Small Rice Milling Machine for Using in Household Controlled by Arduino Uno R3

Abstract

Purposes of this research are to design and to build a small rice milling machine for using in the household that is controlled by Arduino Uno R3. This proposed machine is small size and easy to transport. It can be used for milling both white rice and brown rice. The performance test of this machine was tested by milling paddy rice and conducted the suitable speed of motor, electric power and time consumption for milling of seven species of rice namely Hommali 105, Pathumthani 1, KorKhor 31, KorKhor 41, KorKhor 57, KorKhor 61 and KorKhor 6 (sticky rice). It was found that the average percentages of brown rice and white rice of seven species of rice after milling are 74.95 % and 59.86 % respectively. The suitable average speed of the motor for milling brown rice and white rice is about 349.78 rpm and 2278.5 rpm respectively. The average electric power consumption for milling brown rice and white rice is about        143 W and 227 W respectively and the average time consumption for milling brown rice and white rice is about 9 minutes per 0.5 kilograms of paddy rice and 20 minutes per 0.5 kilograms of paddy rice respectively.