scholarly journals Development of IoT Based and Wi-Fi Controlled Communication Robot by using Node MCU

This paper explains the Internet of Things (IoT) based Wi-fi controlled robot by using Node MCU for android applications. Some of the sensors such as temperature sensor, pressure sensor, humidity sensor, ultrasonic sensor is used to develop the smart application. The smart robot has been implemented and used with android mobile instead of a normal joystick method. The reaction time of the sensors is less than 0.03sec. The humidity sensor can be able to range upto10 to 45 degrees. The main aim of this application is to control the robot by an android application and can be controlled with a distance up-to 200mts. The rate of data will be refreshed in the database in every 30 seconds, which means the developed smart robot can work dynamically. These types of Robots are called Nonautonomous robots. This application has been developed by using Node MCU.

Author(s):  
Dani Sasmoko ◽  
Dzyo Bachtiar

Internet of Things (IoT) connects a global infrastructure in communities so they can take benefit of advanced services, by connecting objects (things) both physical and virtual with the Internet so that objects can communicate each other. The object of this study is a baby box to control the baby’s condition. When the baby cries too long it may cause Baby Distressed Tantrum which is the feeling of being depressed in the baby because they feel ignored. If this happens for a long time will endanger the baby's health as it is related to respiratory function and cardiac performance. The function of the baby box is to observe a baby when left without supervision. It will enable users to know if the baby is sleeping, awake or crying. Leaving a crying baby too long may have a negative effect. By applying the Internet of Things (IoT) in the design of an intelligent a baby box will help the parents and babysitter in controlling the baby if they have other activities to do. The baby box monitoring system has a dht11 temperature and humidity sensor, and a noise sensor to detect the baby crying. An esp8266 module on Wemos d1 will send data to an android smartphone and notify the user by sound or vibration.


2014 ◽  
Vol 543-547 ◽  
pp. 1099-1102 ◽  
Author(s):  
Zhi Qiang Yao ◽  
Heng Jun Zhu ◽  
Wen He Du

Aiming at the lagging for the monitoring of warehouse and lacking the intelligence, an automated warehouse monitoring system is designed using the internet of things, which may be used to monitor the temperature, humidity, and case of fire in the warehouse simultaneously. The temperature and humidity sensor SHT10 is implemented as the detector of the temperature and humidity, the flame sensor R2868 and the ionic smoke transducer HIS-07 are implemented as the detector of smoke and flame to find the fire. These data are sent to the computer in the manager center through Zigbee technology and the computer will process and analyze them. When the fire occurs, this system can extinguish the fire and call the manager or 119 automatically. The experiments have been performed, and it is shown that the performance of system is reliable, which has the practical value.


2019 ◽  
Vol 3 (2) ◽  
pp. 81
Author(s):  
Haidar Yusuf Al Hambra ◽  
Ovide Decroly Wisnu Ardhi ◽  
Fendi Aji Purnomo ◽  
Nanang Maulana Yoeseph

<p>Rumah merupakan salah satu kebutuhan dasar manusia setelah sandang dan pangan yang berfungsi sebagai tempat pelindung dan pengaman manusia dari pengaruh dan gangguan alam/cuaca maupun makhluk lain. Di saat jam-jam kerja dapat dipastikan bahwa pasti banyak rumah kosong ditinggal pergi penghuninya. Terlebih lagi untuk musim liburan, seperti perayaan hari raya dan tahun baru. Rumah kosong tersebut menjadi sasaran empuk para pencuri, terutama rumah tanpa sistem keamanan yang memadai. Metode penelitian ini menggunakan alat pengamanan rumah berbasis sensor dan <em>“Panic Button”</em> untuk memantau keadaan di rumah dengan bantuan aplikasi <em>android</em> yang sudah saling terhubung. Hasil penelitian telah berhasil dilakukan pembuatan aplikasi android dan alat pengamanan rumah yang menggunakan board NodeMCU ESP8266 sebagai pusat kontrol dan menerapan konsep <em>Internet of Things </em>(IoT). Alat dan aplikasi android telah diimplementasikan dan dapat berjalan dengan baik</p><p>_______________________________</p><p>Abstract</p><p><em>Home is one of the basic human needs after clothing and food which functions as a place of protection and human safety from the influence and disturbance of nature / weather and other creatures. During working hours, it can be ascertained that many residents will leave empty houses. What's more for the holiday season, such as celebrations for holidays and new years. This empty house is an easy target for thieves, especially houses without an adequate security system. This research method uses a sensor-based home security tool and "Panic Button" to monitor the situation at home with the help of an android application that is interconnected. The results of the study have been successfully made the making of android applications and home security tools that use the ESP8266 NodeMCU board as a control center and apply the Internet of Things (IoT) concept. Android tools and applications have been implemented and can run well</em></p>


