Implementasi Alat Rancang Bangun Pengomposan Ampas Kopi dan Teh Berbasis Sistem Kendali Otomatis
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Abstract
This study aims to design and implement an automatic organic waste processing device based on a microcontroller that is capable of independently performing drying and stirring processes without manual intervention. The developed system is equipped with a temperature sensor as a control feedback mechanism, a heating element as the heat source, a stirring motor to prevent material agglomeration, and an LCD module for monitoring process parameters. The device is designed to maintain the drying temperature within an optimal range in order to accelerate moisture evaporation while preventing the degradation of organic materials. System testing was conducted using a mixture of coffee grounds and tea waste without the addition of supporting materials or compost activators. The experimental results indicate that the system is able to maintain a stable drying temperature in the range of 55–65°C and perform periodic stirring effectively to prevent material clumping. This controlled drying process successfully reduced the moisture content of the material by up to 63%, resulting in a product that is more suitable for subsequent composting stages.
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