I’m a Professional Engineer of California in Electronics, Communications, and Controls, experienced in RF, embedded systems, and automated test development for hardware-focused teams. I am educated on the West Coast in Electrical Engineering with an emphasis on wireless technologies and am working toward a Graduate degree in Signal and Image Processing. Whether you need help with prototyping, validation, troubleshooting, or building reliable engineering workflows, I can help. - Experience with RF systems, embedded hardware, Python tools, and lab/test automation - Support from concept development through integration, validation, and production handoff - Strong communication, documentation, and cross-functional collaboration

MATLAB-focused Electrical and Computer Engineer specializing in power and energy system analysis, engineering calculations, and electronics-based solutions. Hands-on experience with Arduino systems, PCB design, matlab report generation and simulation-supported prototyping.. With 3 years of hands-on experience, I have developed a deep understanding of power system principles, analysis, and implementation. Key Skills: #Circuit Analysis and Design : *designing analog and digital circuit #Programming and Software Development: *C *C++, *Python *Java #Knowledge of software engineering principles, *data structures, and algorithms #Digital Systems Design: *VHDL or Verilog *understanding of FPGA *CPLD *Microcontrollers and Embedded Systems: *Arduino or Raspberry Pi) and #Power Electronics: *power converters, *inverters, *motor drives, *power supplies *proteas *power world #Signal Processing: *Fourier analysis, *modulation, and demodulation * DSP tools *MATLAB or Simulink MATLAB Power System Analysis Energy Calculations Arduino PCB Design Circuit Simulation #Control Systems: *PID controllers, last but not least I am i hard worker * Working with people attending project demonstration and helping people

# Embedded Hardware Development & Electronics Manufacturing Partner | SME & Hardware Companies Helping hardware companies turn engineering concepts into manufacturable electronic products. I work with **electronics companies, hardware startups, OEM brands, and engineering teams** needing practical support across embedded hardware development, PCB design, prototyping, and low-volume manufacturing. With 20+ years in electronics engineering, manufacturing, and international supply chain collaboration, I bridge **product engineering and manufacturing execution** — helping clients reduce development risk, accelerate iteration, and improve production readiness. ## Why Clients Work With Me ✔ 20+ years in electronics engineering, manufacturing & supply chain management ✔ 13 years with Fortune 500 companies including Flextronics and Huawei ✔ Founder of engineering & manufacturing organizations supporting hardware product development ✔ Direct access to cross-functional engineering and manufacturing resources in Shenzhen ✔ Experience supporting embedded electronics, IoT, industrial devices, telecom, smart products, and automation equipment --- ## Core Services ### Embedded Hardware Development • Hardware architecture & system design • Circuit design (analog / digital) • PCB design & layout • Embedded systems integration • MCU / wireless platform selection • Sensor & connectivity integration • DFM / DFT engineering review --- ### Electronics Product Development • Prototype development • Technology selection & feasibility analysis • Product engineering support • Engineering validation assistance • Manufacturing readiness planning --- ### Electronics Manufacturing Support • PCB fabrication & PCB assembly • Prototype build & pilot production • Component sourcing & supply chain coordination • Box build / product assembly support • Low-volume electronics manufacturing • Contract manufacturing coordination --- ## Typical Clients I am typically a good fit for: ✔ SME electronics companies ✔ Industrial IoT developers ✔ Embedded device companies ✔ Hardware product teams ✔ OEM / ODM brands ✔ Engineering managers needing external hardware development support --- ## Technologies & Domains ### Embedded / Hardware Platforms ESP32, STM32, ARM, Raspberry Pi, Jetson, embedded Linux platforms ### Connectivity BLE, WiFi, Ethernet, MQTT, NFC, RFID, Zigbee, LTE, NB-IoT, UART, SPI, I2C ### Product Categories Industrial IoT Smart Devices Monitoring & Measurement Embedded Electronics Consumer Electronics Automation Equipment Telecom & Connectivity Systems --- ## Working Style I deliver the best results when projects have: ✔ Clear technical objectives ✔ Defined scope or engineering requirements ✔ Collaborative communication ✔ Practical development and commercialization goals --- ## Selected Feedback "Frankie is an excellent engineer and supervisor… expecting my next opportunity to work with Frankie." — Huawei Hardware R&D Manager "Xiaolin’s team is very professional and hardworking… always satisfied with the jobs they delivered." — CEO, electronics product company "Outstanding support in hardware engineering and execution." — Engineering Director, global networking company Tags: Electrical Engineering, Electronics Engineer, 3Dmodeling,ID,Firmware, PCB layout, Schematics, Altium Designer, IoT, Power Electronics, Bluetooth, BLE, RF, TI,FPGA, SoC, VHDL, Verilog, Xilinx, Altera, C, C++, MCU, RTOS, prototype, validation, Enclosures, BMS, SolidWorks, Android, iOS, Java, Apps, Database, AWS, Python, ESP32, Arduino, PIC, NXP, STM32, LCD, Raspberry Pi, Wi-Fi, Prototyping, WAN, Assembly, Motor Driver, JLC,Electronic, Consumer, Automotive, Industrial, Medical, Custom Product Design, Supply Chain Management, Sourcing Agency,Procurement, Logistics, International Trade, Quality Control, Product Development, Manufacturing, Prototype, Testing, Product Launch, Project Management, Client Satisfaction, English, Chinese, China, Communication, Coordination, Innovation, Creativity, Technical Skills, Analytical Skills, Problem-Solving, Leadership, Time Management, Cost Reduction.

