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Difference between revisions of "Open Source Digitally Replicable Lab-Grade Scales"

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* [https://osf.io/me9a8/ Repository contains all source code of designs], paper contains instructions for assembly and use
 
* [https://osf.io/me9a8/ Repository contains all source code of designs], paper contains instructions for assembly and use
 
* Quick download of [Youmagine STLs]
 
* Quick download of [Youmagine STLs]
 
+
* Older version: [{3-D Printable Digital Balance]]
 
[[image:Oscale.png|right|600px]]
 
[[image:Oscale.png|right|600px]]
  

Revision as of 21:04, 27 June 2020


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Source

Oscale.png
Open Source Completely 3-D Printable Centrifuge

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.

Status
This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been modeled.
This OSAT has been prototyped.
This OSAT has been verified by: MOST.

You can help Appropedia by contributing to the next step in this OSAT's status.


Keywords

open source hardware;  3-D printing; additive manufacturing; distributed manufacturing; laboratory equipment; open hardware; open source; scale; balance; mass


See Also