Innovative IoT and Solar-Powered Herb Drying Cabinet with Temperature Control for Production of Community Identity Products of Nongsano Sub-district, Laokhwan District, Kanchanaburi Province

Abstract

This research aimed to: (1) develop Innovative IoT and Solar-Powered Herb Drying Cabinet with Temperature Control for Production of Community Identity Products of Nongsano Sub-district, Laokhwan; (2) test the efficiency of the developed innovation; and (3) study the outcomes of knowledge transfer regarding the use of this solar-powered, IoT-controlled herbal drying cabinet in producing three high-value herbal products: Nong Sano flower tea, Nong Sano flower and citronella scented lotion, and Nong Sano flower facial sunscreen. The research tools included: 1) IoT equipment, comprising NodeMCU ESP8266, DHT sensor, LDR sensor, Relay (for 12V DC), three DC cooling fans, two 75W heating lamps, Sonoff TH Elite for monitoring internal cabinet temperature, a 200W solar panel, a 12/24V PWM 30A charge controller, a 12V 100Ah battery, a 3000W 12V to 200-220V inverter, and a 30A breaker. 2) An innovation efficiency test. 3) An evaluation form for the knowledge transfer outcomes, assessing trainees' satisfaction and the practical application of the innovation after knowledge dissemination. The sample group consisted of 150 teachers and students from Baan Nong Sano School. The research findings revealed that the developed innovation was highly efficient (X= 4.50, SD=0.50). The outcomes after knowledge transfer to the sample group showed highest satisfaction (X= 4.40, SD=0.46). Students were able to further their knowledge and continuously use the innovation to process herbs and develop three products. This allowed them to generate income for the school to fund various student activities.