General Design Procedure for Free and Open-Source Hardware for Scientific Equipment

Oberloier, Shane; Pearce, Joshua M.

doi:10.3390/designs2010002

Cited by 85 publications

(64 citation statements)

References 48 publications

(59 reference statements)

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“…This study joins several others [21,25,67] and stands as a testament to the effectiveness of open source technology as a hardware development platform. Very few components to this mill were designed from scratch thanks to contributions like D3D [51], RAMPS [55], Marlin [56], and communities, such as OSE and Arduino that provide helpful support groups and openly welcome contributions back to their library of work.…”

Section: Open Source As Development Platformmentioning

confidence: 60%

“…Very few components to this mill were designed from scratch thanks to contributions like D3D [51], RAMPS [55], Marlin [56], and communities, such as OSE and Arduino that provide helpful support groups and openly welcome contributions back to their library of work. Open source is typically modular and scalable, which maximizes its potential applications [67]. Because of open source emphasis on DM, this machine was capable of being manufactured with a minimum number of tools, or knowledge of manufacturing Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 13 August 2018 doi:10.20944/preprints201808.0233.v1…”

Section: Open Source As Development Platformmentioning

confidence: 99%

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Belt-Driven Open Source Circuit Mill Using Low-Cost 3-D Printer Components

Oberloier¹,

Pearce

2018

Preprint

Self Cite

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Barriers to inventing electronic devices involve challenges of iterating electronic designs due to long lead times for professional circuit board milling or high-costs of commercial milling machines. To overcome these barriers this study provides open source (OS) designs for a low-cost circuit milling machine. First, design modifications for mechanical and electrical sub-systems of the OS D3D Robotics prototyping system are provided. Next, Copper Carve, an OS custom graphical user interface, is developed to enable circuit board milling by implementing backlash and substrate distortion compensation. The performance of the OS D3D circuit mill is then quantified and validated for: positional accuracy, cut quality, feature accuracy and distortion compensation. Finally, the return on investment is calculated for inventors using it. The results show by properly compensating for motion inaccuracies with Copper Carve, the machine achieves a motion resolution of 10 microns, which is more than adequate for most circuit designs. The mill is at least five times less expensive than all commercial alternatives and the material costs of the D3D mill are repaid from fabricating 20-43 boards. The results show that the OS circuit mill is of high-enough quality to enable rapid invention and distributed manufacturing of complex products containing custom electronics.were economically viable even when used for only fabricating hard plastic toys [35] or flexible products from relatively-expensive specialty 3-D printing filament [36]. However, currently DM has matured primarily in mechanical products and components because of widespread cost declines due to the open sourcing of 3-D printing [37]. Open source electronics has created many successful companies, because various open hardware business models work well with hobbyist electronics [38], however, DM of electronics is not as mature. For example, the fabrication stations at Home Depot [18] and the U.S. Postal service [19] only include mechanical prototyping, but do not offer electronics prototyping. The lack of maturity in DM of open source electronics is a limiting factor in the complexity of products. There are two primary reasons for the slow adoption of DM circuit boards. First, there is a lack of unified sources for pre-designed projects, equivalent to sources for 3-D printable models like MyMiniFactory [39], Thingiverse [40], and YouMagine [41] or the search engine Yeggi [42]. There are some sources of FOSH circuitry such as Open Circuit Institute [43] and Open Circuits [44], though they have not been widely adopted. Most importantly, there are no widely recognized low-price FOSH circuit milling machines equivalent to the RepRap 3-D printers that can be built by consumers or purchased from companies like Lulzbot [45], re:3D [46] and Ultimaker [47]. The existing mills on the market are either prohibitively expensive [48], or lack proper documentation and are difficult to tune due to reliance on closed source designs [49]. The current traditional methods of circuit board procu...

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Section: Open Source As Development Platformmentioning

confidence: 60%

Section: Open Source As Development Platformmentioning

confidence: 99%

Belt-Driven Open Source Circuit Mill Using Low-Cost 3-D Printer Components

Oberloier¹,

Pearce

2018

Preprint

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“…Any of the OSH licenses can be used in the framework. Oberloier and Pearce () detail formal procedures for designers of OSH.…”

Section: A Framework To Support Osh For Conservationmentioning

confidence: 99%

Leveraging conservation action with open‐source hardware

Hill

Davies

Prince

et al. 2019

CONSERVATION LETTERS

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Data collection by conservation biologists is undergoing radical change, with researchers collaborating across disciplines to create bespoke, low‐cost monitoring equipment from open‐source hardware (OSH). Compared to commercial hardware, OSH dramatically reduces participation costs. Four barriers currently hold back its wide adoption: (1) user inexperience inhibits initial uptake; (2) complex and costly manufacturing/distribution procedures impede global dissemination; (3) lack of creator support results in lapsed projects; and (4) lack of user support degrades continued utility in the field. Here, we propose a framework to address these barriers, illustrating how OSH offers a route to rapid expansion of community‐driven conservation action.

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“…This study attempts to a provide a new low-cost but medium-scale technology for transforming plastic recyclables into usable 3D printing feedstock in the form of granules (or particles). In order to provide a low-cost tool for making polymer feedstock from post-consumer waste this study follows the open-source hardware design paradigm [61,62], which has proven so successful for 3D printing in general. A novel open source waste plastic granulator system is designed, built, and tested for its ability to convert post-consumer waste, 3D printed products, and 3D printer waste into polymer feedstock for recyclebots of FGF/FPF printers.…”

Section: Introductionmentioning

confidence: 99%

Open Source Waste Plastic Granulator

et al. 2019

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In order to accelerate deployment of distributed recycling by providing low-cost feed stocks of granulated post-consumer waste plastic, this study analyzes an open source waste plastic granulator system. It is designed, built, and tested for its ability to convert post-consumer waste, 3D printed products and waste into polymer feedstock for recyclebots of fused particle/granule printers. The technical specifications of the device are quantified in terms of power consumption (380 to 404 W for PET and PLA, respectively) and particle size distribution. The open source device can be fabricated for less than $2000 USD in materials. The experimentally measured power use is only a minor contribution to the overall embodied energy of distributed recycling of waste plastic. The resultant plastic particle size distributions were found to be appropriate for use in both recyclebots and direct material extrusion 3D printers. Simple retrofits are shown to reduce sound levels during operation by 4dB-5dB for the vacuum. These results indicate that the open source waste plastic granulator is an appropriate technology for community, library, maker space, fab lab, or small business–based distributed recycling.

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General Design Procedure for Free and Open-Source Hardware for Scientific Equipment

Cited by 85 publications

References 48 publications

Belt-Driven Open Source Circuit Mill Using Low-Cost 3-D Printer Components

Belt-Driven Open Source Circuit Mill Using Low-Cost 3-D Printer Components

Leveraging conservation action with open‐source hardware

Open Source Waste Plastic Granulator

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