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Arduino Electrical Engineering Electronics Microcontroller Mobile App Development
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$30 USD / heure
$30 USD / heure
Il est actuellement 9:31 PM ici
Membre depuis le février 10, 2021
6 Recommandations

Md. Masrur S.


5,0 (31 commentaires)
$30 USD / heure
$30 USD / heure
100 %
Travaux complétés
100 %
Suivant le budget
97 %
Dans les temps
30 %
Taux de réembauche

Embedded System and Software Engineer

I'm a Computer Science and Engineering student at the Rajshahi University of Engineering & Technology (RUET). Furthermore, I am a competitive programmer and a freelancer. Working with Arduino and embedded systems is something I'm passionate about. A mechanical ventilator project launched my career in this industry. Following that, I worked on several Arduino, ESP8266, and ESP32 projects. I've worked with Arduino-based systems for two years. I have completed a number of megaprojects, including an automatic Ambu bag-based medical ventilator, a bee-hive monitoring and controlling system, a CPAP-BiPAP ventilator, an environmental pollution monitoring system, an IoT-based soil moisture monitoring and controlling system, and an IoT-based dog tracking system, to name a few. Apart from that, I can create Android and Web applications. I've previously worked on Android apps like Bluetooth-based ventilator monitoring and control, BLE-based distance measurement systems, WiFi-based home automation apps, and web apps like IoT-based dog tracker projects, among plenty of others. I've worked with Android apps using Java and Flutter before. I'm currently working on machine learning with TensorFlow.
Freelancer Arduino Engineers Bangladesh

Contactez Md. Masrur S. concernant votre emploi

Connectez-vous pour discuter des détails via la messagerie.

Éléments du portfolio

This is an ESP-01-based IoT dog tracker project. This tracker keeps an eye on the dog with a neo-6m GPS module and a sim800l module. The module sends GPS coordinates to the server, and the server creates the map pointer from the coordinates using the Google Maps API.
IoT based dog tracker
This Android app searches for specific Bluetooth Low Energy (BLE) devices and calculates their distance from their RSSI values. According to the closest BLE device, the graph at the top changes. When the BLE device is within the specified range, it displays colored bars. This app measured an HM-10 BLE module in the picture.
BLE Android App
The project is an Arduino Mega-based beehive monitoring system. A load cell with a hx711 amplifier is used to measure the beehive's weight continuously. Additionally, the temperature and humidity of the beehive are computed using a DHT11 sensor. An SD card module is used to store sensor and loadcell calibration data. A PIR sensor and a Neo-6m GPS module are used for anti-theft protection. In addition, when motion is detected, a Sim 800L module is used to send an alert. The Sim module sends an update of the beehive periodically by SMS alert. It also responds to specific SMS keywords from a particular phone number when any data is requested. In addition, an HC-05 Bluetooth module can communicate with an Android app to calibrate the loadcell and sensor data. 

[P.S. The wiring diagram is just a demo of the actual circuit].
Beehive monitoring system
A fire alert system with mlx90641 thermal imaging camera, flame sensor and smoke sensor.
Fire Alert System
This is the Toxic gas sensing Module, one of the four-modules for the safety of garments workers. It has two microcontroller units. One is Arduino, which is driving six different MQ gas sensors and CCS811 CO2 sensors and getting gas values in ppm (parts per millions). Besides it is sending all sensor data in JSON format to the ESP-32, the second microcontroller unit.

ESP-32 is driving a display and a buzzer. Besides, it is sending data to the main module via Wifi by creating a mesh network. The buzzer alerts when CO2, tVOC (total volatile organic compound), CH4, LPG or CO level increases to the toxic level. There is also a push switch to snooze the alarm for a few minutes.

I designed the whole module and made the PCB in Proteus and programmed all the microcontrollers in C++ in Arduino IDE.
Toxic gas sensing Module
This is the main module of a larger project. The project contains other 4 modules; Fire Alert Module, Work environment module, Toxic gas module, and Electricity Module. All of them are connected to each other by a mesh network.
The main module contains an Arduino Mega board for controlling and two-node MCU. One of the nodes is esp32 and another one is esp8266x. The esp32 board communicates with other small modules via WiFi by creating a Mesh network. Besides the esp8266x modules communicates with the internet and uploads all the data to google firebase. Besides, there is a Sim 900A module to send a text message when an alarm triggers. All the data are shown in a 3.5-inch TFT LCD display. A speaker outputs the alarms triggered which speaks out the specific alarm.
I designed the whole system, made the PCB in Proteus, and build it in a single layer PCB board. Besides programming in C++ by Arduino IDE was the fun part of the project.
Surokkha Main Module


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Montre1 - 5 sur 31 commentaires
Filtrer les commentaires par : 5,0
€150,00 EUR
Very professional and good comunication. Highly recommend him!
Electronics Microcontroller Software Architecture Electrical Engineering Arduino
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Drapeau de Nicolas S. @nicolassaganias
il y a 2 jours
$75,00 USD
Did very well. Delivered everything as required and made small changes as needed, quickly. Would recommend
C Programming Electronics Microcontroller Electrical Engineering
+1 de plus
Drapeau de Adam Lewis P. @pipesmcgee
il y a 3 mois
$25,00 USD
great Arduino expert. Very expert and good support. Thank you. A++++++++++++++++++++++++++++++
Electronics Microcontroller Electrical Engineering LabVIEW Arduino
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Drapeau de Sorratanak L. @Sorratanak
il y a 4 mois
$200,00 USD
Very cooperative freelancer. Was not hesitant to take extra time out when things did not work. Did not complain even when my hardware got damaged and the project got delayed. Recommend Masrur for Arduino work.
Electronics Microcontroller Electrical Engineering PCB Layout Arduino
Drapeau de Suresh S. @sureshs726
il y a 5 mois
$300,00 USD
Exceptional work. Thorough. Reliable. Able to explain everything in detail. Spends time with you until you are satisfied.
C Programming Electronics Microcontroller Electrical Engineering
+1 de plus
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Drapeau de Christine F. @peper414
il y a 7 mois


Assistant Head, R & D

Durbar Kandari
nov. 2020 - Jusqu'à présent
Currently working here as an R&D manager.

IoT Co-Ordinator

Team Abacus
nov. 2020 - avr. 2021 (5 mois, 1 jour)
I have developed a whole project for the safety of garments workers under the hood of Team Abacus. Currently doing other upgrades on the project.

Firmware & Programming Coordinator

Durbar Kandari
août 2020 - nov. 2020 (3 mois, 1 jour)
I was promoted to Firmware & Programming coordinator. There I learned a lot, experienced a lot.


B.Sc. (Computer Science & Engineering)

University of Engineering and Technology, Rajshahi, Bangladesh 2019 - 2022
(3 ans)


Blockchain technology

Basic on blockchains.

Command line in Linux

Coursera Project Network
Simple command line in Linux

Interfacing with Arduino

Coursera - University of California
Another basic online course.


Cost Effective Bluetooth Technology Based Emergency Medical Ventilator for Respiratory Support

During the corona outbreak or any situation of casualties, artificial breathing support might be necessary to the affected patients. Arduino mega is used as the main control board. Four control parameters like BPM, I: E ratio, Volume, and Pressure can be set by the keypad of the ventilator manually, and also it can be possible remotely by mobile application.

Contactez Md. Masrur S. concernant votre emploi

Connectez-vous pour discuter des détails via la messagerie.


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Meilleures compétences

Arduino 29 Electronics 27 Microcontroller 27 Electrical Engineering 24 Mobile App Development 3

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