There are several methods that can be used to determine the packed red blood cell volume (PCV). Some are direct and others are indirect methods. Using a manual ruler to evaluate PCV is the easiest and most economical method that is commonly used as a direct method for determining PCV but with the potential for subjective errors and plasma entrapping. In our research, we designed and implemented an Arduino board-based electronic circuit for PCV evaluation. The new measurement device is compatible with red light emitters or diodes (006 nm RT) to take advantage of the reported absorption of this light by erythrocytes (red blood cells) compared to the lowest absorption of red light by blood plasma. The transmitted light is then received by the photocell the photocell signal is processed by the Arduino board. The difference in light intensity between the incident light and the transmitted light after it passes through the blood sample that was taken Ejection from the center makes the PCV assessment method reliable.71 The diodes and photocells included in this device make the process of determining the volume of red blood cells to the total blood volume easier and more accurate. Finally, it uses a programmable Arduino board2560MB (with specific mathematical equations stored in Arduino memory) to calculate and check PCV and HB (hemoglobin) values, it makes reliable PCV blood analysis a simple process.