Engineering projects
Nine builds from schematic to silicon — RF amplifiers, power converters, intelligent sensing and high-speed digital interfaces.
Low-Cost Air Quality Device
Arduino ozone monitoring with a novel Adaptive Kalman–LightGBM (AKL/GBM) estimator. Manuscript under review at IEEE Sensor Journal.
S-band MOS Amplifier at 2.4 GHz
Single-stage 2.4 GHz MOSFET RF amplifier for Wi-Fi / BLE front-ends. Full EM and transistor-level simulation in ADS, fabricated and VNA-verified.
Differential Feedback DC-DC Converter
A novel differential switching-mode converter using two parallel SMPSs with inverted control to suppress ripple and improve stability.
VOC & PM Emissions from PCM Buildings
Multi-sensor ESP32 system with ML-based inference quantifying VOC and particulate emissions from phase-change building materials.
Custom MP3 Player
Standalone ESP32 MP3 player: microSD (VS1053) through an I²S amplifier on a fully custom PCB with real-time decode and physical controls.
Custom ESP32 Development Board
A custom ESP32-WROOM dev board designed in Altium Designer — USB-C power and programming, onboard regulation, user I/O and full GPIO expansion.
Buck-Boost Power Module Board
Compact 4-layer LTC3780 buck-boost DC-DC module — 6–18 V in, adjustable 3.3–12 V out at ~1 A, with full input protection.
USB-C 2.0 Multiport Dock
Compact 70 × 45 mm 6-layer dock PCB — USB hub controller, USB-A, downstream USB-C, microSD and Ethernet with full DRC-clean routing.
USB-C to 4-Port USB 3.0 Hub
85 × 40 mm SuperSpeed hub — 5 Gbps TX/RX routing on 90 Ω controlled-impedance differential pairs over a 6-layer stackup.