Baby scales is device used to measure the infant's weight. The baby's weight is used as a measure anthropometric that be indication of the health of babies. Baby scales that commonly used in hospitals or posyandu still use analog scales so that the results less accurate measurements caused by human error during the reading and sensor sensitivity weight that used. In previous research has also made digital baby scales module based microcontroller AT89S5, but still uses a potentiometer sensor and power supply as the supply of device. The baby scales that author made use loadcell censor as a weight censors, used LCD as display, microcontroller ATMega8535 as processor, and power bank as supply of module. So it is expected can result a high accurate measurement from recitation or measuring. Data collection was performed by measuring the weight of weights that have been calibrated for 30 times the experiment at any point in the cross-section of each weight in increments of 1 Kg. Based on the measurement and calculation of data , error obtained by 0,42 % so that these modules can be used as a measuring tool weight of the baby