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Аватарка користувача

Aleksandrs S.

@sanja1989

annual-level-two.svg
5,0
28
5,5
5,5
94%

Top quality modern and creative software developer

$25 USD / год.
・
Прапор
United States (10:28 дп)
・
На сайті з січня 12, 2013
$25 USD / год.
・
I have been studying software development since I was 13 years old. Gained experience in microelectronics programming, CNC machines using and improvement, desktop/tablet/mobile application development, website and CMS creation, engaged in photography and sound/video capture and post-processing.
Верифікації
Вчасно
100%
В межах бюджету
100%
Рейтинг прийняття
100%
Рейтинг повторного найняття
20%
Freelancer C# Programmers United States
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Портфоліо

Портфоліо

12473423
ESP32 device to fuzz USB VIDs and PIDs and corresponding desktop software to monitor Windows responses to newly connected devices. Desktop software is made using Qt C++ library.
USB VID and PID Fuzzer
12466732
Developed ESP32 S3 based hardware and esp-idf based code for herb/plant centrifugal extractor automation. It includes temperature monitoring, VFD control over MODBUS or voltage adjustment, pressure sensors monitoring, and valve operation for liquid transfer between vessels based on pressure changes and/or liquid level measurement. Since sensors cannot properly operate inside the centrifuge, I had to rely on pressure monitoring to detect when liquid fully transferred from one vessel to another. I had to work as an extractor operator for many weeks to understand how it works and later to test it in real life.
Herb/Plant Centrifugal Extractor
Developed ESP32 S3 based hardware and esp-idf based code for herb/plant centrifugal extractor automation. It includes temperature monitoring, VFD control over MODBUS or voltage adjustment, pressure sensors monitoring, and valve operation for liquid transfer between vessels based on pressure changes and/or liquid level measurement. Since sensors cannot properly operate inside the centrifuge, I had to rely on pressure monitoring to detect when liquid fully transferred from one vessel to another. I had to work as an extractor operator for many weeks to understand how it works and later to test it in real life.
Herb/Plant Centrifugal Extractor
12466219
Isolated UART-RS485 transceiver. Works in both directions. Has two separate grounds for RS485 and UART to minimize electromagnetic interference.
UART to RS485 isolated transceiver
12457389
Application for Linux/Windows tablets to be used with PlayGineering Ltd. servers to display sports game statistics, playback video, and make instructions in real time. I made a Telestartor—part of the program that gives an ability to draw vector graphics over video in real time and replay it later, and a pack of Qt Designer custom widgets for a better GUI designing process.
Coach Tablet
Application for Linux/Windows tablets to be used with PlayGineering Ltd. servers to display sports game statistics, playback video, and make instructions in real time. I made a Telestartor—part of the program that gives an ability to draw vector graphics over video in real time and replay it later, and a pack of Qt Designer custom widgets for a better GUI designing process.
Coach Tablet
Application for Linux/Windows tablets to be used with PlayGineering Ltd. servers to display sports game statistics, playback video, and make instructions in real time. I made a Telestartor—part of the program that gives an ability to draw vector graphics over video in real time and replay it later, and a pack of Qt Designer custom widgets for a better GUI designing process.
Coach Tablet
12451577
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
12451413
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
12473423
ESP32 device to fuzz USB VIDs and PIDs and corresponding desktop software to monitor Windows responses to newly connected devices. Desktop software is made using Qt C++ library.
USB VID and PID Fuzzer
12466732
Developed ESP32 S3 based hardware and esp-idf based code for herb/plant centrifugal extractor automation. It includes temperature monitoring, VFD control over MODBUS or voltage adjustment, pressure sensors monitoring, and valve operation for liquid transfer between vessels based on pressure changes and/or liquid level measurement. Since sensors cannot properly operate inside the centrifuge, I had to rely on pressure monitoring to detect when liquid fully transferred from one vessel to another. I had to work as an extractor operator for many weeks to understand how it works and later to test it in real life.
Herb/Plant Centrifugal Extractor
Developed ESP32 S3 based hardware and esp-idf based code for herb/plant centrifugal extractor automation. It includes temperature monitoring, VFD control over MODBUS or voltage adjustment, pressure sensors monitoring, and valve operation for liquid transfer between vessels based on pressure changes and/or liquid level measurement. Since sensors cannot properly operate inside the centrifuge, I had to rely on pressure monitoring to detect when liquid fully transferred from one vessel to another. I had to work as an extractor operator for many weeks to understand how it works and later to test it in real life.