I am a professional with over 5 years of industrial experience working in the Embedded Systems Domain. Having gone through the complete product lifecycle, I can take your idea from initial concept to production capable design. Following are my offered services, skills, and expertise:- Services: • Embedded and Real-Time Systems Design • Schematic design and printed circuit board (PCB) layout • Prototyping and integration development • Bare-metal and real-time firmware development • Embedded Linux development ------------------------------------------------------------------------------------------------------------- Skills: • Programming Languages: C, C++, Python, Assembly, VHDL, Verilog • Operating Systems: FreeRTOS, TI-RTOS, Micrium Kernel OS-III,CMX RTOS • Architecture: ARM cortex M4/M3/M0+ • Processors: STM32, TI TM4C, EFM32, Nordic nRF52, ESP32, Atmel SAMD21/L22, PIC 18 • Hardware Interfaces: UART, I2C, SPI, USB FS/HS, CAN, RS-485/232 • Other Devices (RTC(DS3231M, PCF2127), EEPROM( AT24C01D), SPI Flash (Atmel)). • Debugging tools: (Segger- Jlink, Atmel ICE, PICKIT, FTDI). • IDE’s (IAR,KEIL, CCS, STMCubeMX, Atmel Studio, MPlab). ------------------------------------------------------------------------------------------------------------ IOT: • Wi-Fi Devices (ESP32, ESP8266, TI CC32xx, ATWINC1500). • Cellular Devices (u-blox (LTE CAT M1/NB_IOT, CAT4, 3G, 2G devices), Quectel BG96). • BLE/Wireless (Nordic nRF528xx, HC06). • GPS/GNSS Devices (u-blox Zoe-M8/Neo-8Q). • Networking: HTTP(S), TCP, UDP, NTP, MQTT(S), LWM2M • Cloud services: (AWS IOT Core, AWS SNS)

I'm a Telecommunications Engineer and expert in programming (MATLAB, VHDL, Verilog, and Python) and Signal Processing. My skills are included but not limited to: MATLAB Programming, Embedded Design Systems and Embedded Programming (focused on Yocto Linux Customization) FPGA and Digital Design, Python Programming, Signal Processing and Data Analysis, EEG and Bio-Signal Processing, Artificial Intelligence, 5G and Beyond 5G Communication Systems. Compressive Sensing and Sparse Coding, and Reinforcement Learning are also my recent fields of research. I will design your GUI software by PyQt5 and .Net C# tools.

