printable quadrupole ion trap suitable for the classroom, which is capable of trapping lycopodium spores. We also provide student worksheets developed in an iterative design process, which can guide students while discovering particle traps. The quadrupole ion trap operates using a 3 kV 50 Hz alternating current power supply and uses an astable multivibrator circuit including high luminosity LEDs to illuminate the spores, using the stroboscopic effect to exhibit their movement. The trap can be used in teaching laboratories to enhance high school and university students’ understanding of electric fields and their applications.","PeriodicalId":176907,"journal":{"name":"Journal of Open Hardware","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131773827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A Cartesian Coordinate Robot for Dispensing Fruit Fly Food 一种分配果蝇食物的直角坐标机器人

Journal of Open Hardware Pub Date : 2018-07-31 DOI: 10.5334/JOH.9

M. Wayland, M. Landgraf

{"title":"A Cartesian Coordinate Robot for Dispensing Fruit Fly Food","authors":"M. Wayland, M. Landgraf","doi":"10.5334/JOH.9","DOIUrl":"https://doi.org/10.5334/JOH.9","url":null,"abstract":"The fruit fly, Drosophila melanogaster, continues to be one of the most widely used model organisms in biomedical research. Though chosen for its ease of husbandry, maintaining large numbers of stocks of fruit flies, as done by many laboratories, is labour-intensive. One task which lends itself to automation is the production of the vials of food in which the flies are reared. Fly facilities typically have to generate several thousand vials of fly food each week to sustain their fly stocks. The system presented here combines a cartesian coordinate robot with a peristaltic pump. The design of the robot is based on an open hardware CNC (computer numerical control) machine, and uses belt and pulley actuators for the X and Y axes, and a leadscrew actuator for the Z axis. CNC motion and operation of the peristaltic pump are controlled by grbl (gnea 2018), an open source, embedded, G-code parser. Grbl is written in optimized C and runs directly on an Arduino. A Raspberry Pi is used to generate and stream G-code instructions to Grbl. A touch screen on the Raspberry Pi provides a graphical user interface to the system. Whilst the robot was built for the express purpose of filling vials of fly food, it could potentially be used for other liquid handling tasks in the laboratory.","PeriodicalId":176907,"journal":{"name":"Journal of Open Hardware","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124376997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Review of Current Simple Ultrasound Hardware Considerations, Designs, and Processing Opportunities 回顾当前简单超声硬件的考虑，设计和加工机会

Journal of Open Hardware Pub Date : 1900-01-01 DOI: 10.5334/joh.28

Luc Jonveaux, Carla Schloh, William Meng, Jorge Arija, Jean L. Rintoul

引用次数: 2

Kleinvoet: a Spatially-Distributed Temporally-Synchronised Infrasonic Recorder Kleinvoet:一种空间分布、时间同步的次声记录仪

Journal of Open Hardware Pub Date : 1900-01-01 DOI: 10.5334/joh.58

Christiaan M. Geldenhuys, T. Niesler

引用次数: 0

Geophysical Open Seismic Hardware: Design of a Vertical Seismic Profiling Instrument 地球物理开放地震硬件:垂直地震剖面仪的设计

Journal of Open Hardware Pub Date : 1900-01-01 DOI: 10.5334/joh.50

A. Mercier, J. Dupuis, B. Giroux

{"title":"Geophysical Open Seismic Hardware: Design of a Vertical Seismic Profiling Instrument","authors":"A. Mercier, J. Dupuis, B. Giroux","doi":"10.5334/joh.50","DOIUrl":"https://doi.org/10.5334/joh.50","url":null,"abstract":"Geophysics can help provide guidance as we adapt to our changing environment. However, with advent of microelectronics, embedded systems and field programmable gate arrays, geophysical instruments have largely become a black box for most users: experiments are limited by the budgets that are available rather than the imagination of the geoscientific community. The solution we propose is to introduce affordable, modular and lightweight multi-component seismic instruments that can be deployed easily by researchers and explorers alike. We have developed a system that allows seismic data acquisition using very sensitive and compact accelerometers. These sensors are coupled to high-speed, multi-channel 24-bit downhole acquisition modules that were developed for this project. The control and synchronization of the system is engineered around microcontrollers that are compatible with the Arduino ecosystem. Communication between the parts of the system is done via a novel frequency modulated RS-485 communication protocol. This protocol makes it possible to send power and data over a wireline with only two conductors. The small diameter and the low cost of this system facilitates the deployment of a large number of channels or in configurations that may not be feasible with commercial equipment. The modular nature of the system makes it easy to adapt to other downhole applications or for draggable sensor arrays on surface. We consider that these efforts will contribute to the democratization of seismic survey in exploration, civil engineering and water prospecting to help reduce the global environmental impacts of human activities.","PeriodicalId":176907,"journal":{"name":"Journal of Open Hardware","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126266456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Jubilee: A Case Study of Distributed Manufacturing in an Open Source Hardware Project Jubilee:开源硬件项目中的分布式制造案例研究

Journal of Open Hardware Pub Date : 1900-01-01 DOI: 10.5334/joh.51

Kellie Dunn, Cynthia Feng, Nadya Peek

引用次数: 0