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Liquid Fertilizer Solution Stirring Tool Using Arduino Uno Microcontroller Muhammadin Hamid; Aritonang, Endah Sharon; Cholillah, Putri; Afdila, Ryandika; Wijoyo, Hadi
Journal of Technomaterial Physics Vol. 7 No. 1 (2025): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v7i1.19854

Abstract

Automatic fertilizer mixing is required to minimize fertilizer and water mixing time because manual liquid mixing takes a long time. The fertilizer used is liquid, often known as effective microorganisms 4 (EM4) solution. To perfect the stirrer, which is still rotated manually, the DC motor provides speed control for the automatic liquid fertilizer mixer. The speed can be reduced by utilizing the Arduino Uno microcontroller so that the motor rotates according to the required speed. The main mechanical components consist of a DC motor, Arduino Uno as a microcontroller, a power supply as a source of electric current, and a container for mixing liquid fertilizer. The infrared (IR) sensor achieved high accuracy in measuring mixer rotational speed for EM4 fertilizer, with percentage errors ranging from 0.2% to 1.8% compared to tachometer readings. However, when applied to green fertilizer, the error rates varied widely, from 0.03% up to 28.05%, indicating significant fluctuations. These results highlight that the IR sensor is quantitatively reliable for EM4 fertilizer applications but requires further calibration to ensure consistent performance with other fertilizer types
The Impact of River Water Quality on Women's Health in Blankahan Village: Physico-Chemical Analysis and Social Health Analysis Muhammadin Hamid; Nursal; Agus Nurbillah; Aulia Anggriani Lubis; Ayu Wahyuni Batubara; Eva Purwanti; Nazwa Armi; Hadi Wijoyo
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 10 No. 1 (2025): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v10i1.19867

Abstract

River water plays an important role in human life. Along with the increasing population and waste problems generated from human activities, climate change is a factor that also affects river water quality. Blankahan Village is located in Langakat District, with 3 interconnected rivers, Palma River, Pekan Kuala, and Dosi Valley. This program examines the impact of river water quality on public health in Blankahan Village, with a focus on physico-chemical and social health analysis to support the achievement of SDGs points 3 and 6. It was found to be in a fairly poor and murky condition according to the classification according to Government Regulation Number 22 of 2021. Furthermore, based on statistical tests and One Way ANOVA Tests indicated that there was no statistically significant difference in the mean perception among the age groups. Some indicated women's health problems due to river water use such as dermatitis, skin diseases, and diarrhea continue to increase. River water sources are still used by some communities to fulfill household needs during the dry season despite many negative perceptions that river water quality is poor, dirty and polluted with waste. River water quality is influenced by seasonal factors and pollution, namely the difference in river water quality during the rainy and dry seasons, and is also caused by domestic waste, livestock waste, and industrial waste entering the water.