I've developed and deployed 20+ production embedded & IoT products across healthcare, agriculture, wearables, security, automotive, and industrial devices. I design connected products end-to-end including firmware, multi-layer PCB, enclosure, and IoT dashboards, from concept to MVP to mass production. As a Senior Embedded Systems Engineer with a background in Electrical Engineering, I help startups, entrepreneurs, and engineering teams design, develop, and launch connected products and stay accountable for the result from the first schematic to the production line. 𝐖𝐇𝐀𝐓 𝐈 𝐎𝐅𝐅𝐄𝐑: ➛ Firmware Development: Secure, optimized C/C++ firmware for various Microcontrollers and SBCs. ➛ Hardware Development & Integration: Multi-layer PCB designs in Altium/KiCad with driver integration. ➛ Enclosure Design: 3D-printable prototypes through production-ready CAD. ➛ IoT Web & Mobile Dashboards + Cloud Integration: Web dashboards and mobile apps integrated with BLE/Wi-Fi/LoRa IoT devices. 𝐏𝐑𝐎𝐃𝐔𝐂𝐓𝐒 𝐈'𝐕𝐄 𝐒𝐇𝐈𝐏𝐏𝐄𝐃 • Frostmed: Vaccine Transport Cooler (ESP32) - safe transit with live temperature visibility. Mass production. • SmartBolt: Smart Door Lock (nRF52840) - NFC tap-to-unlock, BLE app control, months on one battery. • Palm: Smart Thermal Waste Bin (ESP32) - Firmware, PCB, App & cloud fleet management. • NAPL: Groundwater Oil Filtration System (ESP32) - extracts oil from contaminated sites, solar-powered, unattended. • LoRaWAN Smart Call Device: emergency call button that works where cellular and Wi-Fi don't. 𝐓𝐄𝐂𝐇𝐍𝐈𝐂𝐀𝐋 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄: • MCUs & SBCs: ESP32, STM32, nRF51/52/53/91, PIC, Raspberry Pi, Jetson Nano, Linux-based edge devices • Real-Time Operating Systems: FreeRTOS, Zephyr for deterministic, multi-threaded applications • ARM Processors & SoCs: Cortex-M & Cortex-A - bare-metal & RTOS firmware, Linux kernel porting, board support and driver development • Programming Languages: C, Embedded C, C++, MicroPython, Python, TinyML, Shell scripting, TCL • PCB Design: Altium Designer, KiCad, EasyEDA - schematic capture, multi-layer layout, high-speed design, 3D modeling, and prototyping • Networking & Communication Protocols: UART, SPI, I2C, CAN, Modbus, RS-485, BLE, MQTT, LoRaWAN, LoRa, HTTP/HTTPS, TCP/IP, WebSockets for sensor networks and cloud/device communication • Driver Development: Custom low-level drivers for GPIO, ADC, DAC, PWM, Timers, RTC, AC metering ICs, Watchdog, DMA, and memory-mapped IO • Sensor Integration: Environmental (BME280, SHT31), IMU/Motion (MPU6050, BMA400, ADXL345), Biosignals (ECG/bioimpedance, heart rate), Power Monitoring (INA219, ACS712), GPS/GNSS (u-blox), Time-of-Flight, Hall Effect • Cellular & GNSS Modules: SIM7600X (4G LTE), SIM800/900 series, Quectel, u-blox - AT command stacks, GNSS parsing, SMS/Call/HTTP, and fallback logic • Display & HMI: TFT (ILI9341, ST7789), OLED (SSD1306), E-Ink, Addressable LEDs (WS2812B, SK6812 RGBW) - LVGL, Qt, SquareLine Studio • IoT Web Dashboard & Mobile App Development: Flutter-based and custom web/mobile dashboards for remote monitoring and data sharing across devices • IoT Platforms & Cloud Services: AWS IoT Core, Azure IoT Hub, ThingsBoard, Blynk, EMQX, Mosquitto • Embedded Toolchains & IDEs: PlatformIO, ESP-IDF, STM32CubeIDE, nRF Connect SDK, VS Code - version control with Git & GitHub • Security & Updates: TLS/SSL, AES-encrypted OTA with rollback, secure bootloaders, CRC integrity 𝐔𝐒𝐄 𝐂𝐀𝐒𝐄𝐒 𝐈 𝐒𝐏𝐄𝐂𝐈𝐀𝐋𝐈𝐙𝐄 𝐈𝐍: 🔹 Medical & Consumer Devices: wearables, health monitors, smart appliances 🔹 Industrial Automation: sensor/actuator control, live system monitoring 🔹 Smart Agriculture: environmental sensing, LoRa field networks 🔹 Automotive & Energy: CAN systems, GPS tracking, smart metering, BMS 🔹 IoT Connectivity: secure cloud gateways, OTA update pipelines 🔹 Prototyping: POC development, research kits, lab platforms 𝐖𝐇𝐘 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 𝐌𝐄? ➛ Proven production experience - shipped products, not just prototypes. ➛ Milestone-driven development with clear planning and documentation. ➛ You own everything: schematics, firmware repo, Gerbers, STEP files. ➛ Straight answers - I flag requirements that will bite you at certification or manufacturing before you pay for them. ➛ Available post-launch for scaling, upgrades, and long-term support. Send me your product idea, spec, or half-finished prototype, and I'll reply with a concrete assessment of what it takes to ship it.

