Blynk Application Research Articles

Design of a smart hydroponics monitoring system using an ESP32 microcontroller and the Internet of Things

This paper presents the design and construction of a hydroponics monitoring system that can collect parameters of hydroponic systems, such as temperature, water limit, pH level, and nutrient levels. The monitoring system was developed using an ESP32 microcontroller and several sensors, including total dissolved solids (TDS), pH, water level, and temperature sensors. The ESP32 microcontroller gathers and processes data from the sensors to automatically activate the water or salt pump and drain the necessary materials into the hydroponic system's plant basin. The user can then view the hydroponic parameters through the Blynk application on a smartphone. The user can also activate the pumps for water, nutrients, or salt using the application's interface on a smartphone, or the ESP32 microcontroller can activate them automatically if the parameter values deviate from the required values. The monitoring hydroponics system and IoT interface were successfully built and implemented. The experiments were compiled, and the data gathered and discussed.•An ESP32 microcontroller with TDS, pH, water level, and temperature sensors was used to build the hydroponic monitoring system.•The ESP32 automatically collects and evaluates sensor data in order to drain water nutrients, or salt into the plant basin of the hydroponic system as necessary.•The user can also check the parameters of the hydroponic system and, if necessary, run the pumps for water, fertilizers, or salt using his smartphone through the Blynk IoT app.

Smart Home Remote Control System Prototype Using Internet of Things (IoT) Based ESP8266 Microcontroller

Technology is developing very rapidly in the current era, there will be several impacts that will result from the development of technology. Electronic equipment control can be done remotely in real time using the IoT system. The problem faced is the concern when leaving home. Because when leaving the house, homeowners sometimes often forget about electronic devices whether they are turned off or still on. IoT can be utilized at home as a smart home system by connecting an electronic device to an android application. This IoT-based smart home system uses an ESP8266 microcontroller which is used to connect between hardware and software that is controlled through the Blynk application. Blynk application is used as an interface that functions to provide input and produce output. This system consists of four sensors, namely the MQ2 sensor to detect gas leaks in the kitchen, the DHT11 sensor to determine the level of humidity and temperature in the bedroom, the PIR sensor to detect human movement at the front entrance, the ULTRASONIC sensor as a detector of the water level in the water reservoir and using three relays as a connector for lights and other electronic components. And using the Blynk application as a control system on the ESP8266 microcontroller.

Room Temperature and Humidity Control System Using Arduino and Blynk

The temperature and humidity of a room can be a problem that affects the comfort and health of its occupants. Issues such as excessively high or low temperatures and humidity levels can make it difficult for people to sleep and cause discomfort. Various solutions can be implemented, such as using IoT-based temperature and humidity monitoring systems, platform Blynk to optimize temperature and humidity control, and designing control circuits using actuators such as fans with relays. This control system uses the Blynk application to monitor and turn on and off the actuators in this study using a fan. Arduino Wemos D1 as the main processor, and for sensors, DHT22. Test method by placing the system in a room with an area of 3 x 3 m. The results of the test with the fastest average time were in the morning with a time of 10 minutes, 52 seconds. The longest average time was obtained during the day, with a test time of 14 minutes, 38 seconds. The difference in error between the system and the comparison is the highest at a temperature of 2.71% and at a humidity of 33.5%.

Monitoring and Control System Development on IoT-Based Aeroponic Growth of Pakcoy (Brassica rapa L.)


 
 
 
 One of the methods that can be used by Indonesian people in urban farming is the Aeroponic method of planting plants. The aeroponic method has a faster nutrient delivery speed than hydroponics and normal plant cultivation. The main objective of this study was to design an aeroponic monitoring and control system for Pakcoy (Brassica rapa. L) using the blynk application as an interface for remote control. The control system used is NodeMCU V3, DHT22 sensor, HC-SR04 ultrasonic sensor and TDS sensor. Plants in the system use a container box measuring 110 cm x 80 cm with 10 nozzles on the inside of the box attached to a ½ inch pipe, with 24 planting holes on the lid of the box with a spacing of 20 cm. The pump will automatically turn on when the temperature in the box is >25oC and will stop when the temperature is =24oC, or when the humidity is <80%. The results obtained during the 30 days of research showed that the average R2 value of the DHT22 sensor was 0.9864 and 0.9864, the HC-SR04 sensor was 0.996 and the TDS sensor was 0.9899. Observations on the growth of pakcoy plants obtained an average height of 13.3 cm for system plants and 13.4 cm for control plants. The average leaf width in system plants was 4.3 cm and 3.6 cm in control plants. the average number of leaves on system plants is 8 leaves and 9 leaves on control plants. The system plant weight was 5.493 gr and that of the control plant was 2.961 gr. The control system that has been made can work well and can be used in aeroponic cultivation of plants.
 
