A Low-Cost 3-D Printed Smartphone Add-on Spectrometer for Diagnosis of Crop Diseases in Field

Godliver Owomugisha*, Pius K. B. Mugagga, Friedrich Melchert, Ernest Mwebaze, John A. Quinn, Michael Biehl

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)
33 Downloads (Pure)


We present our initial proof of concept study towards the development of a low-cost 3-D printed smartphone add-on spectrometer. The study aimed at developing a cheap technology (less than 5 USD) to be used for detection of crop diseases in the field using spectrometry. Previously, we experimented with the problem of disease diagnosis using an off-the-shelf and expensive spectrometer (approximately 1000 USD). However, in real world practice, this off-the-shelf device can not be used by typical users (smallholder farmers). Therefore, the study presents a tool that is cheap and user friendly. We present preliminary results and identify requirements for a future version aiming at an accurate diagnostic technology to be used in the field before disease symptoms are visibly seen by the naked eye. Evaluation shows performance of the tool is better than random however below performance of an industry grade spectrometer.

Original languageEnglish
Title of host publicationProceedings of the 3rd ACM SIGCAS Conference on Computing and Sustainable Societies
Place of PublicationNew York, NY, USA
PublisherAssociation for Computing Machinery
Number of pages2
ISBN (Print)9781450371292
Publication statusPublished - Jun-2020
EventCOMPASS '20: The 3rd ACM SIGCAS Conference on Computing and Sustainable Societies - New York, United States
Duration: 1-Jun-20201-Jun-2020


ConferenceCOMPASS '20
Country/TerritoryUnited States
CityNew York


  • Spectrometery
  • Smartphone
  • Low-cost
  • Diagnosis
  • Crop disease
  • 3-D printed

Cite this