Core Capabilities
Embedded Hardware Design
Multilayer PCB layout, schematic capture, component selection & BOM optimization conforming to DFM/DFA/EMI/EMC protocols.
Firmware Engineering
Bare-metal register-level programming & RTOS implementations (FreeRTOS) utilizing STM32, ESP32, PIC, and MSP430 MCUs.
Test Automation (ATE)
Custom hardware QA testing rigs, active relay selection matrices, measurement equipment controls, and automated reporting systems.
Industrial & IoT Connectivity
Delta PLC, HMI, VFD industrial setups, combined with telematics, asset tracking, cellular OpenCPU, and Modbus/MQTT channels.
Engagement Models
Project-Based Contracts
Fixed-scope, objective-driven design milestones. Ideal for specific PCB design iterations, driver codebases, or automation rigs.
Technical Consulting
Advising on system architectures, conducting schematic/layout DFM verification checks, and coordinating directly with manufacturing vendors.
Retainer Agreements
Ongoing monthly support models for firmware maintenance, field debug escalations, hardware updates, and general advisory.
Selected Project Engagements
Electrosurgical Unit (ESU) Automated Test Rig
Challenge: Manual QA checks of high-frequency surgical generator outputs were slow and susceptible to human reading or recording errors.
Solution: Architected a custom STM32-based automated routing relay box. Built a python OCR layer to read and evaluate Rigol power monitor outputs, sending data into a .NET Excel sheet generator.
Outcome: Replaced manual tests with an automated script-driven setup, boosting throughput and removing error points.
Distributed Temperature Sensor (DTS) Controller
Challenge: Logging and supervising multiple high-precision thermocouple data points inside metallurgical furnaces while maintaining strict serial interface isolation.
Solution: Engineered an STM32-based multi-channel reading interface card. Wrote real-time aggregation firmware and established Modbus RTU telemetry protocols over RS485 linked to a Linux embedded IPC.
Outcome: Simplified cabling complexity, integrated automated safety trips, and eliminated furnace runaway occurrences.
Low-Power GSM/GPRS Asset Tracker (Pikol)
Challenge: Packing long-standby telematics logging into extremely tight physical envelopes with strict budget targets.
Solution: Developed custom cellular firmware directly on Quectel OpenCPU baseband chips, bypassing external MCUs. Optimized sleep schedules and DFM routing.
Outcome: Achieved 30-day battery life on a single cell, saving 20% on total material bill-of-materials (BOM) cost.
Professional Standards
Reliability Focus
Hardware designs tailored to withstand industrial spikes and medical noise, implementing hardware-in-the-loop (HIL) diagnostics and safety interlocks.
BOM Optimization
Proactive component selection, footprint cross-referencing, and single-source dependency mitigations to maintain supply lines during scaling.