 
 

Designing an IoT-based footstep counter for sports shoes

Shoes are general footwear that can be used when exercising, working, formal events, or just to sweeten your appearance. Shoes used for sports have a slightly different shape from shoes in general, in terms of covering the left and right sides, the base, and the design, but most shoes do not have a device to count the steps taken. To overcome this, researchers have created a tool in shoes that can count the user's footsteps while exercising. A step counter on shoes based on the internet of things uses NodeMCU and an IR sensor which functions to detect every step of the shoe wearer. The result of the detected step count will be displayed in the blynk application. NodeMCU and IR sensors will be connected to the Blynk application using the internet network. When the step counter on the shoe and the hotspot are turned on, the results of the foot count will appear on the Blynk application on the smartphone. Footstep data detected by the IR sensor corresponds to the number of steps counted manually. The test results from a 150-meter step counter, obtained results of 207 steps in 3 minutes when walking casually, 223 steps in 1 minute 30 seconds when walking fast, and 264 steps when running in a period of 1 minute 15 seconds.

Internet of things with NodeMCU ESP8266 for MPX-5700AP sensor-based LPG pressure monitoring

The use of liquefied petroleum gas (LPG) cylinders as fuel has become a basic need for the community. LPG is more efficient than oil stoves, but LPG also poses a danger. The dangers contained in gas cylinders cause users to be afraid to check the availability of gas in cylinders because the checking process must be directly close to the gas cylinder. Because of this danger, users do not check gas availability, causing it to run out of gas when cooking. To solve this problem, a system is needed to detect the availability of LPG contents, which can be monitored remotely so that users will feel safe because they are not close to gas cylinders. The condition of gas cylinder availability can be remotely monitored using the internet of things (IoT) method. Therefore, an IoT-based LPG pressure monitoring tool was designed. A tool designed using the MPX-5700AP sensor is useful for detecting gas pressure values in LPG cylinders. IoT is used to monitor LPG pressure using the Blynk application. The buzzer module is a tool for sending sound signals as information on the condition of gas cylinders. The NodeMCU ESP8266 microcontroller processes and sends data to the Blynk application. System testing is carried out in three conditions: full, close to empty, and empty. The results of this test showed an error value of 3.41% and an accuracy rate of 96.59%.

Arduino based irrigation monitoring system using Node microcontroller unit and Blynk application

In the case of traditional irrigation systems, irrigation is done manually by the user. Since the water is irrigated directly into the land, plants undergo high stress from variations in soil moisture, and therefore plant appearance is reduced. The objective is for remote monitoring and controlling devices, which are controlled using a Wi-Fi module, and to optimize water consumption. The sensors collect and evaluate data regarding changing weather, soil moisture levels, and water levels before sending timely notifications to the user's phone and desktop. The system also contains a device application (Blynk) that runs on various devices and may be used to monitor plant conditions at the user's workplace. It constantly monitors the situation and notifies the user of any developments that necessitate urgent action. It combines the sensor devices, Node microcontroller unit (NodeMCU), and Arduino to work together to meet the system's objectives.

Prototype of Automatic Control System for Water Temperature and Acidity in Ornamental Fish Aquarium Based on Internet of Things (IOT)

The prototype application of an automatic control system in an Internet Of Things-based aquarium using DS18B20 and PH-4502C temperature sensors using the NodeMCU ESP 8266 microcontroller is a system that can regulate the temperature and pH of water automatically which is applied to a small aquarium. This technological advancement is very helpful for people who have busy daily lives who do not have time or cannot check the condition of the fish in their aquarium. To see the condition of ornamental fish aquarium can be checked from mobile phone through blynk application. Monitoring using the blynk application can be done anywhere as long as the device is always connected to the internet.

