Today, many patients are treated in hospital or at home. It was determined that only 74% of the patients in 2014 Şişli Etfal Training and Research Hospital used probe bags. Probe bags are frequently used, very simple to use but also a critical bag. In cases where it is not emptied in time, it can cause infection in patients, and in case of explosion, it can sink around. The infections they cause seriously affect human life. For this reason, it was aimed to develop an Arduino microprocessor based system that would measure the bag's fullness and give a warning. With the help of flex sensors in the project, measurements will be taken from certain parts of the bag and the system will decide which of these is correct. Different warnings will be given at certain occupancy levels with the algorithm aimed to be created within the system. With this study, it was aimed to prevent various infectious diseases, to increase the quality of life of the patient and to reduce the burden on healthcare professionals. According to the results, the studies are promising.