Open Source Laboratory Sample Rotator Mixer and Shaker

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Summary This laboratory sample rotator was designed for tumbling and gentle mixing in various tube sizes by rotating samples horizontally, vertically, or at any angle in between. Adjusting the mixing angle is quick and easy, requiring no tools. The device features a built-in Arduino-based microcontroller that adds laboratory sample shaker functionality. Users can customize both the mechanical and functional aspects of these devices by selecting operation modes on switches or altering code to perform custom experiments. Open source laboratory sample rotator mixers can be built by non-specialists for under $30, while adding shaking functionality costs an additional $20. As a result, these open source devices outperform proprietary commercial equipment in terms of technology while saving over 90% of the costs. For complete BOMs, codes, design files, STLs, and instructions, visit the main source page and paper here: Karankumar C. Dhankani, Joshua M. Pearce. Open Source Laboratory Sample Rotator Mixer and Shaker. HardwareX 1, pp. 1-12 (2017). doi: j.ohx.2016.07.001 open access This is just one example of making an open source lab.