Judul: Modifikasi Pengendali Traktor Otomatis dan Rancang Bangun Unit Pengendali Tuas Transmisi Maju - Mundur Menggunakan ATMega 128
Abstrak: Otomatisasi sistem pengendalian traktor atau yang biasa disebut otomasi traktor adalah pengendalian traktor yang semua kegiatan operator dikendalikan secara otomatis oleh sistem. Pengembangan otomasi traktor juga mencakup salah satu tujuan precision farming yaitu tepat lokasi. Smart Tractor merupakan salah satu pengembangan otomasi traktor. Untuk memperkecil radius putar yang besar saat berbelok traktor dilengkapi rem kanan-kiri yang dapat dikendalikan secara terpisah. Modifikasi pengedalian rem dan transmisi maju-mundur untuk meningkatkan kemampuan traktor untuk bergerak. Modifikasi rangkaian elektronika dilakukan pada ATMega 8535 yang memiliki 20 pin I/O menjadi ATMega 128. Modifikasi dan pengujian traktor mengikuti kaidah umum rancang bangun. Ketiga unit mekanisme yang dibuat digerakkan menggunakan motor listrik DC. Daya yang dibutuhkan oleh tuas transmisi, pedal rem kanan dan kiri adalah 31.6 Watt, 13.78 Watt, dan 12 Watt. Uji kinerja otomasi p
Keyword: ATMega 128, Otomasi, Traktor

Judul: Rancangbangun Sistem Pengendalian Tuas Pengendali Implemen untuk Otomatisasi Traktor.
Abstrak: Modern farming is indicated by the use of agricultural tools and machines that substitute human labor. In the process of land preparation, planting, plant preservation, and harvesting, the use of human labor has been reduced and replaced by agricultural machines. The objective of this research was to modify the implement control system for automatic land plowing. The design was using a sprocket-chain mechanism that was connected to the control lever, there after the lever could be moved in back and forward directions. The sprocket was rotated by a DC motor that was controlled by a micro controller passing through H-Bridge device, thereby the lever could be ascend and descend easily by changing the direction of DC motor’s rotation. A potentiometer had been used to measure the rotation angle as the output of the lever position. The scale change at the potentiometer was converted to a digital data by the micro controller and would be used as a feedback. At the field performance test, the prototype was tested to control the depth of a disk plow in a tillage operation using a 4-wheel tractor. The test result showed that, the control system could control the plowing depth in the average of 19 cm at the 350 ADC setting, and 13 cm at 450 ADC setting.
Keyword: design, implement, control, smart tractor

Judul: Daya Tahan IgY Spesifik Terhadap Influenza dan COVID-19 dalam Balsam Bibir
Abstrak: Influenza and SARS-CoV-2 virus are respiratory infections and require antiviral medications due to severe consequences. Utilization of specific immunoglobulin Y (IgY) inserted in personal care products were developed. The aim of this study was to evaluate durability of specific IgY against influenza and COVID-19 in lipbalm. The concentration of IgY used in this research was 0.1% and 0.25%. Three groups were observed: control (C) lipbalm without IgY, treatment 1 (T1) lipbalm with 0.1% IgY and treatment 2 (T2) lipbalm with 0.25% IgY. Organoleptic tests were conducted and recorded which includes the sense of smell, colour and consistency for six weeks. The presence of IgY in lipbalm was evaluated using enzyme-linked-immunosorbent-assay (ELISA) and neutralizationassay. There were some noticeable changes of organoleptic that can be observed such as colour darkened and texture hardened of the lipbalm. Most of the assays gave negative results in T1 and T2, whilst only few of them were doubtful. Our result indicated that IgY concentration of 0.1% or 0.25% in lipbalm were not optimal. However, the negative result might be due to the unavailability of IgY in the product to be dissolved in deionized water since we used beeswax as lipbalm component.
Keyword: Covid-19, egg yolk immunoglobulin Y, lipbalm, influenza