Jurnal Al Ulum LPPM Universitas Al Washliyah Medan

CORN SEED DRYER UTILISING HEATING ELEMENT AND COLOUR DETECTION WITH ESP32-CAM

Ahmad Rifandi, Indah Sulistiyowati, Akhmad Ahfas, Jamaaluddin Jamaaluddin — Tue, 29 Jul 2025 00:00:00 +0700

This study designed a corn grain dryer based on the ESP32-CAM microcontroller to enhance the efficiency of the post-harvest drying process. An expedited alternative to conventional drying that remains contingent upon weather conditions. The efficacy of the engineered apparatus was assessed via an experimental methodology. The apparatus for assessing the color of corn kernels comprises an ESP32-CAM camera, a heating element, and a K-type thermocouple sensor. The ESP32 microprocessor operates the system of this device. Experiments were performed by contrasting the drying outcomes with traditional methods. The gadget can desiccate corn kernels in 30 minutes to 2 hours for 0.5 kg, which is considerably more efficient than conventional methods. The automated mechanism maintains the optimal drying temperature range between 38 and 40°C. The method is deemed complete when the camera accurately identifies the color transition of the maize kernels from moist (yellow) to dry (golden). Due to its versatility for use at any moment.

RANCANG BANGUN SISTEM KUNCI MOBIL DAN MONITORING MENGGUNAKAN ESP8266

Wed, 30 Jul 2025 00:00:00 +0700

Optimal vehicle security is an important aspect in preventing theft and protecting vehicles. This research focuses on designing and developing an ESP8266-based car lock and monitoring system that can be controlled wirelessly. This system allows users to lock and unlock cars and monitor vehicle conditions through a mobile application or web interface. The ESP8266 module acts as the main controller connected to sensors to detect changes in key status and vehicle conditions. In addition, the system is designed to send real-time notifications to users if suspicious activity is detected. The test results show that this system can operate stably and responsively, thus providing an effective and accessible security solution for vehicle owners.

SISTEM MONITORING GAS DAN SUHU PADA BIOGAS DIGESTER UNTUK MENINGKATKAN KINERJA KOMPOR

Wed, 30 Jul 2025 00:00:00 +0700

This research aims to design an Internet of Things (IoT)-based monitoring system capable of monitoring the gas and temperature in a biogas digester to improve the operational efficiency of a biogas-fueled stove. The system utilizes a DS18B20 sensor to ensure the fermentation temperature remains optimal and an MQ-4 sensor to detect methane levels. The data collected by the sensors is processed using an ESP32 microcontroller and displayed directly through the Blynk application. This technology is designed to improve stove performance and biogas production and maximize its use as an environmentally friendly renewable energy. Test results show that the system is effective in monitoring parameter changes with a high degree of accuracy, enabling a more optimized fermentation process and efficient use of biogas. The system provides real-time information regarding digester condition and stove performance, thus supporting the improvement of biogas-based energy efficiency. In addition, this technology contributes to the development of sustainable solutions that benefit both households and the industrial sector.

RANCANG BANGUN PERALATAN PENGUSIR HAMA TIKUS DENGAN SISTEM KOMUNIKASI BERBASIS LoRA

Ghinnata Alsyah Arena, Arief Wisaksono, Indah Sulistyowati, Akhmad Ahfas — Wed, 30 Jul 2025 00:00:00 +0700

Pests plague farmers both during planting and after harvest. One of the pests that most often causes crops to fail during harvest time is rats. These pests usually attack communities of tens to thousands of people, causing a lot of losses. Since rat pests attack close to harvest, farmers usually drive rats out of the fields. This research method uses the R&D method. This research aims to assist farmers in repelling rat pests to get good quality rice. The test that will be used is a partial test. Where, partial tests that will be carried out on sensor parts are sensor movement tests, LoRa data transmission tests and LoRa distance measurement tests. The LoRa-based rat repellent system uses a combination of sensors and ultrasonic frequency transmitters to detect and repel rats. With LoRa (Long Range) technology, the system can send and receive data remotely with little power, which enables real-time monitoring and control of devices over a wireless network. Test results show that the system can function optimally under various environmental conditions, has a wide communication range, and responds quickly to pests. This shows that the integration of LoRa in the rat repellent system can improve pest control more efficiently and environmentally friendly than conventional methods.

