Internet of Things (IoT) is the nowadays hot technology that many researchers and technology developers working on. The IoT future is very much promising to be dominant in the next few years. IoT has basically two sides, publishers and subscribers. The publishers cannot do their job without having sensors to collect data from the surrounding environment. Thus, this course is designed to teach the process of building IoT sensors from scratch using Arduino platform. Beside the fun projects and examples given during this course, the participant will be introduced into learning how to build a subscriber dashboard on mobile phone. At the beginning of the course, the participant will be given the project kit (Mobile phone is not included) to work on during the course.