Ongate, N. “Prototype Design of Solar Soil Moisture Controller to Be Used As an Alternative Energy for Agriculture Against the Growth of Vegetables in Khao Kho District, Phetchabun Province”. Creative Science, vol. 13, no. 1, Dec. 2020, pp. 20-28, https://ph01.tci-thaijo.org/index.php/snru_journal/article/view/242652.