Innovative Development of a Dual-Mode Herbal Foot Spa Prototype with Temperature Regulation and Time Control

Abstract

This research aims to design and develop a herbal foot spa machine using local resources for the Khao Na Tat Community Enterprise Group, Village No. 12. The focus is on developing a temperature and operating time control system, as well as evaluating the performance of the developed prototype. The developed foot spa machine has two operating modes: Mode 1 operates at a temperature range of 36–38 degrees Celsius for 15 minutes, and Mode 2 allows setting a target temperature of 37 degrees Celsius for 15 minutes. The prototype's basin is designed for optimal use, with a base measuring 21 cm wide, 29 cm. long, and 20 cm. high, and a top measuring 31 cm. wide and 40 cm. long, with 6 mm. diameter hot and cold-water pipe connections for water circulation. Temperature control testing showed that Mode 1 achieved a maximum average temperature of 37.85 degrees Celsius and a minimum average temperature of 36.00 degrees Celsius, while Mode 2 achieved a maximum average temperature of 37.19 degrees Celsius and a minimum average temperature of 37.00 degrees Celsius. The results demonstrate that the developed foot spa machine maintains stable temperature control as designed and has the potential for practical application at the community level.