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All Journal Jurnal Teknik dan Science (JTS) International Journal of Health, Engineering and Technology Uranus: Jurnal Ilmiah Teknik Elektro, Sains dan Informatika
Belinda Ayuningtyas
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Engineering Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary

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PERANGKAT EKSTRAKSI JAHE TERINTEGRASI BERBASIS ARDUINO UNO DENGAN PENGUJIAN METODE SPEKTROFOTOMETRI VISIBEL Sulistyo Widodo; Randy Rahmanto; Belinda Ayuningtyas
Jurnal Teknik dan Science Vol. 3 No. 2 (2024): Juni : Jurnal Teknik dan Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/jts.v3i2.1476

Abstract

The Automatic Ginger Extractor Based on Arduino Uno consists of three main units: the input unit, the processing unit, and the output unit. The input unit is equipped with Up, Down, and Ok buttons for navigation, as well as a phototransistor sensor that detects the presence of ginger samples (ginger simplicia) to be extracted. The processing unit uses an Arduino Uno microcontroller to process signals from the sensor and control the output unit. The output unit includes a motor driver, a power window motor for operating the grinder to crush the samples, a 12V DC motor for operating the stirrer to mix the samples with the solvent, an electric solenoid valve for dispensing the extract, and an LCD to display the process status. The working principle of this device is that when the phototransistor sensor detects a sample, the sensor signal activates the power window motor to grind the ginger. The user can then manually set the dissolution time using the navigation buttons. The longer the dissolution time, the better the extraction result. The final product is a liquid containing curcumin, which is measured using a curcumin content meter to determine its concentration. The device shows an error rate of 2.74% compared to manual methods. With this design, the Arduino Uno-based automatic ginger extractor offers a more efficient and consistent extraction process. The automation system allows for better control and optimal results with minimal manual intervention.
Analisa Sinyal Remote Control Untuk Aplikasi Pengendali Jarak Jauh Randy Rahmanto; Belinda Ayuningtyas; Sulistyo Widodo
Uranus: Jurnal Ilmiah Teknik Elektro, Sains dan Informatika Vol. 3 No. 1 (2025): Maret: Uranus: Jurnal Ilmiah Teknik Elektro, Sains dan Informatika
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/uranus.v3i1.659

Abstract

Indonesia's aerospace sector plays a crucial role in maintaining national sovereignty. However, the country's airspace is often infiltrated by irresponsible parties, necessitating an effective monitoring system. Unmanned radio-controlled helicopters are a potential solution, although they are limited in range. This study aims to design a long-range control system for radio-controlled helicopters using satellite phone communication, which offers wide coverage and can reach remote areas. The system comprises a remote control, a radio converter circuit, an audio mixer, and a satellite phone. The radio converter functions to transform the radio control signal frequency into its original frequency without a carrier frequency, which is then re-converted to be compatible with satellite phone input for signal transmission. Test results indicate that the system can transmit control signals with adequate frequency stability within the expected range. Despite minor oscillator instability at certain stages, the system overall operates as designed. In conclusion, this satellite phone-based control system effectively extends the operational range of radio-controlled helicopters and serves as a strategic solution for monitoring Indonesia's airspace.
Prototype Of An RFID-Based Door Lock System Using An ESP32 Microcontroller With Telegram Notifications Dimas Alvian Reza; Belinda Ayuningtyas
International Journal of Health Engineering and Technology Vol. 5 No. 2 (2026): Vol 5. No. 2 JULY 2026
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhet.v5i2.1050

Abstract

Door security is an important aspect of restricting access and protecting assets from unauthorized use. This study aims to design and develop a door lock prototype based on the ESP32 microcontroller by integrating an RFID RC522 module, a 4×4 matrix keypad, a 16×2 I2C LCD, an SG90 servo motor, LEDs, a buzzer, and a Telegram Bot for monitoring and remote control. The system implements RFID card and keypad password authentication, equipped with an automatic blocking feature after three consecutive incorrect password attempts and real-time notifications via Telegram. Testing results showed that the ESP32 Expansion Board received an input voltage of 12.28 VDC and successfully distributed operating voltages to all components, including 3.2 VDC for the RFID RC522, 5 VDC for the 16×2 I2C LCD and SG90 servo motor, and approximately 3 VDC for the LEDs. The RFID module was able to read cards at a maximum distance of 4 cm, while the servo motor successfully opened the door for 5 seconds through RFID and keypad authentication, and 3 seconds through Telegram commands. All components operated according to the design, demonstrating that the system can enhance door access security, support real-time activity monitoring, and provide a practical and reliable Internet of Things (IoT)-based door security solution.
Co-Authors Dimas Alvian Reza Randy Rahmanto Sulistyo Widodo