Waste is one of existing environmental problems have never end. One of the causes was a lack of environmental awareness because lack of education from early age. This study aimed to build Sorting Waste Game Android Based as an education media, study used technology in environmental education. Sorting Waste Game teach early childhood to understand many kinds of waste (organic and an organic) and adjusted waste based on garbage box on environmental. This game application used Android Platform which build using Unity 3D game engine. This study used Research and Development (RnD) method with Waterfall Development Model which consist of 4 steps, are analysis, design, implementation and testing. Testing method used is black box testing to test functional interface application systems thoroughly. Data collection is done using the survey that has been tested its feasibility by experts using Likert scale. Based on testing black box that has been carried out got that all indicator which is with such questions at each item was declared good with the percentage 100 %. This means that Sorting Waste Game is user friendly and can be used and runs smoothly on a platform android as a medium of technology on learning of environmental education.

One of the efforts to improve the quality of urban environment is smart environment concept that has become one of six of smart city indicators such as smart government, smart economy, smart people, smart mobility, and smart living. Smart environment means an environment that provides comfort, resources, physical and nonphysical beauty, and visual for the people, also students in their schools. This research aimed to apply the concept of smart trash bin in schools. This smart trash bin that detects rubbish based on rubbish group (plastic and metal). In addition, the smart trash bin has a function as education for the students as well. It has explanation about knowledge and how to use the trash bin so the students have awareness to keep environment clean and beauty. The research used Research and Development method from Borg and Gall model. The target of this research was the students in elementary school. The final result of this smart trash bin was a feasibility test product. There will be a test for the students using questionnaire. So that this smart trash bin is effective to improve the knowledge of students about rubbish.

.

The purpose of this research is to design and construct  a prototype of an Arduino-based automatic handsanitizer and mask feeder. The research method was carried out by laboratory experiments. The experimental stages consisted of designing hardware (hadware), software (software) and testing the whole tool. The test results showed that  ultrasonic sensor and dispencer can detect at a distance of 5 cm. The Arduino dc motor test that  given high and low logic for the direction of each clockwise and counter clockwise motor resulted in an output voltage of 5.09V. Overall the tool testing went well. Regarding to the results, it can be concluded that the tools can be on of the options to reduce the spread of COVID-19 in the Jakarta State University academic community, especially the laboratories within the Jakarta State University.  

The purpose of this study is to apply load cell sensors on gallon size detectors for Internet of Things-based refill depots that can fill water into gallons and record the number of gallons that have been filled into the database which then the records can be accessed through the internet in realtime. The results of this study showed that load cell sensors can be used to measure gallon size in IoT-based refill depot systems