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.
Romain Lamothe
Electronics engineer
Web & firmware developer
Product designer
8+ years experience
Welcome
I design electronic products and software. I mostly work for start-ups, research and industry.
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
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.
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.
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...
Patent WO2015128239
3-phase powered audio amplifier
Patent FR3033675A1
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.