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Smart Household Biodigester Based on the Internet of Things Wins 1st Place in the 2022 Technocorner Competition

Team Carbon Sunny Go from IPB University students won 1st place in the 2022 Technocorner Competition held by Gadjah Mada University, Yogyakarta. This team carries a renewable energy sub-theme entitled “Smart Household Biodigester: Smart Biogas Production System from Prayer Waste in Bali and Integrated Internet of Things-Based Carbon Credit Trading”.

The team consisted of I Dewa Gede Wicaksana Prabaswara, a student at the School of Veterinary Medicine and Biomedical Sciences (SVMBS) and Putu Oki Wiradita Aryawan, a student of Mechanical and Biosystem Engineering (TMB) IPB University. This team was supervised by drh Mokhamad Fakhrul Ulum, MSi, PhD, lecturer at the Clinic, Reproduction, and Pathology SVMBS IPB University.

The Internet of Things (IoT) Development Competition aims to produce applicable innovations and provide solutions for solving problems. In this competition, each participant group consists of a maximum of three people where one person becomes the team leader.

“I am very happy to be able to bring the name SKHB IPB University to a national event. During the competition process, I was accompanied by a very cooperative partner, namely Putu Oki from TMB 58. We were guided by Dok Ulum, a lecturer who is not only a supervisor, but also a “friend” who is very understanding and makes every discussion comfortable,” said Dewa.

Innovation begins with the problem of the rising trend of greenhouse gas emissions which damages the ozone layer and increases global warming. Carbon offsets as an effort to reduce greenhouse gas emissions must be intensified. One of them is by developing renewable energy which has the potential to be carried out in Indonesia.

The province of Bali has many temples, sacred houses of the Hindu religion, which produce a lot of organic waste. Organic waste from the results of Hindu prayer activities is a separate problem. Dewa Wicak and Putu Oki saw this problem and tried to provide a solution using an IoT-based device.

This innovation consists of two parts, namely the gas monitoring system in the biodigester, and the smolder.id website which is prepared to become a carbon credit trading and investment platform. Monitoring sensor probes are placed in the biogas channel to monitor several types of gas produced, namely methane gas using the MQ4 sensor, hydrogen gas using the MQ8 sensor, and carbon dioxide gas using the MQ135 sensor. Other bioparameters that affect the biogas production process, such as temperature, humidity and pressure are monitored using the BME 280 sensor.

Data from these sensors is processed using Arduino nano and displayed locally on a 16 x 2 pixel LCD. The data is presented in units of ppm or parts per million for gas, Celsius for temperature, percent for humidity, and Pascals for pressure. The data is then uploaded to the cloud server base and can be accessed by partners and customers on the smolder.id website.

“Find your own passion, whatever the field. Find the motivation to achieve, no matter how small the motivation is. Then look for partners who share the same passion and commitment. And rest assured that you will achieve success,” said Dewa Wicak, motivating his fellow students to work. (n/km)