Pembangkit Listrik Tenaga Air (PLTA) Portable Berbasis IoT

Based on the increasing need for electricity for the community, especially in the Bangka Belitung region, which still uses a lot of expensive fossil energy (generators), so it is still a cost constraint for people living in remote areas that have not been electrified. So it is necessary to innovate in making electricity that utilises natural resources (water). However, the problem is that water sources in some places have erratic water discharge. Therefore, in this research it is proposed to make a portable hydropower plant so that it can be moved in a place that has a high water discharge that can monitor the rpm, voltage and current of the generator and battery and is expected to be used as a cheap and environmentally friendly alternative power plant. The methodology in making this hydropower plant uses a 100Watt DC generator with a 12-bladed breadshot turbine type and is controlled using LM393 sensors and INA219 sensors with a monitoring system using the Blynk application by utilising IoT-based technology. The test was conducted by testing the effect of generator rpm speed on generator current and voltage, battery charging and discharging time, and testing the monitoring system using the Blynk application. From the test results, it is obtained that the minimum generator rpm that must be achieved when charging the battery is 425 rpm with the power obtained of 12.19Watt. Charging a 50 Ah capacity battery at the hydropower plant takes 6 hour and 38 minutes with a charging current of 6,7A. While for battery discharge using a 12V 75Watt lamp load takes 7 hours 25 minutes. The generator monitoring system using the Blynk application works well in displaying the same measurement results on the LCD screen with an accuracy value of 100%.

Sistem Monitoring Pemakaian Energi Listrik Pada Kamar Kost Menggunakan Aplikasi Blynk Berbasis Internet of Things

Currently, the electrical energy monitoring system can only be monitored by PLN. Electricity users can usually only see the amount of usage each month without knowing electricity usage at any time. Excessive use of electricity will cause payments to increase. Therefore, this research was conducted to monitor the electrical power used in boarding houses via an internet connection using the blynk application. This study aims to determine the amount of electrical energy consumption every day. This lot-based monitoring tool uses the PZEM-004T sensor to read the amount of electrical energy consumption such as voltage, current, power and energy. As for the media interface that displays the amount of electrical energy consumption using the LCD and the Blynk application.

DESIGN OF FERTIGATION SYSTEM CONTROL IN GREEN HOUSE BASED ON INTERNET OF THING (IoT)

Abstract - Green house must be able to control the environment with temperature and humidity parameters that are suitable for plant growth. However, manual watering must always be done at any time, which is time-consuming for farmers. Greenhouses with modern technology create automatic controls such as plant sprinklers. Thus, the time spent on watering plants is less than the manual system. In addition, farmers can save water which has been wasted all this time because they do not know the condition of water requirements for plants. An automatic plant watering system with a DHT 22 sensor is used to control the greenhouse environment. With the development of the internet almost all over the world, giving changes to daily human activities. Internet of Things (IoT) technology allows objects to connect and communicate with each other. In this fertigation control device, IOT connects sensor devices and solenoid valves to be monitored via the internet network. IoT is built with the ESP8266 module which allows access via the internet. The hardware design uses a microcontroller as a control method. The data is then sent online to an open-source site that acts as a web server. The web server is used for controlling and monitoring data accessed via the internet. The conclusion of this tool is that the system can do watering automatically. The system can do watering automatically, greater than the humidity temperature of 30 and humidity of less than 90%. So that the condition of the plants can be maintained properly. The system can be controlled with a WIFI network through the Blynk application. Can display the status of humidity, temperature and humidity conditions on the LCD and the Blynk application. Can be controlled from anywhere and anytime.

Investigation on Water Quality for Farmed Aquatic Species by IoT Monitoring System

The objective of this research is to optimize fish growth in super-intensive aquaculture systems by addressing water quality issues. Changes in water parameters can significantly impact fish growth and even lead to mortality. To overcome this problem, real-time monitoring of water quality parameters is crucial, and the data should be automatically transmitted to the entrepreneur through the Internet of Things (IoT). This allows the owner to access real-time data remotely, eliminating the need to be physically present at the fish cage. By monitoring the data on a smartphone, the owner can efficiently manage the water quality. In this study, a water quality monitoring system utilizing temperature, pH, and ESP32, with the parameter values displayed on the Blynk platform was developed. The system successfully measures real-time water conditions and transmits the data to the Blynk application. The test results demonstrate the system's capability to receive and send data, but further analysis is needed to evaluate the accuracy and reliability of the measurements and identify any noteworthy findings.

