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.
- 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
| 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 |
| Precision 0-50 V Laboratory PSU | Design stage: schematic and PCB complete, hardware not yet built | STM32G474 with HRTIM tracking synchronous buck plus OPA454 linear post-regulator, REF5025 and 16-bit DAC8830 setpoint, 20-bit INA228 metering, layered hardware protection, full KiCad sources and bilingual documentation |
| 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 |
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