The need for practical equipment in the vocational high school (VHS) program is necessary. However, due to some difficulties such as the pricey of available training kit in the market caused that most student could not get appropriate practical work equipment. One of the important facilities is a training kit that encouraged the student to learn the Internet of Things. This study describes the design of the Internet of Thing Training Kit based on ESP-32 (IoTTK32). A set of IoT training module has been designed. Through research and development approach, the researcher has constructed a low-cost IoT trainer that can be used in industrial practical work. The results of the examination show that produced IoT kit could be used in formal practical work of industrial automation related to the industrial 4.0 evolution.
Internet of Things (IoT) is technology which provides communication between machines without human intervention.There are many applications that implement IoT technology e.g. smart power, smart home, transportation management, and smart city. This paper proposes the usage of IoT to develop electronic key that can help to improve the security in apartment. Electronic key uses Android smart phone to access and control the door. Electronic key uses Raspberry pii, motor DC, webcam, microswitch, and Arduino GSM. Raspberry is used to get command from server and instruct the Arduino GSM to open or close the door and webcam is used to take picture from the environment for documentation. This research uses three steps to verify the user who want to open or close the door i.e. using username and password, bluetooth, and QR code scanner.
3) ABSTRAK Proses flooding pada MANET merupakan suatu teknik pada fase route discovery yang digunakan oleh source node untuk mengirimkan route request packet (RREQ) pada node-node disekitarnya. Proses ini seringkali menimbulkan transmisi ulang yang tidak perlu dan menyebabkan congestion dan packet collision dimana fenomena ini dikenal dengan broadcast storm. Protokol AODV_EXT merupakan pengembangan dari protokol AODV yang menerapkan algoritma pengaturan RREQ forwarding pada intermediate node. Pada proses flooding tersebut maka RREQ packet akan diteruskan oleh intermediate node ke node-node selanjutnya apabila densitas node tetangga memenuhi batasan yang ditetapkan. Metode ini mengurangi terjadinya kemacetan jaringan akibat adanya transmisi ulang. Pergerakan node memiliki peran penting pada MANET. Mobilitas node sering menyebabkan perubahan pada topologi jaringan serta putusnya jalur yang menyebabkan proses route discovery perlu dilakukan kembali. Maka pada penelitian ini diusulkan suatu optimasi pemilihan rute pada jaringan MANET dengan mempertimbangkan link lifetime yang ada akibat pergerakan node. Algoritma Link Expiration Time (LET) digunakan untuk memperkirakan lamanya dua buah node untuk dapat saling berhubungan. LET dihitung berdasarkan jangkauan transmisi serta kecepatan relatif antara dua buah node. Routing protocol yang menggunakan nilai LET akan dapat menemukan rute yang paling stabil. Berdasarkan hal itu maka algoritma LET akan diterapkan pada protokol AODV_EXT dengan tujuan dapat meningkatkan performance pada protokol tersebut. Network Simulator 2 (NS2) digunakan untuk mengevaluasi modifikasi dari protokol AODV_EXT dengan menggunakan Link Expiration Time. Hasil penelitian menunjukkan bahwa protokol R-AODV_EXT memiliki kinerja yang lebih baik daripada AODV_EXT untuk parameter packet delivery ratio (PDR), throughput, number of packets dropped, dan average endto-end delay.
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