An Analysis of Emission Exhaust Gas on 4-Stroke Engine Based on IOT Gas Analyzer

According to the Air Quality Live Index (AQLI), Indonesia's air quality has continued to deteriorate in the last two decades, so Indonesia is officially ranked 17th as the country with the worst air quality in the world. This is due to the population explosion in Indonesia causing industrial activity to also increase. The high levels of exhaust emissions in vehicles, of course, requires the need for technology to measure vehicle exhaust gases to reduce the impact of air pollution. However, the procurement of exhaust emission test equipment is still expensive, so only certain class workshops have this tool. In addition, the reading results of the vehicle's OBD (On Board Diagnostic) system are only able to display the condition or reading value of the Lambda sensor because other gas sensors readings such as CO2, HC, and CO cannot be displayed on the OBD reading results. The purpose of this study is to describe the design of the tool and the results of measuring CO and HC levels through the Blynk application. Research methods that use several gas sensors, such as MQ-7 and TGS-2602 (CO gas) and MQ-2 and TGS-2611 (HC gas), are then compared with the measurement results of a standard gas analyzer. The results showed that the MQ-7 value is close to the accuracy at 1000 rpm and 5000 rpm, namely 99.68% and 99.49%, while the level of accuracy at 3000 rpm is 99.37%. The TGS-2602 sensor at 1000 rpm only has the best accuracy and accuracy, namely 99.67% and 99.77%. The level of accuracy of the MQ-2 sensor has the best value at 1000 rpm rotation, which is 95.71% and the level of accuracy has the highest value at 7000 rpm rotation, which is 100%. For the level of accuracy of the TGS-2611 sensor, it has an accuracy level of 1000 rpm rotation of 94.65% and the level of accuracy of the sensor obtains very good values ​​at 1000 rpm, 7000 rpm, and 9000 rpm rotation of 100%.

Development of a Wireless Monitoring System to Monitor River Water Levels in Real Time

This wireless monitoring system is developed to alert and warn the resident regarding the upcoming flood. Due to the floods that occur every year, especially during the monsoon season, the loss and damage done by this disaster are uncontrollable. When the water level rise-up above the safe ground, it may hit the communication substation, as well as the power tower. In most cases, many residents are not alert with their surroundings because there is no alert system that can remind them regarding to the issues that will arise. By not preparing themselves for the upcoming nature disaster, it could endanger themselves and destroy their property. Thus, this project focus on monitoring a real-time river water level system for flood prediction purposes which utilize three devices connected together in a centralized system. By having this system, people will be notified about the current situation and the water level of the river near to them via Internet of Things (IoT) such as Blynk application. ESP32 and ESP32-Cam are used as the main microcontroller to control the system. The sensor used to detect the water level at the river is TF Mini Lidar and ultrasonic sensor for the water level detection of the rain gauge. The ESP32-cam are used to monitor the surrounding area at the river. The combination of these three systems is used to monitor and predict the flood occurrence.

Development of Pesticide Sprayer Robot Prototype for Chilli Farm Agricultural Application

Accidental spills of chemicals, leakages, poor spraying equipment,or a lack of knowledge about personal protection equipment usage can expose farm workers to pesticides either in open fields or greenhouse.Pesticides may affect their health, particularly on dermal contact and respiratory system. Besides that, traditional pest management for massive agriculture industry requires a big number of employees, large quantities of pesticides, and the risk of inefficient and uneven pesticides coating. Therefore, a pesticide spraying robot, which is equipped with two ultrasonic sensors is developed to spray pesticide independently and allows the workers to maximize pesticide usage on the agricultural application such as chilli farm. The prototype is designed to automatically moves and operate in two modes, either automatic or manual. For automatic mode, the robot travel and operated independently without human control or intervention. While for manual mode, the Blynk application is used to remotely control the robot’s movement and spraying insecticide. In this research, the garlic extract and dishwashing liquid detergent were used as organic insecticides since they are effective and safe for plants and the environment. The study discovered that for a 50 cm two-month chilli plant, a three-seconds pesticide setting was appropriate, with 30 ml pesticide applied per chilli plant.

SISTEM MONITORING KWH METER DIGITAL BERBASIS IOT PADA LABORATORIUM PERALATAN MEDIS

The educational process, which is supported by adequate laboratory facilities and infrastructure, will produce professional higher education tri-dharma outputs, both for students and lecturers. The Medical Equipment Laboratory is a place where experimental studies with various equipment and devices, analyses, and observations are carried out. The amount of electrical energy used by a university can be measured using an electric energy meter, namely the kWh meter, but the university cannot monitor which building or room uses the most electrical energy because it only knows the amount of power used each month. Given these problems, a digital kWh Meter monitoring tool based on the Internet of Things (IoT) is designed to measure the amount of current, voltage, power, and costs that must be incurred while using medical equipment and can then be monitored in real time using the Blynk application as the server. The implementation system for monitoring the kwh meter using the PZEM-004T sensor has a very good accuracy rate of 99.52% for measuring voltage and 99.87% for measuring current on medical equipment in the medical equipment laboratory at the PGRI Yogyakarta University. It was found that the greater the applied load value, the more the impact on data outputs such as current and voltage would affect the size of the monthly electricity bill. The monitoring system can be carried out within a radius of 20 meters as long as the smartphone is connected to a WiFi connection. Monitoring activities and electrical device control activities can be carried out.

