ABOUT



Zone 7 Engineering, LLC is an electronics engineering company based in Portland Oregon USA. We offer a comprehensive suite of services that covers project planning, PCB / circuit design, embedded firmware development, prototyping, and production-readiness. We specialize in crafting solutions that push the boundaries of technology. With a foundation built on excellence, innovation, and a commitment to client success, we are your go-to partner for bringing cutting-edge electronic systems to life.


Founder David Ashman, is a senior level electronics engineer with extensive experience in the design of digital & analog circuitry incorporating various microprocessors/DSPs, and the development of embedded C/C++ firmware. David and his small team of professionals design solutions that meet client requirements, schedule, and budget.



Zone 7 Engineering can assist customers in any of the following areas:

- Electronic prototyping and electronic product design

- Electronic circuit schematic design, PCB design, test, debug, and integration

- Embedded processor firmware design (drivers, application, and DSP algorithms), development, debug, and integration

- Initial project planning (specification writing, structuring, and system design)



Zone 7 Engineering has experience with designing electronics and embedded firmware for the following projects:

- 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 control



Summary of processors & tools regularly utilized:

- Processors: ST Micro STM32F0 / STM32F1 /STM32F3 / STM32F4 / STM32F7, Analog Devices BlackFin BF70x DSP, SHARC 210xx, 214xx, and 2156x DSP

- Embedded IDE tools: IAR EWARM, Analog Devices CrossCore Embedded Studio (CCES)

- Embedded IP libraries: Segger emWin GUI, Segger emFile FAT file system, SQLite, OBD Experts vehicle OBD-II, Micrium uC/OS-II RTOS, FreeRTOS, MicroDigital smxFS FAT file system, Closed Loop Design (CLD) USB Audio, Adaptive Digital Noise Reduction

- Interface: SPI, I2C, I2S, CANbus, UART, A/D, D/A, PWM, SDRAM, RGB TFT LCD, SAI, USB

- Wireless: uBlox NINA-B4 BlueTooth, SimCom SIM7500 LTE, uBlox MAX-M8 GNSS, Sierra Wireless BC127 Bluetooth, Telit HE910 3G, Linx Technologies GNSS / GPS, Roving Networks RN171 WiFi, Atmel ATWINC1500 WiFi, TI CC1101 sub-1GHz ISM band, MicroChip RN4020 Bluetooth Smart / Low Energy (BLE)

- Schematic capture: OrCAD

- PCB CAD software: PADS and Altium

- Drawing tools: AutoCAD LT

- Analog simulation tools: CircuitLab

- Version control: SubVersion and GIT



David's education background:

Master of Science (M.S.), Electrical Engineering

Johns Hopkins University

Digital Signal Processing concentration

1995 - 1999


Bachelor of Technology (B.Tech.), Electrical Engineering

Rochester Institute of Technology

1987 - 1990


Associate of Science (A.S.), Electrical Engineering Technology

State University of New York at Alfred

1985 - 1987​