PENGARUH SISTEM LAMPU LED DAN REFLEKTOR DENGAN MENGGUNAKAN METODE DEEP FLOW TECHNIQUE PADA TANAMAN KALE (Brassica Oleracea Var. Sabellica)

Lena Afrilia, Dafni Mawar Tarigan, Khairul Anuar, Munirah Mohamad — Wed, 30 Jul 2025 00:00:00 +0700

Kale (Brassica oleracea var. sabellica) is a high-value vegetable that requires adequate lighting to support photosynthesis, especially when cultivated using a hydroponic system. This study aimed to examine the effect of LED lighting and reflector use on kale growth using the Deep Flow Technique (DFT). The research was conducted in September 2024 at the Horticultural Research Center, MARDI Serdang, Malaysia, using a Completely Randomized Design (CRD) with three treatments: 4 lamps (4L), 4 lamps with reflector (4 LMR), and 5 lamps (5L), each repeated five times for a total of 1,000 plants. Observed parameters included plant height, number of leaves, chlorophyll content, and Leaf Area Index (LAI). The results showed that the 4 LMR treatment produced the best growth, with the highest number of leaves, the highest chlorophyll content, and good LAI values. The use of reflectors effectively increased light absorption efficiency and photosynthesis. In contrast, the 4L treatment showed the lowest growth due to poor lighting and nutrient deficiencies. Overall, the MARDI reflector proved effective in enhancing kale growth in a DFT hydroponic system.

PENGARUH PEMBERIAN PUPUK GUANO DAN PUPUK SP-36 TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BUNCIS (Phaseolus vulgaris L.)

Elli Afrida, Indah Aprilliya, Lisdayani Lisdayani — Wed, 30 Jul 2025 00:00:00 +0700

Bean plants are one of the groups of legumes that are popular with the public. In addition, beans are one of the sources of vegetable protein, vitamins A, B, and C found in their seeds. The demand for beans is increasing every year. Fertilization is an effort to increase the harvest of a plant cultivation. The use of organic fertilizers, both liquid and solid, can be a solution to reduce excessive application of inorganic fertilizers, because organic fertilizers can improve the physical, chemical, and biological properties of the soil. The purpose of this study was to determine the effect of giving Guano fertilizer and SP-36 fertilizer doses on the growth and yield of bean plants. This study used a Factorial Randomized Block Design with 2 factors: Factor l, namely Guano fertilizer (G) with 4 levels, namely: G0 = 0 g/plant (Control), G1 = 30 g/plant, G2 = 60 g/plant and G3 = 90 g/plant. Factor 2, namely the provision of SP36 (K) fertilizer with 4 levels, namely: K0 = Control (0 g/plant), K1 = 1.5 g/plant, K2 = 3 g/plant, K3 = 4.5 g/plant. The parameters observed in this study include plant height, number of branches, number of pods/plant and weight of pods/plant. The results of the study showed that the provision of Guano fertilizer had no significant effect on plant height, number of primary branches, number of pods and weight of pods. Guano fertilizer is a biological fertilizer that is given to add organic material to bean plants

EVALUASI DINAMIKA STRUKTUR PADA BALOK KANTILEVER FIX- FREE DENGAN MENGGUNAKAN ANALISA METODE ELEMEN HINGGA

Tony Siagian, Derlini Derlini, Misdawati Misdawati — Wed, 30 Jul 2025 00:00:00 +0700

This study aims to evaluate the characteristics of the dynamic load that occurs on the beam clamped at one end and the other end in a free condition. At one end of the rod a load is given so that it will cause a larger dynamic load on the rod. The method used to analyze the dynamics of this cantilever rod structure uses the Finite Element Method. The cantilever rod will be divided into four elements and has 10 nodal points, vibrating nodes are occured at node 3 until node 10. By using stiffness and mass matrix analysis, found that the largest deflection value is obtained at node 9 with a deflection value of 0.2555 m and the largest angular rotation occurs at node number 10, which is 0.0958 rad. By assuming the weight of the cantilever bar is ignored, the reaction at the clamped rod support is obtained equal to the magnitude of the load given at node 9 in the opposite direction to keep the rod prevent from falling, which is -100 N. The farer distance of nodal point from the end of the bar that is given the load then the smaller the deflection that occurs, including the angular rotation will also be smaller. The selection of beam materials, beam dimensions, beam installation methods and determination of the external load greatly determine the safety factor of the cantilever beam construction.

