Reunkaw, Grisorn, Rawat Aoutamo, Wattanachai Srikrin, Pratch Piyawongwisal, Anuchon Homsiang, and Kwanchai Eurviriyanukul. 2021. “Development of PET Bottle Purchasing Machine Using Load Cell and Image Processing With LINE Notify”. RMUTL Engineering Journal 6 (2):49-55. https://doi.org/10.14456/rmutlengj.2021.11.