s
stephanedemer1

stephan

@stephanedemer1

Turning Ideas Into Real Products with Precision, Creativity, and Engineering

France
Anglais, Français, Espagnol, Allemand
Certaines informations sont présentées en anglais.
À propos de moi
I’m a skilled Computer Scientist and Electronics Engineer with 10 years of experience in PCB design, circuit design, programming, and PCB reverse engineering. I specialize in KiCad, Altium, and EasyEDA, with strong expertise in C, C++, Python, Java, Arduino, IoT, AI, and embedded systems. I’ve completed 100+ electronics and IoT projects, delivering reliable and practical solutions tailored to each client’s needs. Feel free to contact me anytime I’ll respond as soon as possible.... Plus d’infos

Compétences

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stephanedemer1
stephan
hors ligne • 
Temps de réponse moyen de 1 heure

Voir mes services

Cartes de circuits imprimés (PCB)
I will design schematic and pcb design in easyeda kicad altium
De45 $US / projetPlus de détails
Systèmes intégrés & IoT
I will do arduino programming and schematic circuit
De30 $US / projetPlus de détails

Portfolio

Expérience professionnelle

Elex_Tech

PCB Designer & PCB Reverse Engineer

Elex Tech • Freelance

Feb 2022 - Present • 4 yrs 6 mos

- Design and develop custom PCBs from concept to production, including schematic capture, multilayer layout, and manufacturing-ready outputs (Gerbers, BOM, pick-and-place). - Specialize in embedded systems design using ESP32, STM32, and ATmega platforms. - Perform PCB reverse engineering, recreating schematics and layouts from existing or damaged boards. - Develop firmware solutions for microcontrollers, including communication protocols (UART, I2C, SPI, BLE, Wi-Fi). - Implement PLC programming for industrial automation and control systems. - Optimize designs for size, cost, manufacturability, and signal integrity. - Provide end-to-end support, including debugging, prototyping, and production guidance. Key Achievements - Successfully delivered 100+ PCB design and embedded system projects across diverse applications (consumer electronics, industrial control, IoT, wearable devices). - Built strong expertise in compact and high-density PCB design, including designs as small as 40mm × 15mm wearable devices. - Developed multiple ESP32-based smart systems (BLE, Wi-Fi, real-time control, IoT integration). - Completed complex reverse engineering projects, reconstructing undocumented hardware for redesign and optimization. - Integrated mixed-signal systems including power electronics, RF modules, sensors, and communication interfaces. - Maintained consistent high client satisfaction with repeat customers and long-term collaborations. - Delivered production-ready designs compatible with major manufacturers (JLCPCB, PCBWay, etc.). Core Expertise - PCB Design: Altium Designer, KiCad, EasyEDA - Microcontrollers: ESP32, STM32, ATmega - Communication: BLE, Wi-Fi, UART, SPI, I2C, RS485 - Embedded Firmware Development - PLC Programming & Industrial Control - Reverse Engineering & Circuit Analysis - Power Electronics & Battery Management