PEMANFAATAN BELALANG SEBAGAI SUMBER KITIN MELALUI PROSES EKSTRAKSI RAMAH LINGKUNGAN

Wed, 30 Jul 2025 00:00:00 +0700

This study aimed to extract chitin from rice grasshoppers using the Deep Eutectic Solvent (DES) method. The chitin extraction process involves several stages, namely delipidation, demineralization, and deproteination. In the demineralization and deproteination stages, two extraction methods were compared, namely the conventional method using strong acids and bases and the environmentally friendly method using Deep Eutectic Solvent (DES). The conventional method uses hydrochloric acid (HCl) for demineralization and sodium hydroxide (NaOH) for deproteination. DES is an effective solvent in dissolving proteins without damaging the chitin structure. This success was evidenced by test parameters of fat content from 30.91 to 9.01 with a DL percentage of 70.85%. In the ash content test, it was proven that the % ash content in pure grasshoppers was 4.87% and decreased in the demineralization process to 1.38% for the extraction stage using DES from 1.25 in the extraction process using the conventional method, this shows that the demineralization extraction process was successful in reducing mineral levels. In the protein content test, pure grasshoppers were 53.57% decreased in the deproteination process using DES to 1.11% and in the conventional method using NaOH, it decreased by 1.65%, this proves a decrease in protein content in the deproteination stage. In the chitin extraction process, an infrared spectrum analysis (FTIR) was also carried out on the extracted chitin samples.

STUDI PRODUKSI GARAM DENGAN METODE PLTS UNTUK PERBANDINGAN AIR LAUT DENGAN AIR TAMBAK

Wed, 30 Jul 2025 00:00:00 +0700

This research discusses the utilisation of Solar Power Plant (PLTS) in the salt production process by comparing the effectiveness of using seawater and pond water. The purpose of this study is to compare the process of making salt using pond water and seawater. The designed system includes automatic heating, temperature control, and automatic pumping system operated with energy from PLTS. The test was conducted for 1.5 hours with a measurement interval of 10 minutes. The results show that seawater produces more salt, namely 6 grams, compared to pond water which only produces 4 grams, with the volume of evaporated water ranging from 5-8 mL each. This difference indicates that the salt content in seawater is higher, making it more efficient for salt production. Although the solar PV system used is not yet fully optimised, this research shows the great potential of using renewable energy in the salt production process that is environmentally friendly and independent from conventional energy supplies.

PERBANDINGAN STATUS KESUBURAN TANAH DI DUA DATARAN TINGGI: STUDI KASUS DESA DOULU (BERASTAGI) DAN DESA NALELA (TOBA)

Wed, 30 Jul 2025 00:00:00 +0700

This study aims to disseminate the soil fertility status of two types of agricultural land, namely shallot cultivation land in Doulu Village, Berastagi District, Karo Regency, and rice field land in Nalela Village, Porsea District, Toba Samosir Regency, North Sumatra Province. The research methods used include field surveys, random soil sampling, and laboratory analysis of soil physical and chemical properties, including pH, cation exchange capacity (CEC), base saturation (KB), organic C content, nitrogen (N), phosphorus (P), potassium (K), and other nutrients such as calcium (Ca) and magnesium (Mg). The results showed that the analysis of shallot land in Doulu Village had a moderate to low level, due to acidic pH, low levels of organic matter, nitrogen, and phosphorus, and suboptimal cation exchange capacity. Meanwhile, rice fields in Nalela Village showed very acidic pH, low to very low quality CEC and organic C, and low phosphorus and potassium content. Based on the land suitability evaluation, agricultural land in both areas is categorized in class S2 (quite suitable) to S3 (marginally suitable), which indicates the need for land management intervention. This study recommends the application of balanced fertilization, addition of organic matter, improvement of soil pH, and erosion management to improve soil fertility status and support the sustainability of agricultural production in both villages.

RANCANG BANGUN ALAT MONITORING KEMIRINGAN PADA LANTAI BERBASIS GOOGLE SHEETS

Wed, 30 Jul 2025 00:00:00 +0700

Currently, the property sector—particularly residential housing—presents considerable business opportunities. A critical structural component of any residential building is the floor, which serves as the foundational surface for human activity such as walking, standing, and other daily operations. In some cases, floor surfaces may exhibit undetectable inclinations that could compromise structural integrity over time. To address this issue, the development of a technological system for detecting floor tilt is essential. This study proposes a real-time floor tilt monitoring system utilizing tilt and accelerometer sensors, integrated with Google Sheets for cloud-based data visualization and logging. Sensor data is transmitted automatically via an Internet of Things (IoT) platform, enabling continuous monitoring without manual intervention. The recorded data is organized and displayed in tabular form within Google Sheets to facilitate visual analysis and interpretation.The proposed system offers an efficient, scalable, and cost-effective solution for early detection of floor inclination and potential structural degradation. By providing real-time insights, it supports proactive building maintenance and enhances occupant safety by enabling timely responses to structural anomalies.

