B lood

Blood Bag Shaker is a equipment that functions to consider the blood that include the bag and shake the blood bag automatically in the blood donation activity. Shaking the blood bag to mix blood and anticoagulants to prevent blood coagulate. In this study a equipment was designed to facilitate the PMI staff's work process in shaking blood bags so that the time spent was more effective and efficient. The device designed in this study was compiled by the Atmega328 microcontroller by using a load cell sensor to consider the amount of blood that include the bag whose value is converted to milliliters. Servo motors are used to shake blood bags placed on the device and in this device the motor speed selection is provided. In the results of this study, several measurements were carried out, one of them for the measurement of voltage on the motor obtained an average of 4.86 Volts. For the weight measurement results obtained percentage of measurements on the sample using soy sauce by 0.23% at 100ml weight, while for the largest percentage of error using soy sauce samples obtained at 3.08% at 50ml weight. The average error results in weight measurements using soy sauce samples at 1.76%.