24 years in commercial architecture, 65+ projects completed from DD through Permit and CCA, Incorporating designer’s concepts with industry standards, coordinating consultants and engineers

Introducing Rebaal Faisal, an expert in CAD SolidWorks and 3D printing. With 7 years of experience in CAD Designs and Mechanical Engineering, Rebaal leads the Silicons Brain As CEO, Rebaal ensures that our CAD services and 3D printing facilities exceed expectations, bringing your visions to life with precision and creativity. Join us on a journey of innovation and craftsmanship, where Silicons Brain is your partner in turning ideas into reality.

🌟 Expert 3D Designer with a Vision for Innovation 🌟 Hello! Are you seeking a skilled 3D designer to transform your ideas into reality? Look no further! With 4 years of experience, I've tackled diverse projects, pushing boundaries and creating impactful solutions. Notable works: 🎯A device that receives electricity from sound. This knife had more of a scientific and research purpose. As soon as we did it, we got great success. 🌐 Device for People with Blindness: Designed an inclusive device to empower individuals with blindness, fostering independence. 🔧 Kits for Manufacturing: Created comprehensive manufacturing kits, streamlining processes and ensuring top-notch quality. 🖨️ 3D Printer Models: Adept at producing visually appealing and structurally sound 3D printer models. My strength lies in understanding and realizing your vision. I listen to your needs, delivering tailor-made solutions that exceed expectations. Innovation is my passion, and I embrace the latest trends and technologies. Collaborate with me for: 🔍 Attention to Detail: Uncompromising precision in every design. 💡 Creative Solutions: Unique and imaginative problem-solving. 🤝 Effective Communication: Clear and prompt interactions throughout the project. 🚀 Timely Delivery: Committed to meeting deadlines. Ready to bring your 3D design project to life? Let's connect and turn your vision into captivating reality!

I'm an experienced PCB Designer and Firmware developer with a strong background in Embedded Systems , PCB Design and manufacturing. With over 3 years of expertise, ✅ PCB DESIGN SERVICES: • Expertise in PCB layout/design for up to 8 layers, offering cost-effective and space-saving solutions. • Skill in creating custom schematics, footprints, symbols, and libraries from scratch. • Proficiency in board design, including the creation of 3D models of PCBs in CAD and PDF formats. • Experienced in firmware development and programming. • Preparation of Gerber files for production, with a focus on selecting components, creating a bill of materials (BOM), and preparing comprehensive manufacturing documentation. ✅ FIRMWARE DEVELOPMENT: • I develop custom firmware for various platforms such as FPGA, MCU, SoCs, ARM, NXP, PIC, Arduino, and Atmel. • I specialize in programming for Bluetooth Low Energy (BLE) and other wireless technologies. ✅ PRODUCT DEVELOPMENT: • I use SolidWorks for mechanical design, including 3D modeling and mold designs. • I also design product enclosures. ✅ SPECIALIZATIONS: FOR ELECTRIC VEHICLES: • I design Battery Management Systems . ✅ FOR INDUSTRIAL/REMOTE CONTROL APPLICATIONS: • I create microcontroller-based designs for robotics, automation, power systems, VFDs, and instrumentation. • I have expertise in communication technologies like WiFi, TX/RX, Bluetooth, BLE, GATT, and radio. ✅ SOFTWARE EXPERTISE: • I'm proficient in software like Altium Designer, Eagle PCB, KiCad, Proteus Design, and more. • I'm skilled in using SolidWorks and AutoCAD for mechanical designs. I understand and can design products to comply with UL Standards, ensuring safety and reliability. My commitment is to provide high-quality, custom PCB designs that meet the specific needs of each client, using the latest software and adhering to the highest industry standards

