UTILIZATION OF BLUETOOTH CONNECTIONS FOR ARDUINO BASED DOOR LOCK SECURITY TOOLS

Home security is something that must be considered for every homeowner. Especially when you have to leave the house empty for work or even on vacation. You must be worried about thieves, lost jewelry, or the safety of other valuables. Therefore, the authors made a door lock security device by utilizing a Bluetooth connection with the Arduino Uno microcontroller. The research method used was direct observation of the selected object, namely the author's house, and conducting literature studies related to the Arduino Uno microcontroller. This door lock tool uses the Arduino Uno as a data processing center, because it is easy to use, and most importantly in the charging program, it does not require a download like a microcontroller in general. This Arduino Uno contains a special program that will give commands to the Servo Motor to open and open the door. Not only opening and opening doors, but this tool can also move the door without us holding or touching it but through a Smartphone. The purpose of this research is to produce a tool that can make it easier to manage or open doors using the Arduino via an Android smartphone using a Bluetooth connection.

Perception and Behavioral Changes of Thai Youths Towards the Plastic Bag Charging Program

Thailand has one of the highest usage of plastic bags globally, with over 45,000 million plastic carrier bags used annually. Because of its high plastic consumption and mismanagement of plastic waste, Thailand was ranked sixth globally in terms of its contribution to marine plastic pollution in 2015. While many countries have introduced plastic bag charges or taxes to reduce consumption, the Thai government is reluctant to do likewise due to political concerns about whether the public will accept this. This study presents findings on perception and acceptance level of university students towards plastic bag charging program in their campuses. We investigated the factors influencing intention and behavior and changes in students’ attitude from 2017–2019. Results show that students’ reusable/cloth bags use behavior and charge acceptance have increased over time. Testing is based on the Theory of Planned Behavior. We find that the factor which most influences consumers’ intention is perceived behavior control, which itself is determined by waste impact knowledge level and the perceived convenience of carrying reusable bag. In addition, the finding show that charging schemes are effective in breaking the habit of using plastic which will lead to a sustained change in behavior. Hence, policymakers should move implement plastic bag charging regulations in Thailand.

An IoT-Based Ship Berthing Method Using a Set of Ultrasonic Sensors

It is indisputable that a great deal of brand new technologies such as the internet of things, (IoT) big data, and cloud computing are conquering every aspect of our life. So, in the branch of marine technology, the mentioned technologies are also being applied to obtain more features and to automate marine-related operations as well as creating novel smart devices. As a result of this, traditional ports and ships are being replaced by smart ports and vessels. To achieve this transition, numerous applications need to be developed to make them smart. The purpose of this paper is to present a dedicated an IoT-based system for automating linkage procedures by searching for available locations via port-mounted sensors and planned ship notification. In the experimental system, we have used smartphone as an alternative to the client-side vessel of the system and created an Android app called “Smart Ship Berthing” instead of the charging program, for instance, NORIVIS 4, VDASH, ODYSSEY, etc. To test our proposed server-side system, we used Raspberry Pi with a combination of an ultrasonic sensor to detect the ship and modify the empty berth for anchoring. The experimental results show that the set of UR sensors have high accuracy to detect ships at the port for ship berthing and our proposed system is very amenable to implementation in the real marine environment.

Free Charging: Exploratory Study of Its Impact on Electric Vehicle Sales and Energy

This paper explores the feasibility of further research into providing free public charging services. Charging behavior research has noted some increased usage of free charging facilities, but inferential analysis has not studied whether this increased usage is a result of decreased price solely or free is a special price. Recent research in other fields, such as behavioral economics and marketing, has analyzed whether people’s decision process varies between when a product’s price is “free” and when it has a positive price. Laboratory and field experiments have found that people treat zero as a special price and obtain additional benefit from purchasing a free product or obtaining a free product in a bundle. Because of a lack of data and study in the electric vehicle area, evaluating the effectiveness of free charging programs is currently difficult. This paper explores potential impacts of free charging on plug-in electric vehicle adoption by integrating empirical findings in marketing research with consumer choice modeling. A behavioral framework is proposed to represent the perceived benefit from free charging events. The Market Acceptance of Advanced Automotive Technologies (MA3T) model was modified to incorporate a value of free from free charging events. Results show that a short-term free public charging program could possibly increase plug-in electric vehicle sales, decrease oil consumption, and decrease greenhouse gas emissions at an efficient cost–benefit rate. This exploratory work motivates further study and the paper concludes with a discussion of research programs that could be used to determine a valuation for free charging.