This research paper aims to increase the efficiency of electric usage via IoT technology. An IoT Solar Lamp is a system that aims to use solar energy as the alternative green energy to reduce AC power line consumption from our national grid system (PLN). There has been some successful product such as this one (e.g. branded Sonoff switch), but it has not used Solar PV as the main source of green energy. Therefore this system is unique because it promotes green energy usage in household application. This remote controlled lamp has 2 pieces of solid-state relay that choose electricity supplies, either from the AC power line or from the battery. The battery will be charged by a 50Wp solar panel and this system uses NodeMCU-ESP8266 that has connectivity to the internet, such that the users can choose voltage supply source and turn the lamp on or off, with a smartphone. The result of this study shows that the system can be powered by 12Volt-18Ah battery for approximately 3 hours.
Automated or controlled wheelchair is becoming a common helping equipment for disable person and it comes vary in the term of technology usage and price. An electric wheelchair mainly used by people who has lack strength in using both hands to move the wheel freely when he/she was alone. In this research, we combined smartphone and an electric wheelchair for controlling its movement independently. An ultrasonic sensor was equipped for obstacle detection with 97% accuracy, however the price of the total system is approximately $200 ($1 = IDR15,000) which is comparable with the similar system in the market.
This paper will discuss the usage of Photo-Voltaic (PV) solar panel as one of the renewable energy sources. And the most important benefit of using a solar panel, is to lower our dependency with fossil fuel, and thereby reducing CO2 emission that has bigger impact to the earth global warming. We measured the efficiency of this Solar Home System (SHS) to about 75%. In which, we focus primarily to household appliance usage, to support electricity for a daily life. The result of this experiment has shown that the investment in solar panel has a Return Of Investment (ROI) of approximately 5 (five) years.
Everything that has been done within the scope of this research is aimed towards designing a device with a solar voltage source, that is capable of directly and automatically feeding a pet animal by adhering to the schedule and conditions pre-determined by the user. The design utilizes the ESP8266 Wi-Fi module as a controller that receives weight data about the pet’s food inside a container. The Arduino also controls a servo that opens the container based on the parameters set by the user via a Blynk app in a smartphone. This system includes a relay to switch from a wall socket adapter power supply to a battery connected to a solar panel. The obtained results satisfy the purpose of the research. The device was able to operate well using the utility grid and it can last for two hours solely on a 12 V 6Ah lead-acid battery. The device is 100 % accurate in adhering to the user’s schedule, responding with an average delay time of 1.4375 seconds between the Blynk application to the ESP8266 system.
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