With 81+ delivered hardware projects and 5+ years of industry experience before Upwork, I help startups, R&D teams, and product-driven companies transform ideas into reliable, manufacturable electronic products. I am an Electrical & Electronics Engineer specialized in embedded hardware, PCB design, and system-level product development. My designs are built for real-world deployment, certification, and scaling, not just lab testing. Core Expertise 🔹 PCB Design & Hardware Engineering • Schematic capture (Altium / KiCad / industry-standard tools) • Datasheet-driven component selection • High-speed & mixed-signal layout • Power integrity & signal integrity considerations • DFM, DFA, EMI-aware layout practices • Complete manufacturing files (Gerbers, BOM, Pick & Place) 🔹 Embedded Systems & Firmware • ESP32, STM32, nRF52, ARM Cortex-M platforms • BLE, WiFi, CAN, UART, SPI, I²C, RS485 • Low-power architecture & battery optimization • Real-time systems & peripheral integration • Sensor fusion & communication interfaces 🔹 Power Electronics & Energy Systems • DC-DC converters (buck, boost, buck-boost) • Battery-powered systems & BMS integration • Power stage design & efficiency optimization • Protection circuits & thermal considerations 🔹 Product Domains • IoT devices • Consumer electronics & smart gadgets • Robotics & motor control systems • Drones & UAV electronics • ROV & underwater systems • Industrial control systems • Custom embedded platforms What Makes My Work Different I design with manufacturability, reliability, cost optimization, and scalability in mind from day one. I stay involved through: • Hardware revisions • Design validation • Pre-certification preparation • Production support I think like a product engineer, not just a circuit designer. When required, I collaborate with trusted software and mechanical engineers to deliver complete system-level solutions, not isolated PCBs. All communication, milestones, and payments are handled through Upwork to ensure structured and transparent collaboration. If you're looking for an engineer who understands architecture, constraints, validation, and production — not just schematics, we’ll work well togethe

Hello, I specialize in building reliable, high-quality IoT and Embedded hardware systems — from initial concept to full-scale production. My work focuses on RF engineering, PCB layout, embedded firmware development, and system integration for IoT, industrial control, and consumer electronics. I have deep expertise in tools such as Altium Designer, KiCad, Cadence Allegro, and Fusion 360, combined with strong knowledge of embedded systems, firmware programming, and wireless communication technologies (Bluetooth, Wi-Fi, BLE). I ensure every design is optimized for signal integrity, EMI/EMC compliance, manufacturability, and cost efficiency. - My Core Skills: Embedded Systems & Firmware – STM32, ESP32, ARM Cortex, AVR, PIC, Raspberry Pi, Arduino, Embedded Linux FPGA Programming – VHDL/Verilog Programming with Xilinx and InteFPGA Wireless & IoT Systems – Bluetooth / Wi-Fi / BLE hardware integration and firmware like ESP23 and etc. RF Engineering – SDR, Front-end, Antenna, Simulation, and RF system integration. Circuit Design & Simulation – Analog/digital design, signal integrity, power analysis PCB Design & Layout – Single/multi-layer, high-speed, mixed-signal, RF boards and power boards 3D & Mechanical Integration – Fusion 360 for enclosure and component fit Testing & Validation – Prototyping, debugging, and hardware optimization - Selected Past Projects: * IoT Smart Sensor Module – Designed a 4-layer PCB and developed ESP32 firmware with Bluetooth/Wi-Fi connectivity. * Custom SDR RF PCB – Designed a 20-layer PCB using Zynq Ultra-scale controller and added RF front-end and Antenna. Worked 600MHz ~ 6GHz frequency. * Industrial Motor Control Board – Developed control and power circuitry using STM32 MCU with real-time embedded firmware. * Wireless Data Logger – Created compact, low-power data acquisition hardware with BLE communication. * Consumer Audio Amplifier Board – Designed high-fidelity analog/digital PCB with minimal noise and distortion. I take pride in delivering clean, production-ready designs, clear documentation, and strong communication throughout every project. Whether you need a full product development cycle or support for part of your design, I’m ready to help you bring your hardware ideas to life. Let’s work together to turn your concept into a professional, manufacturable solution. Thank you for reading my profile.

