• Hi, I'm Stephen J 👋
• PCB Design Engineer | Chennai, India
• B.E. Electrical & Electronics Engineering — Veltech Multitech (2023, CGPA 8.16)
• 1.5 years industrial experience at L&T Shipbuilding (Indian Navy defence ships)

🛠️ Skills AreaTools & Technologies PCB Design KiCad 10, Altium Designer Schematic Capture Multi-sheet schematics, ERC, netlist PCB Layout4-layer stackup, design rules, Gerber exportSimulationLTSpice (in progress)Microcontrollers ATmega328P, AVR architecture Communication ProtocolsI²C, SPI, UARTPower ElectronicsIGBT inverters, H-bridge, Fronius welding machines Programming Embedded C (learning), Git

📦 PCB Projects 🔴 MCU Datalogger

ATmega328P · DS1307 RTC · Dual EEPROM (24LC025 + 24LC1025) · 4-layer PCB · KiCad 10

A standalone data logging board with real-time clock, 128KB non-volatile storage, battery backup, and full I/O breakout headers (UART, I²C, SPI, ICSP). Designed on a 4-layer stackup with 35 nets, 117 pads, and 37 vias.

🔋 Breadboard Power Supply

LM7812 · LM7912 · Dual-rail ±12V · KiCad · JLCPCB fabricated

Dual-rail regulated power supply PCB for breadboard prototyping. Linear regulators with decoupling capacitors, DC barrel jack input, and screw terminal output. PCB fabricated and tested.

💡 LED Torch

Single-layer · KiCad · Fabricated & tested

First fabricated PCB project — a simple LED torch circuit. Focused on footprint selection, DRC, and Gerber file generation for JLCPCB manufacture.

🏭 Industrial Experience L&T Shipbuilding — Electrical Maintenance Engineer (2023 – 2025)

Maintained electrical systems on Indian Navy defence ships Component-level troubleshooting of Fronius inverter-based welding machines (TransSteel, TPS 5000, MagicWave 4000) IGBT testing, H-bridge fault diagnosis, power electronics repair Error code diagnosis, wire feeder fault isolation, capacitor and diode testing

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