Herb/Plant Centrifugal Extractor
12466219
Isolated UART-RS485 transceiver. Works in both directions. Has two separate grounds for RS485 and UART to minimize electromagnetic interference.
UART to RS485 isolated transceiver
12457389
Application for Linux/Windows tablets to be used with PlayGineering Ltd. servers to display sports game statistics, playback video, and make instructions in real time. I made a Telestartor—part of the program that gives an ability to draw vector graphics over video in real time and replay it later, and a pack of Qt Designer custom widgets for a better GUI designing process.
Coach Tablet
Application for Linux/Windows tablets to be used with PlayGineering Ltd. servers to display sports game statistics, playback video, and make instructions in real time. I made a Telestartor—part of the program that gives an ability to draw vector graphics over video in real time and replay it later, and a pack of Qt Designer custom widgets for a better GUI designing process.
Coach Tablet
Application for Linux/Windows tablets to be used with PlayGineering Ltd. servers to display sports game statistics, playback video, and make instructions in real time. I made a Telestartor—part of the program that gives an ability to draw vector graphics over video in real time and replay it later, and a pack of Qt Designer custom widgets for a better GUI designing process.
Coach Tablet
12451577
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
Liquid filling machine based on 3D printer platform. I adapted syringe to work as extruder, and liquid vessel as heated bed. Heated hose from PTFE tube and Kanthal wire was designed to keep liquid warm while transferring from vessel to syringe.
Liquid Filling Machine
12451413
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
I have been the leading engineer on cone filling machine development, conducting an engineering team consisted of 3 people working on-site in Los Angeles, and 4 people in Minsk, Belarus. My role was to distribute tasks based on employee skills, evaluate results and choose preferred direction of development after discussing with project manager (company owner). I developed a ESP32 S3 based PCB prototype and a C++ code for controlling 9 stepper motors independently, reading end-stops, a load cell and operating 2 servos. LEDC and MCPWM where used for motor control.
Cone Filling Machine
Зміни збережено
5.0 · 28 Reviews
Відгуки
O
OBJ Pascal Linux unit. • $50 USD
Great Freelancer to work with. Will use him again!
Liam M.
@oemolitra
•
Прапор
Big Bear City, United States
•
6 years ago
Поділитися
V
Design an application that can create Charts • $116,70 USD
The best freelancer I've come across, and an outstanding App developer. Delivered my project in time, and he's a guy who expects money after delivering work. The quality of work was also excellent.
Vamsi Varma N.
@vv10
•
Прапор
Carbondale, United States
•
9 years ago
Поділитися
Аватарка користувача
Custom Company Software • $100 USD
Did exactly what I need without question. Everything works as exactly as it should. I did not even have to ask for corrections.
Daryl B.
@adresellers
•
Прапор
Herndon, United States
•
9 years ago
Поділитися
P
repairing program • $50 USD
excellent programmer he delivered perfect program timely manner thank you.
Fatih K.
@projobsneeded
•
Прапор
Sydney, Australia
•
10 years ago
Поділитися
Аватарка користувача
Free Passport Photo Printer + Setup installer + Sourcecode + Nice looking GUI • $150 USD
Excellent work as always. 100% Recommended.
Samuel C.
@samwhise
•
Прапор
Seattle, United States
•
10 years ago
Поділитися
Досвід
Application Engineer
вер., 2016 - серп., 2017
•
11 months
PlayGineereing Systems
вер., 2016 - серп., 2017
•
11 months
UI application development for different platforms. Video processing.
вер., 2016 - серп., 2017
•
11 months
C# Application Developer
груд., 2015 - серп., 2016
•
8 months
SIA CoMed
груд., 2015 - серп., 2016
•
8 months
C# application development. Usage of MSSQL.
груд., 2015 - серп., 2016
•
8 months
GUI Application Developer
лип., 2012 - лип., 2013
•
1 year
Light Emissions LTD
лип., 2012 - лип., 2013
•
1 year
Developing GUI application for controlling Low Resolution LED Displays.
лип., 2012 - лип., 2013
•
1 year
Освіта
Rigas Tehniska Universitate
2016 - 2017
•
1 year
Master's unfinished
Прапор
Latvia
2016 - 2017
•
1 year
Rigas Tehniska Universitate
2008 - 2016
•
8 years
Bachelor's degree
Прапор
Latvia
2008 - 2016
•
8 years
Сертифікати
P
Preferred Freelancer Program SLA
Freelancer Orientation
Freelancer Orientation
C++ - Level 1
C++
US English - Level 1
US English
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 Про нас
Про нас Як це працює Безпека Інвестиції Мапа сайту Історії Новини Команда Нагороди Прес-релізи Вакансії
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