Based in Portland Oregon USA, I am a senior level electrical engineer with over 25 years experience in the design of circuitry incorporating various microprocessors / DSPs, and development of embedded C / C++ firmware. Being a full-time freelancer, I specialize in creating intelligent control electronics through the use of wired and wireless sensors. I have a Master of Science degree in Electrical Engineering with a digital signal processing concentration. I can assist clients in any of the following areas:- Digital and analog electronic circuit schematics, PCB design, and test.- Embedded microprocessor firmware design and development (drivers, application, and DSP algorithms).- Electronic prototyping and transition to product commercialization.- Initial project framework (specification writing, structuring, and system design).Projects I regularly help clients with:- Hand held and remote meters- OBD vehicle electronics- Wired and wireless sensors- High performance audio capture / processing / reproduction and audio CODEC- Medical wearable devices- Low power battery driven electronics - IoT device to server electronics and firmware (MQTT, HTTP / HTTPS / JSON protocols)- Device to device electronics and firmware (BLE, ISM, WiFi)- BLDC and BDC motor controlSummary of processors & tools I use:- Processors: ST Micro STM32F0 / STM32F1 / STM32F4, Analog Devices SHARC 210xx and 214xx DSP, MicroChip dsPIC33 / PIC16 / PIC18- Embedded IDE tools: IAR EWARM, Analog Devices CrossCore Embedded Studio, MicroChip MPLAB-X, Keil uVision- Embedded IP libraries: Segger emWin GUI, Segger emFile FAT file system, SQLite, OBD Experts vehicle OBD-II, Micrium uC/OS-II RTOS- Interface: SPI, I2C, I2S, CANbus, UART, A/D, D/A, PWM, SDRAM, RGB TFT LCD- Wireless: SimCom SIM7500 LTE, uBlox MAX-M8 GNSS, Telit HE910 3G, Linx Technologies GNSS / GPS, Atmel ATWINC1500 WiFi, TI CC1101 sub-1GHz ISM band, MicroChip RN4020 Bluetooth Low Energy (BLE)

Responsible for designing numerous digital circuit projects for US Navy passive sonar systems using SHARC DSPs, and/or Xilinx Virtex and Spartan FPGAs. Development, debug, and test of VHDL code and embedded C firmware for use in own circuit designs. Lead projects while maintaining schedule, cost, and good customer relations. Provide mentorship for junior engineers.