• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2021, Volume: 14, Issue: 8, Pages: 698-706

Original Article

A low-cost absorbance measurement device using microcontroller

Received Date:29 January 2021, Accepted Date:02 March 2021, Published Date:15 March 2021


Objectives: To design a low-cost absorbance measurement device using a microcontroller that can be used for student’s learning. Methods/Statisticalanalysis: The setup device is designed based upon Beer-Lambert Law with some LEDs through various sample solutions along with LDR at a different range of wavelength and the results are shown on a 16x2 LCD by use of a PIC16F877a microcontroller. The results are also compared with the standard colorimetric method. Findings: The setup device able to measure the absorbance of different colors of sample solutions at a wide range of wavelength (400-700nm) and measured by utilizing different LEDs to the transmitter end and an LDR at the receiver end. The proposed experimental device’s performance was compared with the standard colorimeter for efficiency check. The efficiency of the setup device is near to the colorimeter of more than 95%. Novelty/Applications: For educational purpose, the proposed setup device is well affordable due to low cost (US$10.98) and easy to maintain because of compact size and data acquisition directly through microcontroller.

Keywords: Colorimeter; absorbance; wavelength; LCD; microcontroller


  1. Kittipanyangam S, Do W, Abe K, Eguchi K. One Color Light Absorbance Measurement Device by Fuzzy Theory. Proceedings of the 6th IIAE International Conference on Industrial Application Engineering. 2018. Available from: https://doi.org/10.12792/iciae2018.009
  2. O’Donoghue J. Simplified Low-Cost Colorimetry for Education and Public Engagement. Journal of Chemical Education. 2019;96(6):1136–1142. Available from: https://dx.doi.org/10.1021/acs.jchemed.9b00301
  3. Pereira M, Postolache O, Girão P, Ramos H. Colored Light-to-Voltage Converters Based Absorbance Meter. International Scientific Journal of Computing. 2003;2(1):58–64. Available from: https://citeseerx.ist.psu.edu/viewdoc/download?doi=
  4. Yeh TS, Tseng SS. A Low Cost LED Based Spectrometer. Journal of the Chinese Chemical Society. 2006;53(5):1067–1072. Available from: https://dx.doi.org/10.1002/jccs.200600142
  5. Kittipanyangam S, Do W, Abe K, Eguchi K. Design of a Hand-Made Light Absorbance Measurement Device for Chemical Education. International Journal of Innovative Computing, Information and Control. 2016;12(5):1397–1410. Available from: http://www.ijicic.org/ijicic-120501.pdf
  6. Mukesh ZJ, Shinde AA. Absorbance Measurement of Dilute Chemical Solution. International Journal of Engineering and Advanced Technology (IJEAT). 2013;3(1). Available from: https://www.ijeat.org/wp-content/uploads/papers/v3i1/A2299103113.pdf
  7. Tavener JS, Thomas-Oates JE. Build Your Own Spectrophotometer. Education in Chemistry. 2007;p. 151–154. Available from: https://www.rsc.org/images/EiC-05_2007-spectrophotometer_tcm18-214788.pdf
  8. Lui SM. The Development of a Portable Spectrophotometer for Noncontact Color Measurement. IEEE Transactions on instrumentation and measurement. 2004;53(1):155–162. Available from: https://doi.org/10.1109/TIM.2003.822009
  9. Albert DR, Todt MA, Davis HF. A Low-Cost Quantitative Absorption Spectrophotometer. Journal of Chemical Education. 2012;89(11):1432–1435. Available from: https://dx.doi.org/10.1021/ed200829d
  10. Yulkifli, Wulandari DA, Ramli R, Etika SB, Imawan C. A simple colorimeter based on microcontrollers to detect food dyes. Journal of Physics: Conference Series. 2020;1528. Available from: https://dx.doi.org/10.1088/1742-6596/1528/1/012066
  11. Magro A, Silva M, Sousa G, Cardoso F, Guimarãe G, Muniz S, et al. Development of a Low-Cost Colorimeter-Like for Undergraduate Classes Using Microcontroller Board and RGB LED. Education Quimica. 2020;31(1). Available from: https://doi.org/10.22201/fq.18708404e.2020.1.68349
  12. Yulkifli, Kahar P, Ramli R, Etika SB, Imawan C. Development of color detector using colorimetry system with photodiode sensor for food dye determination application. Journal of Physics: Conference Series. 2019;1185. Available from: https://dx.doi.org/10.1088/1742-6596/1185/1/012031
  13. Laganovska K, Zolotarjovs A, Vázquez M, Donnell KM, Liepins J, Ben-Yoav H, et al. Portable low-cost open-source wireless spectrophotometer for fast and reliable measurements. HardwareX. 2020;7. Available from: https://dx.doi.org/10.1016/j.ohx.2020.e00108
  14. González-Morales D, Valencia A, Díaz-Nuñez A, Fuentes-Estrada M, López-Santos O, García-Beltrán O. Development of a Low-Cost UV-Vis Spectrophotometer and Its Application for the Detection of Mercuric Ions Assisted by Chemosensors. Sensors. 2020;20(3). Available from: https://dx.doi.org/10.3390/s20030906


© 2021 Jay Shree & Shinde.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)


Subscribe now for latest articles and news.