Vitaliy F. Profile

5.0

(6 reviews)

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$20 USD / hour

orsha,

belarus

$20 USD / hour

It's currently 6:26 AM here

Joined January 14, 2022

0 Recommendations

Vitaliy F.

@fedosvital

5.0

(6 reviews)

4.5

$20 USD / hour

orsha,

belarus

$20 USD / hour

86%

Jobs Completed

91%

On Budget

91%

On Time

25%

Repeat Hire Rate

Hardware Expert

I am an electronic engineer and have gathered a lot of experiences in industrial & commercial equipments development for 10+ years. Main Skills: - Circuit Design and Simulation (Matlab, Proteus, Altium) - PCB design and fabrication (Altium, Eagle, Kicad, Pads, DipTrace, Proteus) - IoT & Embedded Firmware (ARM, DSP, Arduino, AVR, FPGA, PLC) - Wireless Technologies (WIFI, Bluetooth, LoRa, ZigBee, RFID, GPRS/LTE) - RF Design and simulation (Genesys, CST, ANSYS, ADS) - 3D design and Molding for Product's Enclosure (Solidworks, AutoCAD) - 3D printing and CNC manufacturing for Full prototype - Signal Processing (Filter , FFT, FEC, SPEEX, Imaging...) My Experiences: - Android Tablet (Allwinner A33, AP223) - Dance Education Shoes (Nordic BLE, 3-Axis IMU MPU9250) - IP5306 2.4A power bank (2.4A, IP5306) - Industrial Doppler Flowmeter (Ultrasonic Transducer, 4G/LTE, Arduino , FPGA) - Finger HRM Oximeter (Dialog BLE, MAX30102) - Wearable Product (NeoPixel LEDstrip, Arduino) - 1KW MPPT Solar Charger (ESP32) - 5K3K LCD Display Driver (Arduino) - 700W Inverter (TL494) - Amiga 2000 RGBtoHDMI Converter (CPLD, Raspberry) - Circoled (8xOLED displays, ESP32 Pico D4) - IoT Temperature-Humidity Blynk Portable (DHT11, ESP32) - Open--Smartwatch (HC-05, STM32, MPU6050, MAX30102) ... I will do my best for your project and can deliver the full prototype. Thanks for viewing my profile. Sincerly1 Vitaliy.

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Portfolio Items

IP5306 2.4A power bank

Finger HRM Oximeter

This smartwatch can measure the linear acceleration of your hand, rotational speed, heart rate, and SpO2 (oxygen saturation). All of these data will be processed by an STM32 processor with an ARM Cortex-M core. You can find these essential components here.

MPU6050 was used for IMU purposes. I use the Kalman filter to reduce the noise effect and extract clean data from the sensor (3-axis linear acceleration, 3-axis rotational velocity, and 3-axis rotation angle).

MAX30102 is the sensor used for health care purposes. We just read raw data and devolve the processes to the smartphone.

Open-watch will send these collected data to a smartphone via a Bluetooth module. On the smartphone side, an Android app reads the data from Bluetooth and processes them. For health care applications like hear

Open-Watch: An open-source handmade smartwatch

I want to make a device that can monitor air temperature and humidity but is not connected to the power cable. Because the location being monitored is not allow to use a cable. then the idea was created to make this portable monitoring tool.

For the source code you can download it from here https://www.dropbox.com/s/x4m8apeq2jhv1k3/IoT_pcbway_Humi_temp.zip?dl=0
link for the video : https://www.youtube.com/watch?v=RFJZcJATbMU

IoT Temperature Humidity Blynk Portable

This project is definitely going crazy! I build a scrolling message display using eight of those tiny OLED displays, arranged around a PCB and controlled by an ESP32 Pico D4. With the help of the Blynk App I have created a UI for typing your messages and selecting the speed. It can show the battery state, temperature and accelerometer data as well.

Circoled - Eight tiny OLED displays arranged in a circle

Power Interruption in many areas of the world is still happening due to different causes. Power Inverter is a backup power supply using a 12V battery that will invert it to 220V AC. Using a power Inverter you can use your appliances like TV, Radio, Audio system as well as lightings like a bulb, fluorescent, etc. This inverter has three main parts: 12V Battery, Inverter Board, and Centertapped Transformer (Primary 12, 0 ,12, and Secondary 220V)

700 WATTS INVERTER 12V TO 220V

Reviews

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Showing 1 - 5 out of 6 reviews

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5.0

$100.00 USD

Project for Vitaliy F.

Vitaliy is a great freelancer, very knowledgable, very efficient and always delivers, would highly recommend

C Programming

Algorithm

Arduino

Bluetooth Low Energy (BLE)

+1 more

Jason L.

@jasonlowe1

•

26 days ago

5.0

$535.00 USD

Project for Vitaliy F.

He was excellent overall. Great technical skills, extremely professional and very courteous. He goes above and beyond what is expected and follows through to complete every aspect of the project completely and thoroughly. It is rare to come across such high-quality professionals and designers.

Kavita G.

@Kaviuday2

•

30 days ago

2.0

$100.00 USD

Development of a LoRa Mesh system for dry contacts/relays -- 2

The PCB design and the work he ACTUALLY did was good, the PCB design was professional, he worked with me well on the design and all the needed adjustments and delivered a detailed work on the first stage. BUT and it's a big BUT I hired Vitaliy to design a turn-key project, PCB, Firmware, Calibration Software, and testing of the equipment. He didn't deliver anything but the PCB design and gave me some lame excuse for why he can't do the firmware and continue to finish the project as promised.

Electronics

Microcontroller

Product Design

Internet of Things (IoT)

LoRa

Dori R.

@doribak

•

1 month ago

5.0

$150.00 USD

Custom Point LED Light. cloud based Programmer Design

Vitaliy has been awesome to work with he really knows what he is doing and helped me thru the whole project, he is your go to guy. God bless you brother!

C Programming

Electronics

Microcontroller

Electrical Engineering

Arduino