High-resolution Arduino-based data acquisition devices for microscale separation systems


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Year of publication 2021
Type Article in Periodical
Magazine / Source Analytica Chimica Acta
MU Faculty or unit

Faculty of Science

Web https://www.sciencedirect.com/science/article/pii/S0003267021001203
Doi http://dx.doi.org/10.1016/j.aca.2021.338294
Keywords Open source hardware and software; Arduino; Data acquisition; Microscale separations; Capillary electrophoresis
Description In this work, we have designed, constructed, and evaluated simple, inexpensive open-source data acquisition systems based on various analog-to-digital converter modules (ADS 1115, MCP 3424, LTC 2400, with resolution from 16 to 24-bit) and a miniature Arduino Nano TM microcontroller. The con-structed data acquisition systems provide excellent performance and are comparable to a commercial, 24-bit device. We provide full schematics and corresponding source codes so that analytical chemists can easily construct any of the developed systems without extensive electronic or programming knowledge. The 24-bit LTC 2400 based device provided the best and comparable performance to a commercial, high -end 24-bit sigma to delta converter (ORCA 2800) at a fraction of cost (less than 50 USD compared to 870 USD for the commercial counterpart). The excellent performance was verified using a capillary elec-trophoresis system with contactless conductivity detection and separation of inorganic ions in clinical skin wipe and tap water samples.
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