A Ventilator is designed to mechanically move air in and out of the lungs to intermittently or continuously assist or control pulmonary ventilation. It can also be used to control human body oxygen levels, for example during surgery where blood loss can result in hypoxia or lack of sufficient oxygen in the patient's body, it is best to have less human interaction. Sensors & Microcontroller: The most common indicators of the ventilation are the absolute volume and changes of volume of the gas space in the lungs achieved during a few breathing activities. It requires a set of sensors for pressure, volume and flow. The sensor information modulates the operations of the microcontroller. Based on the sensor information the MCU controls the motor system of the ventilator pumps