PENGARUH KONSENTRASI RAGI TERHADAP MUTU HEDONIK PRODUK KERIPIK TAPE UBI JALAR UNGU (Ipomoea batatas var. ayamurasaki)

Wed, 30 Jul 2025 00:00:00 +0700

Purple sweet potato (Ipomea batatas L.) is one type of food crop with high productivity and the main agricultural product in the Karo, Simalungun, Dairi and Toba regions. The utilization of purple sweet potato as a processed food commodity has not been maximized so that innovation in processing various agricultural products is needed. One of the processed food products from purple sweet potato raw materials is tape. The purpose of this study was to develop innovations in tape products into purple sweet potato tape chips that are liked by consumers. The organoleptic panelist activities of the product were carried out by students and also the community. This study used a Factorial Completely Randomized Design with one factor studied, namely: yeast concentration factor (K) consisting of 4 treatment levels K1 = 0.5% yeast, K2 = 1% yeast, K3 = 1.5% yeast, K4 = 2% yeast. The parameters observed in this study were focused on the panelists' acceptance in terms of hedonic organoleptics, namely taste hedonic, color hedonic, aroma hedonic, and texture hedonic. The results showed that the panelists generally gave very good scores and both factors influenced the hedonic organoleptic values ??of taste, color hedonic, aroma hedonic and texture hedonic.

RHEUMATIC HEART DISEASE SCREENING USING HANDHELD ECHOCARDIOGRAPHY: A STUDY AMON`G JUNIOR HIGH SCHOOL STUDENTS IN INDONESIA

Thu, 31 Jul 2025 00:00:00 +0700

Considering the high burden of morbidity and mortality associated with Rheumatic Heart Disease (RHD) in Indonesia, there is increasing interest in assessing cost-effective screening modalities, particularly the application of handheld echocardiography. Our study aimed to determine the prevalence of Rheumatic Heart Disease (RHD) in Batu Bara, North Sumatra, Indonesia. Our descriptive observational study was carried out in the Batu Bara region of North Sumatra in May 2025. The study population comprised junior high school students aged 10 to 15 years from a selected school in Batu Bara. Data collection included sociodemographic variables, parental characteristics, environmental and household factors, anthropometric measurements, physical examination findings, auscultation results, and echocardiographic evaluations. All data were analyzed using descriptive statistical methods. A total of 190 children were assessed in this study, with a median age of 13 years, and females comprised 54.7% of the participants. Echocardiographic screening detected Rheumatic Heart Disease (RHD) in three participants, corresponding to a prevalence of 1.6%. Within our study population, the prevalence of RHD was 1.6%. Expansion of echocardiographic screening programs is warranted to comprehensively establish RHD prevalence, accurately evaluate disease burden, and facilitate earlier detection to mitigate adverse clinical outcomes.

MONITORING PLTS BATTERY ENERGY STORAGE ON SALT PRODUCTION TOOLS

Thu, 31 Jul 2025 00:00:00 +0700

Indonesia, being on the equator, possesses significant solar energy potential with an average radiation intensity of 4.8 kWh/m² per day. This potential can be utilised for various sectors, including the salt production industry which requires a stable electricity supply. Solar Power Plant (PLTS) is a strategic alternative in increasing the efficiency of salt production, especially in the drying stage. This study aims to analyse the performance of the energy storage system in the solar power plant battery used in the salt production process. The research method involved measuring the voltage from the solar panel stored in the battery through three daily testing sessions. The test results showed that the highest voltage, 12.59 Volts, was reached in the morning and afternoon, while in the afternoon it decreased as the intensity of sunlight decreased. The results of this study show that solar power plants play an important role in maintaining a stable supply of electrical energy to support salt production. However, voltage fluctuations due to changes in sunlight intensity emphasise the importance of optimising the energy storage system. Therefore, the development of more efficient storage technologies is needed to increase the effectiveness of renewable energy-based salt production.