I'm an Interior Architect and 3D Artist based in Brazil, with over 7 years of experience in residential, commercial, and retail interior design. I’ve collaborated on more than 500 projects, including rollouts for major Brazilian brands, leading all phases from concept development to delivery. 🔹 3D Visualization & Interior Expertise I specialize in creating high-quality, photorealistic 3D renderings using 3ds Max, Corona Renderer, and Photoshop — enhanced with AI workflows for speed and precision. Whether it’s a personal home, a hospitality concept, or a retail space, I bring ideas to life through compelling, detailed visuals. 🔹 What I Offer – 3D modeling and rendering – Interior concept design – Technical detailing (CAD) – Visual merchandising for retail – Creative direction & project coordination 🔹 What You Can Expect Strong communication, organized processes, and full commitment to deadlines. I work independently and collaboratively, adapting to your workflow and needs — always focused on quality, clarity, and client satisfaction. 🔹 Let’s Collaborate I’m available for freelance and remote projects worldwide. Whether you need support on a single image or a long-term design collaboration, I’d love to be part of your creative process.

I have strong experience in 2D and 3D modeling for a wide range of CNC machines and 3D printing systems, including the preparation and export of designs into various CAD file formats for manufacturing and production. I am also skilled in PCB circuit board design and simulation using industry-standard software such as Altium Designer, Proteus, and Multisim for electronic circuit development and testing. In addition, I have hands-on experience in manufacturing educational science kits for high school students, as well as in the design and fabrication of CNC machines. My background includes configuring, installing, and maintaining different types of industrial machinery. Furthermore, I have practical experience in LAN cable installation, network setup, and IP configuration, enabling reliable system connectivity and communication.

I have more than 6 years of engineering experience in infrastructure projects related to the following fields: Laser Scanning, Processing and work with point cloud data (creating DTM, DEM, digitization and modeling), Remote Sensing, Digital Topographic, BIM. I worked on a lot GIS project (making 3D digital maps in standard CAD and GIS format and generate Basic GIS model which consist processed graphical and alphanumerical data), also i worked on several GIS project in Doha-Qatar, for Ashghal (Public Works Authority). Currently learning the Python programming language. I am very dedicated and having an eye for details. Open for any collaboration.

Tai has spent over a decade working directly with factories across China and Asia, managing sourcing, prototyping, tooling, production, and international shipping. This includes handling supplier communication, solving quality issues, negotiating pricing, and making sure products are ready for manufacturing at scale. As Founder & CEO of PrototyperLab, Tai works with startups and eCommerce entrepreneurs to turn ideas into real, manufacturable products. The focus is on building functional prototypes, refining designs for production, and helping clients move into small batch manufacturing without large upfront commitments. The process is hands-on and practical, from early concept and CAD development to testing, iteration, and production setup. Projects often involve a mix of materials and methods including 3D printing, CNC, molding, and assembly, depending on the product. Before PrototyperLab, Tai spent 11 years as CEO of Traction BPO, building and managing teams and operations. Earlier experience includes running an affiliate business with 300+ websites, along with a background in accounting at PepsiCo and Freshfields Bruckhaus Deringer. Core Experience: 15+ years importing and manufacturing in China Product development and design for manufacturing (DFM) Supplier sourcing, negotiation, and quality control Prototyping through to mass production International logistics from Asia to US and Europe Cost control for startups and small batch production Focused on getting products built properly, tested early, and ready for production.

I design parametric 3D models and ship the manufacturing files that actually go to the shop floor — Fusion 360 + DXFs for laser/CNC + sheet-metal flat patterns + BOMs + fabrication drawings. Files released and built, not just rendered. Background that most CAD freelancers don't have: I co-founded and ran a metal fabrication venture in Mexico (fiber laser, sheet metal, welding, finishing) before going full-time on design. Every part I model is informed by having actually built parts. That means fewer DFM revisions, files that don't fight the fabricator, and fixtures that come together the first time. Recent work: • 23-part metal store-fixture program for a national apparel retailer (via Grupo AXO) — full Fusion 360 parametric models, laser-ready DXFs, BOMs, GA drawings • Reverse-engineering and replacement-part design from photos and physical samples • Hardware enclosures and brackets in PLA / PETG / PETG-CF on a Creality K1C (in-house prototyping before files go out) What I'm best at: • Fusion 360 parametric modeling and assemblies • Sheet-metal design with proper bend allowances, flats, and DXF release • Reverse engineering (photos + calipers, or 3D scan via partner bureau) • Manufacturing drawings, BOMs, and DFM review • Photoreal renders for client presentations and Amazon/Shopify listings Bilingual (English / Spanish, technical-grade in both). Based in Mexico City, fully remote, US time-zone friendly. RFC-registered and able to invoice cleanly. If you're a hardware founder, fabricator, store-fixture or POP house, or product startup that needs CAD that closes the loop with manufacturing — let's talk.