Doctors usually require patients' medical records before medical examinations. Nevertheless, obtaining such records may take time. Hence, Near Field Communication (NFC) could be used to store and send medical records between doctors and patients. Another issue is that there could be a threat such as, Man In The Middle Attack and eavesdropping, thus, a security method is required to secure the data. Furthermore, the information regarding the key and initialisation vector in NFC cannot be sent using one data package, hence, the data transmission should be done several times. Therefore, the initialisation vector that changed in each transmission is implemented, and the key utilised is based on the component agreed by both parties. This study aims at applying the cryptography process that does disturb and hinder the speed of data transmission. The result demonstrated that the data transmitted could be secured and the encryption process did not hinder data exchange. Also, different number of characters in plaintexts required different amount of time for encryption and decryption. It could be affected by the specifications of the devices used and the processes happening in the devices.

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Robot mobile otonom (autonomous mobile robot, AMR) banyak digunakan baik di industri maupun lingkungan rumah tangga. Robot jenis ini mempunyai kemampuan bergerak menuju tempat tertentu secara otomatis. Penggunaan GPS pada tempat tertutup dan area terbatas belum dapat memenuhi kebutuhan karena keterbatasan resolusi GPS. Pada penelitian ini dikembangkan robot mobile yang mampu menuju titik tertentu dengan memanfaatkan sensor rotary encoder dan metode odometry. Koordinat tujuan diberikan ke robot dan kemudian secara otomatis robot bergerak ke arah titik koordinat tujuan. Pengujian dilakukan dengan memberikan tujuan dengan jarak berbeda yaitu 60 cm, 100 cm, 150 cm, 200 cm, dan 250 cm. Rata-rata galat perhitungan odometry yang dihitung pada jarak tersebut adalah sebesar 0.5 cm, 2.63 cm, 1.65 cm, dan 1.1 cm. Pada pengukuran secara riil didapatkan galat sebesar 7cm, 13cm, 10cm, dan 20 cm. Pengujian rute langsung mempunyai nilai galat yang paling kecil dibanding pengujian rute 1 dan rute 2 yaitu 0,11 cm untuk tujuan x dan 0,25 cm untuk tujuan y. Pada pengukuran posisi riil mempunyai galat x = 3 cm dan y = 2 cm.

Mechatronics is a multidisciplinary that includes a combination of mechanics, electronics, control systems, and computer science. The main objective of mechatronics learning is to establish a comprehensive mindset in the development of mechatronic systems. Project Based Learning (PBL) is an appropriate method for use in the learning process of mechatronic. The use of PBL by following the V model in system development process is expected to encourage the achievement of the main goal of learning in mechatronics lab. Demonstration of knowledge during the practical work done by drafting product development procedures documents, presentations, and project demo. The test result of mechatronics lab course based on PBL in Electronics Engineering Bandung State Polytechnic led to the conclusion that the model is acceptable and desirable to be passed with a few improvements. In addition, learners also feel there is a new challenge in following the PBL-based practicum.