The fourth industrial revolution represents smarter systems, faster and more optimized system of artificial intelligence, which involves control systems and sensors networks. In this paper, the concept of the Internet of Things (IoT) was applied preliminarily to create the connection between machine and the user, using a sensor, a processor such as Raspberry Pi, and IoT platform application such as Blynk in the smartphone. The simple IR 4.0 prototype system and IoT apps were developed in order to create a connection between sensors and user through the internet consisting of a temperature and humidity sensor, which is DHT11 and a Raspberry Pi 3 Model B. The smartphone application would be developed through the Blynk application for this simple prototype system. The graphical user interface GUI was built within the Blynk app and link it to the sensor which is already connected to the Raspberry Pi. The analysis that was done upon the system is by varying the stimuli to the sensors, which is a hairdryer with three levels of heat and observe the relative change of the reading of temperature and percentage of humidity on the apps. Therefore, the preliminary result shows an increase in temperature as the heat level increases. On the other hand, the percentage of humidity becomes lower as the temperature goes higher. Based on the results and the analysis, it had shown that the IR 4.0 prototype system of IoT monitoring can connect between the sensor and the smartphone application with real-time monitoring through the internet.


2017 ◽  
Vol 1 (3) ◽  
pp. 171-181
Author(s):  
Muhammad Izzuddin Mahali

Smart Door Locks System Based on Internet of Things Concept with Mobile Backend as s Service is the smart door locks development are supported by cloud computing technology as data storage. Methods of development that exist in this system is to combine technology (1) ESP8266 (2) Firebase and (3) Android Apps. Firebase is one of cloud-based services that are used to store data online. ESP8266 able to communicate with firebase well to process the read and write data directly using internet communication channels. Android application used to direct communication to the firebase for monitoring and  controlling simultaneously to the system. Android app can control / monitoring Indirectly to ESP8266 module via Firebase that serves as a mobile Backend as a Service to apply the rules of the Internet of Things


2020 ◽  
Vol 12 (1) ◽  
pp. 34-40
Author(s):  
Abi Sabila Mustaqim ◽  
Danny Kurnianto ◽  
Fikra Titan Syifa

Fire due to  Liquefied Petroleum Gas (LPG) gas leak is one of the disasters that still often occurs in the community. Community ignorance of safety standards in using LPG gas  is one reason. Fires can be prevented if at the time of the LPG gas leak can be detected earlier. Therefore we need a system that can monitor the condition of gas leaks and fires remotely. Internet of things (IoT) technology can be applied to this monitoring system so that information on LPG gas leaks and fires can be monitored remotely. The Internet of Things (IoT) based LPG and Fire leak monitoring system is a concept that utilizes internet connectivity between smartphone devices connected to sensor devices. The devices used to support this system include NodeMCU ESP8266 as a microcontroller and as a liaison to the internet, MQ-6 gas sensors and flame sensors as sensors for detecting gas and fire leaks, buzzers as alarms, and fans as neutralizing gas levels in the room. Data obtained by the sensor will be uploaded to the database via the internet and can be accessed through an android application. The results of the design show that the android application can display notifications when a gas leak or fire occurs. In testing the performance of data transmission, the results show that the highest data transmission delay is 64,61 seconds, and the lowest delay time is 61,56 seconds, the highest throughput value is 747,6 bits/second, and the lowest value is 285,4 bits/second.


