Anthony K.

If you need your complex tech ideas transformed into market-ready products, I've got you. I am an Electrical and Electronics Engineer with a decade's experience in PCB design and firmware development. I perform end-to-end product development, specializing in mixed-signal and high-speed PCB design, firmware, prototyping, and bench validation. With a fully equipped home lab, I am your go-to hardware engineer for board bring-up, rapid prototyping, and robust firmware for wearable, IOT, ultra-low-power applications, and robotics. I manage every aspect of the design process, so that the engineer who designs your PCB also manages stack-up, power and ground planes, routing signals, and writes firmware. This means you avoid hardware and firmware mismatch issues, thus saving you debug time and respins, meaning you are billed less. Most importantly, with a home electronics lab, I will design your hardware and firmware, and also bring up your board to test it and ship it to you, so you have a working product delivered to you. I have worked with Spanish, American, and European clients, companies, and startups and thus have mastered worldwide logistics, ensuring your working board is delivered on time. SERVICES I OFFER: 1. High-speed mixed-signal PCB design, including digital/analog and RF design. 2.Schematic design and multilayer PCB layout in Altium and KiCad. 3. ESP32, STM32, Arduino, and nRF-based hardware projects, including wearables, low-power, IoT, and industrial designs. 4. Embedded firmware for Nordic (nRF), ESP32, Arduino, and STM32. 5. Up to 12-layer PCBs with high-density interconnects (HDI), 828-pin BGAs, 0.65 mm pitch, and 1000+ components. 6. High-speed PCB designs incorporating eMMC 5.1, PCIe Gen4, DDR3/DDR4/DDR5, LPDDR3/4, 7. USB 2.0/3.0, HDMI 2.0/2.1/2.2, LVDS, and 10/100/1000 Mbps Ethernet, ensuring EMI/EMC compliance, adhering to strict signal integrity (SI) and power integrity (PI), and making sure sensitive analog and noisy digital signals coexist on one board without interference. 8. BLE, Wi-Fi, LoRa, LoRaWAN. 9. Microcontrollers, SoMs and CoBs based projects with specialized skills in ARM Cortex (STM32F407, STM32F103, STM32WL,) Tensilica Xtensa 32-bit LX6/ LX7 (ESP32, ESP32-S2 / ESP32-S3), RISC-V Architecture (ESP32-C2 / ESP32-C3 / ESP32-C6/ESP32-P4), Nordic nRF52/53/91 series, custom boards for Raspberry Pi CM4, RK3399 and LattePanda Mu, a powerful Intel N100 compute module. 10. DFM and Prototyping: BOM creation (Mouser, Digikey/JLCPCB/PCBway/NextPCB). Tools: Altium Designer and KiCAD. I deliver native Altium Designer or KiCAD project files, including manufacturing-ready Gerber, BOM, CPL, and STEP. I also offer factory support. RECENT PROJECTS - nRF52840-based wireless impact detection system with BLE and LoRa communication between a bike and helmet node for accurate detection and reporting of motorcycle accidents in Europe. - BLE, IMU, and low battery consumption gym fitness tracker. - ESP32-based wearable device that reads photoplethysmography (PPG) signals from a finger sensor and displays blood pressure on an OLED screen. WHY DO CLIENTS WORK WITH ME? ⚫ Hardware products often fail because of poor component selection, a lack of professional follow-up with fabricators, and firmware incompatibility. I offer all three: hardware, firmware, and design for manufacture (DFM), ensuring compatibility and avoiding factory surprises by making sure all components I use are available for fabricators to source. ⚫ I help you in the follow-up process with the fabricator, ensuring I answer all engineering questions and, most importantly, guarantee a working final product. ⚫ I offer 2 free revisions. ⚫ Deep Technical Mastery: As a professional Electrical and Electronics engineer with 10 years’ experience in PCB design and firmware development, I handle complex challenges with precision, from complex high-speed and mixed-signal routing to robust firmware for wearables, robotics, and IoT. Send me a message sharing your rough idea, sketch, specs, or existing design, and I’ll reply to you instantly. Thanks Anthony.