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Arafat, A.S., Yuliati, A. and Manova M, R.Y. 2023. Design of a Soil Nutrient Measuring Device for NPK (Nitrogen, Phosphorus, Potassium) Case Study of Cayenne Pepper Based on Arduino Nano V3 ATmega328P. ITEJ (Information Technology Engineering Journals). 8, 2 (Dec. 2023), 57 - 62. DOI:https://doi.org/10.24235/itej.v8i2.120.