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Journal : Jurnal Instrumentasi

PROTOTIPE KONTROL BIOGAS PADA KOTORAN SAPI BERBASIS INTERNET OF THINGS (IoT) Ismangil, Agus; Adiguna, Gugun; Harsani, Prihastuti
Instrumentasi Vol 47, No 1 (2023)
Publisher : National Standardization Agency of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31153/instrumentasi.v47i1.302

Abstract

Biogas is a chemical compound with the formula NH3, ammonia, one of which can be produced by cow dung. Cow manure needs to be taken care of so it does not interfere with human health. For this reason, a manure reservoir is needed to anticipate the spread of ammonia gas produced by the cow manure. This study aims to control cow dung using the Internet of Things through ultrasonic sensors and gas levels. A biogas control prototype tool has been made using the MPX 5700 sensor to detect gas pressure, the MQ-137 sensor to detect gas levels, and the HC-SR04 ultrasonic sensor combined with an active buzzer alarm to detect the level of fullness during filling. This prototype data processing uses Arduino Uno and Node MCU esp8266 as a link to the internet network to make it easier to send data. Then, the results are displayed on the website and the LCD. The solenoid valve component opens the gas channel cover and sewage channel. The results obtained from the aquarium water level obtained an average value of 7.8%, and it reached 2.44% for gas pressure. The ultrasonic sensor can automatically measure cow dung's filling height in the shelter. Moreover, the MQ137 gas level sensor is able to detect more than 25 ppm of the standard limit for spreading ammonia gas levels in the air. Keywords: biogas, cow dung, biogas control prototype, internet of things.
ANDROID-BASED SPIN COATING MONITORING Ismangil, Agus; Nanang, Nanang
Instrumentasi Vol 47, No 2 (2023)
Publisher : National Standardization Agency of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31153/instrumentasi.v47i2.307

Abstract

The spin coating technique can produce very thin layers by utilizing centrifugal force,linear shear stress and uniform evaporation of the solution on a rotating disk or substrate.The thin layer produced by the spin coating method has a high level of homogeneity. Thedesired thickness and quality of the coating can be controlled based on the viscosity orviscosity of the solution, material content, time, and speed of rotation of the spin coater.The research method used to develop this research is the instrumentation research methodof the spin coating device which detects spin on the disc. This system uses an ESP32Microcontroller, Hall effect Magnet Sensor, Diodes, DC Motor, LCD 165x2 i2c, Mosfetand smartphone. The results obtained are that this Spin Coating tool can rotate with amaximum speed of 3000 rpm, and a minimum speed of 1000 rpm. Although there is stillnoise at certain speeds caused by the less stable data transmission process and lesssensitive response from the sensor, as a whole, the spin coating tool can rotate at a certainspeed by monitoring using android.