Romain Lamothe

Electronics engineer
Web & firmware developer
Product designer

8+ years experience

@Lyon, France

Welcome

I design electronic products and software. I mostly work for start-ups, research and industry.

▸ Customer portal


Electronic products

Here are some commercial projects I contributed on, most of them in collaboration with ONWI, a small electronics design office and medium-sized production unit based near Lyon, France.

Contribution

- R&D
- Electronics
- Firmware
- UI/UX
- Factory software
- Bluetooth App

Electric winch handle

This product helps elderly and disabled people to raise boat sails. It features a safe and accurate sensorless 3-phase motor control.

Contribution

- Electronics
- Firmware
- Webserver
- UI/UX
- Web interface
- Testing

Wireless powered sensors

Long-range 2.45Ghz power transmitter, energy harvester and high-precision sensor measure. Data are saved and sent over Ethernet, LoRa or 4G.

Contribution

- Product definition
- UI/UX
- Editing software
- Electronics
- Firmware
- Production tools
- Testing

LED / Audio controller

Complete solution to design powerful LED sequences on collectable figurines. Realtime render over USB. Electronics are optimized for large scale production.

Contribution

- Firmware
- Testing

Children flashlight

Smooth LED control with selectable animations.
Smart low-battery indication.

Contribution

- Product definition
- Electronics
- UI/UX
- Firmware
- Testing

Heating system controller

Advanced control system. Industrial safety grade with 100+ requirements and variables. Modbus support over Ethernet or RS485.

Contribution

- Electronics
- Firmware
- Testing

LED bar

High efficiency, nano foot-print PSU design. Control by DMX protocol. On-site configuration with custom DMX sequences.

Contribution

- Electronics
- Firmware
- Testing

Touch-sensitive climbing hold

Design and tuning of the touch-sensitive functionality.

Contribution

- Product design
- Electronics
- Firmware
- Display software
- Testing

EM-field meter for MRIs

Measure of electromagnetic fields inside MRIs for research. Non-magnetic hardware. Data transferred via optical fiber.

Open-source projects

I allow some of my time to open-source contributions, here are some creations.

Vue.js file-toolbar-menu component

Vue.js document-editor component

Publications

As former research engineer at CEA Leti, part of the largest French public science research center.

Assisting the movement of a wheel-mounted object...

3-phase powered audio amplifier

What I do


Software / Firmware

Programming languages Frameworks Cryptology
JavaScript Vue.js, Pixi.js, Node.js AES, RSA, SHA
C / Embedded C / C++ Cordova, Capacitor (iOS/Android)  
HTML5 / CSS3 Electron Favorite IDEs
WebGL 2D QT VSCode
PHP lwIP, Segger emWin Eclipse-based


Hardware

MCU & FPGA EDA & CAD
ESP32 Autodesk Fusion 360 (formerly Eagle)
STM32, STM8 KiCad
nRF52, NXP, other ARM Cortex-M SolidWorks
Renesas RL78  
Xilinx Spartan FPGA  


Technologies

Wireless Transport & protocols Technologies
Bluetooth Low-Energy SPI, I2C, CAN, 1-wire Brushless motor ESC
Bluetooth Mesh UART / RS232 Induction
LoRaWAN RS485 / DMX LCD / OLED displays
Wi-Fi USB Sensors / Touch
868 Mhz Ethernet, Modbus Audio


Project management

Agile based management: Scrum (development in sprints), user story tasks, continuous integration, test-driven development.


What I don’t do


I don’t work for military, spatial, aviation or automotive applications. Also I’m not a big fan of Python, C#, Ruby, Perl, ASP.NET, Visual Basic and outdated languages.