A portable Raspberry Pi-based spectrometer for on-site spectral testing

Lin Zhu; Shuwei Yang; Zhibo Xiao; Huachuan Huang; Keding Yan; Shouyu Wang

doi:10.1039/d3ay00464c

A portable Raspberry Pi-based spectrometer for on-site spectral testing

Anal Methods. 2023 Jun 29;15(25):3092-3100. doi: 10.1039/d3ay00464c.

Authors

Lin Zhu^{1

2

3}, Shuwei Yang^{4

5}, Zhibo Xiao^{1

2

3}, Huachuan Huang⁶, Keding Yan⁵, Shouyu Wang^{1

2

7}

Affiliations

¹ Jiangsu Province Engineering Research Center of Integrated Circuit Reliability Technology and Testing System, Wuxi University, Wuxi, Jiangsu, 214105 China.
² OptiX+ Laboratory, School of Electronics and Information Engineering, Wuxi University, Wuxi, Jiangsu, 214105 China.
³ Computational Optics Laboratory, Jiangnan University, Wuxi, Jiangsu, 214122, China.
⁴ School of Intelligent Science and Information Engineering, Xi'an Peihua University, Xi'an, Shaanxi, 710125, China.
⁵ Advanced Institute of Micro-Nano Intelligent Sensing (AIMNIS), School of Electronic Information Engineering, Xi'an Technological University, Xi'an, Shaanxi, 710032, China.
⁶ School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China.
⁷ Single Molecule Nanobiology Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China. shouyu29@cwxu.edu.cn.

PMID: 37335311
DOI: 10.1039/d3ay00464c

Abstract

We designed a portable Raspberry Pi-based spectrometer, which mainly consists of a white LED acting as the wide-spectrum source, a reflection grating for light dispersion, and a CMOS imaging chip aiming at spectral recording. All the optical elements and Raspberry Pi were integrated using 3-D printing structures with a size of 118 mm × 92 mm × 84 mm, and home-built software was also designed for spectral recording, calibration, analysis, and display implemented with a touch LCD. Additionally, the portable Raspberry Pi-based spectrometer was equipped with an internal battery, thus supporting on-site applications. Tested by a series of verifications and applications, the portable Raspberry Pi-based spectrometer could reach a spectral resolution of 0.065 nm per pixel within the visible band and provide spectral detection with high accuracy. Therefore, it can be used for on-site spectral testing in various fields.