Oleksandr G. Profile

5,0

(8 arvostelua)

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$30 USD / tunti

horodok,

ukraine

$30 USD / tunti

Aika on tällä hetkellä 3:20 ap. täällä

Liittynyt syyskuuta 29, 2021

0 Suosittelee

Oleksandr G.

@AlexandrGergel

5,0

(8 arvostelua)

4,8

91%

$30 USD / tunti

horodok,

ukraine

$30 USD / tunti

88 %

Suoritetut työt

100 %

Budjetin mukaisesti

100 %

Aikataulussa

Ei saatavilla

Uudelleenpalkkausaste

C/C++/Python | RTOS/Embedded Linux & Android

Experienced embedded system engineer with a passion for bringing products to life. With more than 7 years of experience in the industry, has a proven track record in firmware development, hardware integration, and product launches. Driven by a desire to solve problems and create value for customers. ☑️ language Assembly, C Programming, C++, Python, Shell script, Makefile ☑️ System Programming Real-time Operaing systems, Embedded Linux, Linux device driver, Windows device driver ☑️ High level programming Win32, Linux user space, Android NDK, Qt, MFC ☑️ Firmware Programming PIC microcontroller, ATMEL, ATMEGA, STM32, Nordic, ESP32, Arduino, Raspberry PI ☑️ Embedded Communication protocol I2C, Serial Peripheral Interface(SPI), UART, USB, GPIO, Controller Area Network(CAN), Recommended Standard 232(RS232), one-wire, Recommend Standard 485(RS485), Bluetooth ☑️ Hardware design Circuit design, schematic design, PCB design, Multi-layer PCB design, Electronic design, Altium designer ☑️ Debugging JTAG, GDB, Print ☑️ Reversing IDA, OllyDbg, 2-layer PCB reversing ☑️ Security Executable file behavior analyzing, Executable file static analyzing Website security analyzing, Troubleshoot PC security level

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Kirjaudu sisään keskustellaksesi yksityiskohdista chatissa.

Portfolio

High-speed (HDMI, DDR)
HDI (high-density interconnect) with blind and buried vias
Fine pitch BGAs 0.4 mm and 0.5 mm
Power boards
RF Bluetooth
Wi-Fi
Lora
Design with fine-pitch BGA and QFN assembly
Flex and rigid-flex design
Chip evaluation and chip characterization
Radio frequency design
Stacked and staggered microvias
IPC class 2 and class 3/ES
DFM/DFA layout validation included

PCB Design

The previous cashier system in the shop is running on a windows system. However, the windows system needs to be equipped with hardware that can run windows, so the cost is very high, and the cash register system uses very limited software. So the customer wants to develop an Android-based POS machine. The client offered detailed hardware information, such as what interfaces and dimensions should be around.
We designed the development board then based on the hardware characteristics of the development board, we carried out the configuration of the Android system.

Android version is 5.0 lollipop
CPU RK3288 & RAM 4GB
32G eMMC
Support 2 touch screen
Support hot boot
Support 8-channel USB2.0
Support HDMI

POS Machine Android System Customize

Musical Spectrum Analyzer

Air quality monitoring systems (AQMS) integrate measurements and modeling using smart homes to assess climate change impacts on indoor air quality.

Air Quality Monitor Systems

Arvostelut

Muutokset tallennettu

Näytetään 1 - 5 / 8 arvostelua

Suodata arvosteluja:

5,0

$200,00 USD

Query linux shared-memory data by building a parser in C/C++.

Oleksandr (Alex) is the best technical expert you could find for any C/C++/Linux/Shared Memory/IPC work! Low level programming is his expertise and he understands the work quickly. Really encourage you to work with Alex.

C Programming

Linux

Software Architecture

C++ Programming

UNIX

+1 enemmän

Mayur P.

@mayuraho

•

6 kuukautta sitten

5,0

$800,00 USD

Project for Oleksandr G.

He did a great job!!! A+++ Went above and beyond and provided extra solutions which we really appreciate it. I started this project with one thing to get done, but I added more milestones within this project soon as he was done with the initial work, as he was doing a such good job. We will hire him again.

Electronics

Electrical Engineering

PCB Layout

Arduino

+1 enemmän

Sonny M.

@ilinkpro

•

6 kuukautta sitten

5,0

$600,00 USD

PCB Design & Microcontroller programming

Very good and experienced, nice communication!

Attila Alin K.

@alinkoppandi

•

vuosi sitten

0,0

$10,00 USD

Project 33809921 has been deleted

The project is not completed according to the dispute

Michael H.

@NYCyber

•

vuosi sitten

5,0

$240,00 USD

Build a private blockchain on ethereum using geth with multiple nodes (150 nodes) and multiple miners (10 miners)

Yes he did great job, excellent job

Sana A.

@Projbuilder95

•

2 vuotta sitten

Kokemus

Jabil

toukok. 2021 - Voimassa

1. Wearable device development with Linux system 2. AOSP building, RTOS configuration 3. RTOS device driver development with various sensors 4. BLE communication implementation 5. Setup remote hardware debug environment

toukok. 2015 - maalisk. 2020 (4 vuotta, 10 kuukautta)

Karaoke TV System development 1. Developing KTV system on STB device 2. Customizing the uCOS RTOS system 3. Deploy audio processing module(From FFMPEGՅ to system 4. Display subtitles with custom embedded vector font(MVF) 5. Made FAT32 filesystem encryption tool 6. Made ELF file parse tool Android POS machine development 1. Android OS building with hardware configuration 2. Hardware PCB Designing with Altium designer 3. Character Linux driver development 4. Block Linux driver development