Scientific poster training with Canva aims to increase students knowledge and skills in making scientific posters as well as being a competition for participants in implementing their new skill. The method used is to form a training concept as well as a scientific poster competition involving the role of LEPPIM management and members as the committee. This training and competition activity was attended by 20 students online using the Zoom Meeting platform and the Google Form link as a means to collect works. The result of this training is increasing the knowledge and sportsmanship of the participants in competing to produce scientific poster works.
Hydroponic plants develop every time, and until now, many hydroponic plants are managed by the Indonesian people. The steps for producing hydroponic plants are seeding, transplanting, making hydroponic media, providing hydroponic nutrition, conditioning the water pH, and harvesting. One of the important steps to growing good plants is seeding. Therefore, a system connected to the IoT (IoT) is needed; this system acts as the main processor that can send data from sensors to users. This literature review aims to provide awareness about hydroponic plants and help farmers and the general public to more easily monitor hydroponic plants so that all people can easily do hydroponics at home using the IoT. The method used to compile this research is a literature study, searching for relevant scientific articles on the Google Scholar database using several keywords - seeding, hydroponics, IoT, and microcontrollers, with the year of publication 2016-2022. The IoT application for hydroponics provides many benefits, such as easy control for farmers from the sowing stage to irrigation. However, in the production process, the system requires appropriate parameters. The IoT-based hydroponic system facilitates seeding maintenance with the ESP8266 microcontroller, Arduino Uno microcontroller, DHT-22 sensor, PH-4502c, and TDS sensor.
Operasional Amplifier berfungsi untuk memperkuat tegangan searah ataupun bolak-balik. Fungsi Op-Amp dapat muncul dari dasar rangkaian umpan balik dengan jumlah besar umpan balik negatifnya, kinerja rangkaian tersebut ditentukan oleh komponen umpan baliknya. Penyusunan Op-Amp disusun dalam sebuah rangkaian yang terintegrasi atau biasa disebut dengan Integrated Circuit (IC). Ditulisnya analisis rangkaian komparator ini adalah untuk dapat mengetahui rangkaian komparator, menganalisis hasil rangkaian komparator pada simulasi Circuit Simulator Applet. Pada analisis ini terdapat dua metode yang digunakan yaitu pada komparator dan H-Bridge yang sama-sama menggunakan metode kuantitatif dengan tegangan yang dihubungkan dengan komponen yang satu dengan lainnya untuk saling terhubung dan menghasilkan suatu output yang diinginkan. Pada penelitian ini menghasilkan komparator membandingkan jika masukkan positifnya lebih besar dari masukkan negatif dengan keluaran yang dihasilkan antara 11,86 sampai 1,145 Volt, Pada rangkaian H-Bridge menghasilkan jika nilai V1 dan V2 berbeda DC motor yang ada pada H-Bridge akan berputar dengan menyesuaikan nilai Vin yang tertera.
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