Pavlo D.
Private message 
Kharkiv,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
Русский: fluent
English: intermediate
Skills and abilities
Programming
- C & C++
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Desktop Apps
from 45 USD for project
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Embedded Systems & Microcontrollers
from 111 USD for project
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Python
from 45 USD for project
Design & art
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3D Modeling
from 45 USD for project
Architecture
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Mechanical Engineering & Instrument Making
from 111 USD for variant
Portfolio
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Controller of the engraving machine
Embedded Systems & Microcontrollers
Granite engraver, based on Stm32f446
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178 USD Stand for calibrated liquefied gas flow
Embedded Systems & Microcontrollers
Controller with indication, has the ability to connect GSM, GPS, WiFi, RS485(x2), RS232.
Such functionality has been added with the prospect of transforming the board into a monitoring system for liquefied gas, both for mobile and stationary objects.
In this case, the controller "communicates" via HART modem with the flow meter Promass-80 (Endress&Hauser).
… Power supply 24V, built-in surge protection circuit.
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BMS-1cell
Embedded Systems & Microcontrollers
single cell controller LiIon or LiFePo4 for 20+ amp-hours, functions - voltage/temperature monitoring, passive balancing by average value, status indication Number of cells connected in series up to 512, a special communication protocol has been developed, according to which information about all 512 batteries will be updated in 10 seconds
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Power supply of the device
Embedded Systems & Microcontrollers
4 batteries in a 2S2P configuration, 40 Wh,
outputs 2*9V 0.5A; 5V 3A; 5V 1A with low noise level
hardware charge control,
software via I2C - on/off outputs, % discharge, current, voltage, temperature
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RF-button
Embedded Systems & Microcontrollers
Radio button, 2.4GHz ISM, powered by a 50 mAh lithium-polymer battery, USB-micro charging
Reviews and compliments on completed projects 12 2
19 June
89 USD
Preparation of a DIY kit for self-assembly of ArduboyMicroFX
The project was not completed. The freelancer initially reached out and discussed the details, but ultimately the work was not finished. I did not receive a final result that could be used. Because of this, the project had to be closed as uncompleted. Communication was normal, but there was no actual execution of the task.
24 April
45 USD
Stm32 + can + rs485 + hx711
The work was done professionally and quickly. I recommend collaboration.
Pavlo seemed competent at first, raised the fee but it did not meet the technical requirements. After a brief discussion, he agreed to redo it, but after that, he stopped responding. In the end, he did not complete the order.
9 April
16 USD
Development of a solution for reading firmware from the STC microcontroller
Thank you for the cooperation
A responsible person, I recommend for collaboration
Excellent specialist, fast work, competent, good feedback, we will continue to work further!
10 December 2025
334 USD
It is necessary to develop a program for the TP70 controller (Delta)
Our collaboration with Pavlo was productive. A lot of nerves went into creating the software for the controller. But Pavlo overcame it, and our equipment will be able to function in the future.
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8 December 2025
156 USD
Preliminary consultation on device development
Everything is great. The freelancer successfully completed the assigned task.
1 October 2025
134 USD
MDB board
all good. there was a moment - everything was agreed
7 September 2025
45 USD
Development of the board
Everything is great. Thank you. I recommend.
7 August 2025
45 USD
Analysis and correction of a C program for STM32
Thank you for the promptness and feedback on each issue
25 June 2025
67 USD
Analysis and correction of a C program for STM32
Everything went great, I recommend the freelancer
17 June 2025
89 USD
Development of electronic circuit, board
A reliable and very competent performer - I recommend to everyone!
Everything is great, Pavlo knows his stuff
5 June 2025
31 USD
Design of the heating plate
Everything is great! Fast and reliable! I recommend to everyone!
Activity
| Projects underway 1 | Budget | Added | Deadlines | Proposal | |
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Schematic and PCB design
89 USD
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| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
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Schematic and PCB design
89 USD
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Electrical diagram
22 USD
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Software development for Arduino (RF modules 3–7.5 GHz, automatic frequency scanning)
601 USD
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Preparation of a DIY kit for self-assembly of ArduboyMicroFX
89 USD
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Writing code for Arduino
22 USD
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Project 1
33 USD
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Development of a printed circuit board (PCB) in KiCad based on the ready schematic (ESP32-S3, 4 slots)
89 USD
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Extract the firmware from the STM32 board
111 USD
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Development of a single-screw extruder automation system
22 USD
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Stm32 + can + rs485 + hx711
45 USD
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