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ARAFAT, A. S.; YULIATI, A.; MANOVA M, R. Y. 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), v. 8, n. 2, p. 57 - 62, 12 dez. 2023.