I am an Electrical Engineer with 4 years of hands-on experience in various facets of engineering. My expertise spans across PCB Designing, Power Electronics, Embedded Systems, and the Industrial Automation field. Proficient in Python Programming, C Programming, MATLAB, Verilog, and VHDL, I bring a diverse skill set to the table. Furthermore, my proficiency extends beyond conventional engineering realms. I possess adeptness in crafting 3D CAD models for enclosures and Robotics, enhancing my capacity for comprehensive project execution. Beyond engineering, I offer specialized skills in Technical Content Writing. I assist clients in developing Application Notes, Articles, Buying Guides, How-to guides, and e-commerce-affiliated content, enabling them to elevate their presence and competitiveness in the tech industry.

🔧 Electronics Engineer | PCB Specialist | Firmware & Hardware Development 🔧 I am an electronics engineer with extensive experience in hardware, PCB design, and embedded firmware development, specializing in the industrial, automotive, and medical sectors. I have worked on projects requiring high reliability, energy efficiency, and compliance with technical standards, ensuring that the final products are certification-ready and meet regulatory requirements. 💡 What I Offer: ✅ PCB design in KiCAD and Altium for critical applications ✅ Embedded firmware for microcontrollers (STM32, ESP32, PIC, AVR) ✅ FPGA and Verilog development for high-performance applications ✅ Industrial communication (SPI, I2C, RS-485, USB HID, CAN) ✅ Robust circuit design for demanding environments and certification processes I have delivered solutions to clients worldwide, ensuring quality, efficiency, and on-time delivery. If you're looking for a professional committed to developing reliable, certification-ready products, I’m ready to contribute to your project. Let’s work together! 🚀

I am a hardware engineer with 10+ years of experience designing and bringing up complex embedded systems from technical specification and architecture to PCB design, validation, and production support. What I do: Design microcontroller- and microprocessor-based hardware for industrial, IoT, automotive-adjacent, and communication devices Own the full hardware cycle: component selection, schematics, PCB, bring-up, validation Work closely with embedded software teams on hardware–software integration Hardware & PCB Multilayer PCB design (up to 12 layers, controlled impedance, mixed-signal up to ~1 GHz) High-speed interfaces: USB 2.0 / 3.2, PCIe, Ethernet, SATA, HDMI, LPDDR4 DDR4 signal integrity modeling and timing analysis using Cadence Sigrity Power electronics: DC/DC, LDOs, power sequencing, thermal considerations EMC pre-compliance and debugging (including BCI testing) Embedded & Systems Platforms: STM32, ESP32, AVR, i.MX6, Raspberry Pi Firmware support: C, HAL, FreeRTOS, board bring-up, low-level debugging Embedded Linux systems and gateway-class devices Interfaces: SPI, I2C, UART, USB, SDIO, RS-232/485, Ethernet, PCIe Advanced & Domain Experience FPGA-assisted systems and hardware accelerator applications Automotive-grade hardware validation, DFMEA / FTA / FMEDA (Medini) Medical-related electronics (PPG, ECG, EMG) Industrial automation, IoT, telecom-related projects Tools & Bring-up Altium Designer, OrCAD / Allegro, SolidWorks, Git Professional lab equipment: oscilloscope, logic analyzer, signal generator Prototype assembly, rework, and debugging If you need an engineer who can design hardware, bring it up, debug real problems, and deliver a working prototype - I can help.