Aleksey Shevchenko
Rating
Skills and abilities
Architecture
Portfolio
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158 USD Map of air trees
EngineeringBased on the ESP32 controller, the indication is performed on the address LEDs. To reflect the current information about the air of anxiety, it is necessary to make a connection to the home Wi-Fi network.
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45 USD The iPhone 13 Mini
EngineeringIphone 13 mini with Type-C port
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81 USD Software for SIM cards
EngineeringSoftware for SIM cards
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83 USD PoE injector for Starlink
EngineeringPoE injector for Starlink
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113 USD Installation of ESP32
EngineeringRemote control device based on ESP32
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34 USD Bicycle lighting on the battery.
EngineeringBicycle lighting 5600K per 500 lm. It operates from a battery type 18650.
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135 USD Powerful DC-DC Converters
EngineeringLeft: upgrading from 3B to 12B. 5a .
Reducing from 12V to 5V. 5a .
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56 USD Remote control device based on ESP32
EngineeringRemote control device based on ESP32
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90 USD Remote control device based on ESP32
EngineeringRemote control device based on ESP32
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90 USD Development of the controller of the steering station
EngineeringThe Rasperi PI and ESP8266 supported block was designed to control the drive station, has 2 galvanically disconnected RS485 for OS from the drive and 4 discrete outputs to drive.
Rasperi Pi - operated as a SPU (for supplementing the software under Linux)
ESP8266 - as a remote control.
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23 USD DC power and voltage measurement
EngineeringDigital device for measuring DC current up to 100A (through external shunt) and voltage up to 1000V.
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68 USD Step engine control driver based on the PIC controller.
EngineeringStep engine control driver based on the PIC-controller with optron feedback.
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63 USD Intelligent column on ESP32
EngineeringDevelopment of the electronics block for a smart column based on ESP32.
The scheme operates the ESP32-WROOM with the ability to connect the microSD card, and a 5W audio amplifier. The food is produced from the 220V network.
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451 USD Industrial Interface Block
EngineeringSTM32F407 beige block for data collection through the RS485, RS232, UART, USB and their subsequent display on the LED display and WEB page.
The location of the elements is due to the structure of the body.
The functional:
1) Data output on the display through the FSMC interface
… 2) Supports the membrane keyboard with 6 buttons for navigation by menu.
3) ESP32 is installed to extract data to a web page.
4) Galvanically disconnected interface RS485
5) Galvanically disconnected interface RS232
6) Galvanically disconnected USB interface
7) Galvanically disbanded 2 discreet outputs.
8) There is the possibility of switching the processor by microUSB
9) Inbound power voltage from 9 to 24V, built-in protection against pollution, overtension, from scratching (with fuel connection).
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79 USD Industrial Lithium Ion Battery Charge Block
EngineeringDescription of the block:
Industrial buffer block with a output voltage of 4.2V. It is used in industrial robotics to maintain the constant demand of corner sensors.
On the RS485 interface, the battery charging current is set, and the battery voltage information is transmitted. Lithium-ion batteries are used as a buffer, with a maximum capacity of 10Ah.
… Tech. data
Input power voltage from 9 to 24W
Isolated interface RS485
The maximum charging flow can be set by the RS485 interface or by a combination of resistors. Maximum fixed current 3A.
The entrance chains are protected from pollution and overtension. There is also protection against the battery overflow.
Its own consumption of the block in the absence of basic 3uA power
Reviews and compliments on completed projects 55
14 May 2024
11 USD
Connection scheme to the microcontroller
Top person who has the talent and desire to do great work
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12 May 2024
12 USD
Microcontroller structural diagram
Top-notch, completes tasks the next day, all great
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12 May 2024
11 USD
To draw an electrical schematic diagram of the Microcontroller operation in elect
Top performer, completes tasks the next day, everything is great
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25 April 2024
22 USD
Paid project amendments
10 out of 10 on all points. I will contact you again
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23 March 2024
11 USD
Documentation of the project
I’m not calling for the first time! The work is done as usual at the height. I recommend this executive Alexey as a professional of my business! 100 out of 100!The !
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16 March 2024
203 USD
The principle scheme
A great specialist! I recommend it as a person with a literary approach to the matter! Helped me to get into my project and realize it well! I advise everyone! If you’re looking for a specialist and you’re reading my review, you’ve already found it! Congratulations to everyone in making their decisions!
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14 December 2023
135 USD
Printed Pult Payment
Співпраця з Олексієм мені дуже сподобалась. Проект виконано згідно ТЗ.
Рекомендую до співпраці
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31 October 2023
11 USD
Chronicles by Photo
I strongly recommend! Thanks to the great professional.
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12 October 2023
11 USD
Visualization of RoE Injector Components
As always quickly and professionally.
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12 October 2023
11 USD
Processing of the RoE injector scheme
As always, it is at the highest level.
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11 October 2023
11 USD
Repair the fee
good! good! good! good! good!
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10 October 2023
113 USD
Tracking of PCB
The work has been done before the specified deadline, I recommend cooperation.
10 October 2023
34 USD
Redesign of the RoE Injector
As always, it’s clear and professional.
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29 September 2023
16 USD
Repair the herber file and create the order V2
I didn’t get any more money, but I was very happy with the work. Always on connection and full professionalism
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25 September 2023
34 USD
Low voltage protection scheme at the PoE injector entrance
As always at the highest level.
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20 September 2023
16 USD
It is necessary to perform the projection/drawing of the plate-cplitter.
The project was done very quickly and efficiently! I will definitely go again!
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18 September 2023
11 USD
Components for DC-DC Converter
As always, it is clear and professional.
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15 September 2023
23 USD
Starlink PoE Injector Change Components
As always, everything is clear and in the scheduled time. All additional questions and moments are resolved. A professional of your business.