2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Sofyan Radit Kurniawan ◽  
Syamsudduha Syahrorini

Abstract. Technology continues to develop from year to year which aims to simplify human work or automation of a system. The concept of measuring the water level is automatically applied to the river in front of the Tanggulangin tourism market, which aims to make it easier for residents to check the river water level in real time via the internet network. By utilizing the DS18B20 sensor to find out the temperature which has 97.85% accuracy and the HC-SR04 ultrasonic distance sensor which has 100% accuracy at a distance of less than 20 CM to find out the water level based on changes in the distance value on the sensor as an indication of the rise and fall of river water. From the sensor, the sensor is controlled with the Arduino UNO and NodeMCU microcontroller board to make the system work automatically, as well as the use of the MIT App Inventor to create android applications and to support the internet of things system. From the results of this research, it is obtained: (1). In the HC-SR04 ultrasound sensor test, the stability of the measurement value is very good, seen from the standard deviation value. (2). In testing the DS18B20 temperature sensor with a standard thermometer ratio has a difference of 0.7 ° C accuracy with an accuracy of 97.85% so that it can be used as a measurement tool. (3). On the TDS sensor, the standard deviation can be between 130-141 ppm which indicates this tool can function properly. (4). On the LCD, it can work properly and is ready to use in a system that functions to display information carried out by the microcontroller. (5). For pH sensors, this sensor can measure the degree of acidity / basicity of water between 1-10 pH.


Nowadays, the Internet of Things is becoming a reality more and more. Beside smart thermostats, light switches and power outlets controllable by smart phone apps creating smart homes, technology has solutions for daily encountered problems as well. We have identified two specific problems related to locking system and we proposed solution for the same. The one is vehicle and the second is mail box. Having a lock on a bike or mail box is not a guarantee that the vehicle or the documents won’t get stolen. The proposed work provides a convenient way of locking, providing reliable security system for the vehicle/mail box. The proposed system uses the IoT technology and smart phone to lock or unlock the device remotely through authentication. In particular, this work proposes security enhancement against any physical damage or theft. The proposed locker allows the user to lock and unlock easily and securely. Using user’s phone, the lock system can be locked/unlocked by entering a pass code in the Android application. One can also use the system using the registered touch patterns that can be entered through a touch sensor present in the lock. It provides intelligent lock/unlock with the location of your phone to the locker with the Bluetooth strength. It also provides theft alert to the user.


Smart Flowerpot was a plant pot that helped growers reduced care time and watering for the plants, because the plant pot offered by the researcher had a soil humidity sensor that measured the soil moisture and sent the soil moisture to the processor using NodeMCU ESP8266. If the humidity level of the soil was lowered to the specified value, NodeMCU sent a signal to the relay module, to allow the water pump to water the plants and there was an ultrasonic sensor module to measure the water level that was put in for watering the plants. If the water supply had almost run out, the NodeMCU would send a notification message to the Line Notify of the owner of the smart flowerpot to refill the water and, in addition, the smart flowerpot was equipped with an RGB LED Module to show the soil moisture status. If the LED was green, it meant high humidity, yellow was moderate humidity, red was low, and users could also use the mobile application to manage and display sensor values in order to let them know the status of the smart flowerpots. The researcher designed the Architecture of Smart Flowerpot by using the Internet of Things and brought it to five Information Technology and Computer Science experts to assess the suitability. Overall evaluation, the average 4.55 SD 0.63, was suitable at the highest level.


2019 ◽  
Vol 20 (1) ◽  
pp. 67-72
Author(s):  
Khairul Fikri ◽  
Umi Fadlillah

In this modern era, many people save valuable items in their house, such as assets (jewelry and money) and important files. Therefore, saving box is the right and effective choice for protecting important goods if robbery or fire occurs someday. This final project is designing a saving box using different system than the general. The design of this system consists of several parts such as Wemos, D1 R1 (ESP8266), telegram, temperature sensor (DS18B20), keypad, power supply, android, buzzer and LCD. In this design, users are able to access (open) the saving box easily, such as entering the code into the keypad and controlling the saving box through an Android-based smartphone with the internet of things method, therefore by this method users can enter the code in any range both far or near. Then if a safe box gets robbery, the system will send a message to user. Meanwhile if fire occurs, the temperature sensor will detect it and also send a message to user. This design is expected to fulfill user’s need of a safer saving box.


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