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  • 04:30 (UTC -12:00)

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Aleksei327/README.md

Aleksei Subbotin

Embedded Electronics & Power Control Developer — France / Remote

I design, build, program, and debug embedded-electronics prototypes, measurement and protection systems, and power-control hardware. My repositories include working bench-tested devices as well as clearly labelled engineering prototypes.

What I work with

  • STM32F1, STM32G4, AVR, and Arduino Nano firmware in C
  • STM32CubeIDE, STM32CubeMX, HRTIM, ADC, DAC, OPAMP, and comparators
  • SPI, I2C, software I2C, TFT displays, rotary encoders, and device interfaces
  • voltage and current measurement, shunt sensing, protection, and CC/CV control
  • KiCad and EasyEDA schematics and PCB layout
  • prototype assembly, hardware bring-up, troubleshooting, and bench validation
  • modernization and documentation of existing electronic designs

Featured projects

Project Status Highlights
Laboratory PSU Meter and Protection Working, bench-tested device STM32F103, INA226, ST7735, encoder, adjustable current limit, latched hardware ALERT, ready-to-flash firmware
STM32G474 Power Charger Operational R&D prototype; firmware in development Synchronous buck, HRTIM, IR2113, current sensing, OPAMP/DAC/COMP hardware shutdown, experimental CC/CV
Markus Component Tester 1.49m — LC Adaptation Working hardware adaptation Arduino Nano, ST7735S, Zener test converter, external transistor LC oscillator, EasyEDA PCB and documented firmware variants
STM32F103 INA226 LBP Indicator Earlier measurement-only version INA226 measurements, ST7735 interface, and a software-I2C workaround tested on the author's Blue Pill hardware

Available for remote projects

I am open to freelance and collaborative work involving:

  • embedded firmware and peripheral integration;
  • measurement and protection controllers;
  • laboratory equipment and custom electronic instruments;
  • schematic capture and PCB layout;
  • prototype assembly, bring-up, debugging, and design modernization.

Project documentation is provided in English and Russian where available. Prototype measurements are identified as such and are not presented as production-certified specifications.

Contact: alsubfr@hotmail.com

Pinned Loading

  1. STM32F103-INA226-ST7735-Indicator-Encoder-Protection-PS STM32F103-INA226-ST7735-Indicator-Encoder-Protection-PS Public

    An advanced measurement and active protection system for Laboratory Power Supplies (LPS) based on STM32F103C8T6, INA226 current sensor, and ST7735 display.

    C 2

  2. STM32G474-Power-Charger STM32G474-Power-Charger Public

    Experimental STM32G474-based high-current battery charger and programmable synchronous buck converter. KiCad hardware and STM32CubeIDE firmware.

    C

  3. TransistorTester-Markus-1.49-LC TransistorTester-Markus-1.49-LC Public

    Markus Reschke Component Tester 1.49m derivative: Arduino Nano, ST7735S, Zener converter and transistor LC meter

    C

  4. STM32F103-BluePill-INA226-ST7735-LBP-Indicator STM32F103-BluePill-INA226-ST7735-LBP-Indicator Public

    Legacy measurement-only STM32F103 + INA226 + ST7735 laboratory PSU indicator with software I2C; superseded by the active protection version.

    C 4