Solar Panel Tracking Control Monitoring System

Solar energy is extraordinary and the largest energy on earth and no pollution. Solar cell technology is a technology that can absorb solar energy and convert in to electrical energy. In general, the installation of solar panels is only in one direction so that the absorption by the photovoltaic collector will not be optimal. Subsequence, the electricity produced is also less than optimal. To optimize the absorption of sunlight, the photovoltaic collector must be parallel to the sun. In this study, 4 LDR light sensors were used as detectors of the highest intensity of sunlight, the LDR output would enter the Arduino Mega microprocessor and control the DC motor to drive the solar panels. The monitoring process used a current/voltage sensor (INA219), temperature and humidity sensor (DHT 11), data from the sensor was processed by the ESP8266 Node MCU and then the data can be accessed via an Android Smartphone using the Blynk application. These data were transmitted to users wirelessly via the ESP8266 Node MCU module. From the test results, the energy generated when the solar cell was stationary averages V = 14.28 volts, I = 0.66 A and the energy when the solar cell moved averages V = 14.63 volts, I = 0.92 A. Therefore, the comparison of electric power in the condition that the solar panels moved according to the movement of the sun has increased by 30.13% compared to the stationary condition.

Penerapan Sistem ATS (Automatic Transfer Switch) sebagai Pengendalian, Pemantauan, dan Perawatan Berbasis IoT (Internet of Things)

The need for electricity is increasing along with population growth. The main electricity supply (PLN) is not always continuous in its distribution, so alternative power is needed, namely generators. The ATS (Automatic Transfer Switch) system can transfer the voltage source to the load. The ATS system is equipped with IOT in the form of a Blynk application on Android which functions as a controller and can send ATS damage notifications. This research was conducted to meet the electricity needs. Users can monitor, control and maintain the ATS system in the event of a breakdown. The method in this study uses a quantitative method, namely data collection by testing the ATS system and testing the IOT Blynk application function as a notification of damage to the ATS system. The result of transferring the PLN voltage to the generator is only 7 seconds and 3 seconds vice versa. There was damage to the lamp cable 1 time, the relay 1 time, and the fan cable 2 times. The results of measuring the current and voltage of the PLN source: lamp load 0.02A, 3.4V; fan 0.04A, 3.5V; AC motor 0.04A, 4V. Generator current and voltage measurements are as follows: lamp load 0.02 A, 9.1V; 0.03A, 9V fan; AC motor 0.05A, 4.5V.

Pembuatan Purwarupa Alat Ukur Konsentrasi CO2 Berbasis NodeMCU ESP8266

Carbon dioxide (CO2) is the largest contributor to greenhouse gas emissions, resulting in an increase in global temperatures. Unfortunately, this knowledge is not yet widely known among the general public. Therefore, providing information on daily CO2 levels can serve as a means to educate and raise awareness about the dangers associated with CO2 levels. To simplify access to CO2 concentration information, a prototype of a CO2 concentration measurement device based on the NodeMCU ESP8266 microcontroller, which can be connected to Wi-Fi, has been developed. To ensure data accuracy, the CO2 measurement device was calibrated using the NodeMCU ESP8266 microcontroller and data from an outdoor CO2 monitoring instrument at the BRIN (BPAA Pontianak) office, with an error value of 4.08%. The collected data from this device can be accessed through the Blynk application or a Google Sheets link. The test results demonstrate that the device can provide CO2 concentration levels with higher readings in areas characterized by high vehicle traffic, smoking, combustion activities, or a crowd of people.

Analisis Kinerja PLTS 200WP Secara Realtime Menggunakan IoT

Technological developments occur in various ways, for example wireless communication technology, computer networks and the internet, designing monitoring and control systems based on the Internet of Things (IoT). The application of the IoT concept has been widely carried out with various studies in various fields of life including analyzing solar panels in real time which can be done by utilizing the development of micro and wireless and internet-based control technology called IoT. The performance of a PLTS can be assessed by calculating the efficiency of the PLTS components themselves. The purpose of this study is to analyze the performance of a 200Wp PLTS from IoT-based Blynk application data. The methodology used in this study starts from 1) tool design; 2) tool making; 3) tool testing; 4) evaluation. From the results of the study it was found that the efficiency of solar panels was 11.35% The efficiency of SCC was 93%, the efficiency of Baerai was 94.8%, the efficiency of inverters was 92.6%, and the total efficiency of PLTS was 9.29% . The efficiency of this PLTS is considered low for a 200Wp PLTS