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1 September 2023
34 USD
DC Converter for Verba 2. Replacement of XL7005A
As always quickly and professionally.
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29 August 2023
38 USD
Passive PoE injector for Starlink. The prototype of ready payment
As always, it’s fast and professional.
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26 August 2023
45 USD
The project
Perfectly done, thank you
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23 August 2023
11 USD
Processing of Printed Payment
The project is done quickly and efficiently.
18 August 2023
113 USD
DC Converter for Verba 2
As always, super professional work. Alexis is a very disciplined and professional person. The work was done earlier than planned.
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15 August 2023
50 USD
The Maket Plate
Everything is done well and in time.
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1 August 2023
45 USD
Payment
Everything very quickly and quickly.
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20 July 2023
5 USD
REVIEW TZ on electronic device
Co-worked on the audit of the TZ project on HW development. It is done as agreed, thank you for cooperation.
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20 July 2023
20 USD
Develop the specification for the electronic part of the MVP solar dryer.
It’s all very clear and grateful.
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20 July 2023
9 USD
Partnership for the project
This is the second cooperation, all done as quickly as possible (in the prescribed deadlines) and quality. Thank you !
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18 July 2023
11 USD
Preparing files for production (Gerber, Pick&Place, etc.) The Altium
Alexey performed the tasks in the discussed time, all explained by the course of performance, it is visible that the person is a professional and a fan of his business. It’s a pleasure to work with such people. 10 out of 10 in all points. Thank you !
16 July 2023
58 USD
Gerber - file
Alexey was the first to recall my project. Written with him, very quickly they found a common language: very pleasant, in communication, a person. He told me a lot of what and how to do better, literally all over the roofs broke down. He ordered a Gerber file project. The task was to do what is shown in the video. I strongly recommend Alexey as a professional specialist!
8 July 2023
83 USD
Passive PoE Injector for Starlink
Very pleasant to work with Alexis. Professional work, clear compliance with schedules, high qualifications and knowledge in the electronics industry.
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10 June 2023
34 USD
Lighting
The work was done a lot earlier in the planned deadline, very quality. Also, from all the incomprehensible questions, Alexis gave a distorted answer. I recommend cooperation.
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7 June 2023
68 USD
Проектування DC-DC Step-UP. EasyEDA
Everything went wonderfully!
Alexis quickly joined the project!
All time in communication and quickly and professionally fulfilled all assigned tasks!
I plan for further cooperation!
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7 March 2023
83 USD
Тактична миша
A great partner, I hope to expand our cooperation in the future!
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13 January 2023
79 USD
Design of a low power battery wireless charging system
Very good impression - competent, fast, organized
21 December 2022
11 USD
Consultation on the emergency lamp scheme
I’m happy with work, I don’t have instructions.
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21 December 2022
11 USD
Changes in payments
greatly . Fast and quality
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8 December 2022
45 USD
Modeling of load
Everything is great! He listened to all his wishes and performed his work in time. I recommend it!
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3 December 2022
23 USD
Electrical engine (alternator) for the gasoline generator
Them of them. The task is completed in full scope. Additionally received answers to all the related questions that arose during the agreement and implementation of the T.Z.
1 December 2022
5 USD
Strengthening of Signal
A good and good advice on the questions!
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13 November 2022
90 USD
Personal project
The project was carried out quickly on the task with detailed consultations and instructions after the initial result. I recommend it.
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8 November 2022
9 USD
Consulting on the correct selection of the source of storage with all details
I order not for the first time, Alexey Pill performs all the way suggests and helps. thank you
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1 November 2022
23 USD
Processing of pay
The project was carried out on the task, in full, earlier and with detailed explanations.
28 October 2022
113 USD
Develop an autonomous power source of the esp32 controller and engine
Everything is super! It’s not the first time I work and I’m going to continue.
Responsibility and professionalism at the highest level.
26 October 2022
23 USD
Tracking Pay PCB Routing
The work was done very quickly, the quality was good. In communication it is easy and comfortable. remained satisfied
12 October 2022
5 USD
Correction of errors and advice on divorce
Profi of your business. The consultation was at the highest level.
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11 October 2022
9 USD
Consulting on the correct selection of the source of storage with all details
Everything is smooth and good! Thank you for work
23 September 2022
90 USD
Creating a herber file on the existing print fee
Super professional, I hope to cooperate in the future.
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21 July 2022
5 USD
4-Step Engine Management
It was pleasant to collaborate.
I am pleased to contact again.
Professionally, clearly and in case.
I recommend
20 July 2022
63 USD
Development of the electromotor control scheme on the PIC - controller
It’s all very quickly and quality. We continue cooperation.
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16 July 2022
5 USD
Making an electric motor control scheme on the PIC - controller
Everything is good, we have moved to the next stage of cooperation.
29 June 2022
45 USD
Audio player with content recording via Bluetooth on flash
Thank you for cooperation! Quick connection and operational response to the "flowing" conditions of the project. satisfied with the work done. I strongly recommend cooperation.
12 May 2022
5 USD
ККР
Made in time and quality.
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12 May 2022
5 USD
Презентація
The work is done quickly and efficiently.
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10 May 2022
16 USD
Microprocessory Technique Course
The freelancer performed the work in time and quality.
Activity
| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
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Optimization of Detector Operation
4059 USD
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CM5 HAT
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Development of a Technical Project for a STARTUP
523 USD
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Development of a plate for helmet stand
113 USD
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Development of the board according to the schematic
113 USD
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Phase short circuit indication device
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Diagram and Board on ESP32
113 USD
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Development of electrical diagrams for elevators
116 USD
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Drones in agriculture
11 USD
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Reengineering of the ESC block
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