Electronics & embedded systems — PCB design, RF, firmware
ladjelatemehdi@gmail.com · LinkedIn · Champs-sur-Marne, France
I design complete boards — schematic, multi-layer layout, controlled impedance — and the documentation that makes them manufacturable: stackup, BOM, DRC/DFM checks, fabrication notes. The three below are Rev A, design-complete.
Currently finishing an M2 in Electronics (3EA) at Université Gustave Eiffel, after an M2 in Computer Engineering. Looking for a 5–6 month end-of-studies internship from April 2027 in electronics, RF or embedded R&D, anywhere in France.
![]() LoRa / BLE sensor node Ø55 mm 868 MHz + 2.4 GHz · 50 Ω CPW solar + LiFePO₄ |
![]() USB-C dock 130 × 85 mm 7-port USB 3.2 Gen 1 + GbE 90/100 Ω · per-port sensing |
![]() CAN / RS-485 gateway 73 × 33 mm STM32F072 · isolated CAN 2.0B isolated half-duplex RS-485 |
Each PCB opens in KiCanvas — the board in the browser, no KiCad installation required — and each schematic ships as a PDF that reads end to end. Every repository carries a BOM; the two controlled-impedance boards also document their stackup and fabrication.
- PCB — multi-layer boards, controlled impedance (50 / 90 / 100 Ω), split ground planes, KiCad 10, stackup selection and DFM review
- RF — grounded coplanar waveguides, match/filter/balun front ends, PCB antennas, 2D quasi-static pre-check; 4nec2/NEC and CST/HFSS from coursework
- Firmware — C/C++ on STM32, bare-metal and RTOS, embedded Linux, USB, CAN, I²C, SPI
- Instrumentation — oscilloscope, logic analyser, signal generator, lab supply, VNA, soldering and rework
| Repository | What it is |
|---|---|
| lora-ble-sensor-node | Off-grid agricultural node. Bare nRF52840 (aQFN73) with an on-board BLE antenna, SX1262 at 868 MHz behind a switchless match/filter/balun with a U.FL measurement point. |
| usb3-dock | Self-powered dock around a 7-port USB 3.2 Gen 1 hub and Gigabit Ethernet, with five INA219 on 0.1 Ω shunts — one per external port — and latched per-port protection. |
| usb-can-rs485-dongle | Isolated diagnostic gateway for industrial buses: STM32F072 with ADM2582E and ADM3053, split host/field ground domains, no copper under the isolators. |


