https://ph01.tci-thaijo.org/index.php/IJSIT <p>The scope of IJSIT is focused on Applied Science and Innovative Technology. Application areas Include: Applied Innovations, Agricultural and Biological Science, Engineering and Environmental Science, scientific engineering research &amp; technology, case studies, and innovation areas such as Electrical, Energy Efficiency, Smart Grid, Renewable Energy, Electronics and Computer Science and Engineering, Data Center Technology, Innovation Management, Information Technology, Mechanical, Industrial and Manufacturing Engineering, Automation and Mechatronics Engineering, Material and Chemical Innovation, Biotechnology and Bio Technology, Medical Informatics, Environmental Science and Engineering, Petroleum and Mining Technology, Marine and Agriculture Science and Engineering, Medical Informatics, Medical Healthcare, Medical Engineering, Educational Science, Technology and Innovation, Aerospace Engineering &amp; more relevant fields of Innovations .</p> The Association of Researcher of Thailand en-US International Journal of Science and Innovative Technology 2630-0532 https://ph01.tci-thaijo.org/index.php/IJSIT/article/view/266126 <p><span class="s24">This research aims to design and develop </span><span class="s24">a</span><span class="s24"> 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</span><span class="s24">.</span><span class="s24"> long, and 20 cm</span><span class="s24">.</span><span class="s24"> high, and a top measuring 31 cm</span><span class="s24">.</span><span class="s24"> wide and 40 cm</span><span class="s24">.</span><span class="s24"> long, with 6 mm</span><span class="s24">.</span><span class="s24"> 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.</span></p> Kedsara Palachai Saksri Kaensom Parichart Kaensom Natthawat Woranetsuttikul Thanyapob Sirimaskasem Promphak Boonraksa Copyright (c) 2026 International Journal of Science and Innovative Technology https://creativecommons.org/licenses/by-nc-nd/4.0 2026-03-22 2026-03-22 9 1 1 11