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* Quick download of [Youmagine STLs] | * Quick download of [Youmagine STLs] | ||
* Older version: [{3-D Printable Digital Balance]] | * Older version: [{3-D Printable Digital Balance]] | ||
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Revision as of 21:16, 27 June 2020
Source
- Benjamin R. Hubbard and Joshua M. Pearce. Open Source Digitally Replicable Lab-Grade Scales. Instruments 2020, 4, 18; https://doi.org/10.3390/instruments4030018 open access preprint
- Repository contains all source code of designs, paper contains instructions for assembly and use
- Quick download of [Youmagine STLs]
- Older version: [{3-D Printable Digital Balance]]
Open Source Digitally Replicable Lab-Grade Scale in Use |
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Abstract
This study provides designs for a low-cost, easily replicable open-source lab-grade digital scale that can be used as a precision balance. The design is such that it can be manufactured for use in most labs throughout the world with open-source RepRap-class material extrusion-based 3-D printers for the mechanical components and readily available open-source electronics including the Arduino Nano. Several versions of the design were fabricated and tested for precision and accuracy for a range of load cells. The results showed the open-source scale was found to be repeatable within 0.05 g with multiple load cells, with even better precision (0.005 g) depending on load cell range and style. The scale tracks linearly with proprietary lab-grade scales, meeting the performance specified in the load cell data sheets, indicating that it is accurate across the range of the load cell installed. The smallest load cell tested (100 g) offers precision on the order of a commercial digital mass balance. The scale can be produced at significant cost savings compared to scales of comparable range and precision when serial capability is present. The cost savings increase significantly as the range of the scale increases and are particularly well-suited for resource-constrained medical and scientific facilities.
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Keywords
open source hardware; 3-D printing; additive manufacturing; distributed manufacturing; laboratory equipment; open hardware; open source; scale; balance; mass
See Also
- Open Source Lab
- Building research equipment with free, open-source hardware
- Open source science
- Open-source hardware
- Open-source syringe pump
- Open Source 3-D Printed Nutating Mixer
- Open Source Laboratory Sample Rotator Mixer and Shaker
- 3-D printable open source dual axis gimbal system for optoelectronic measurements