Presentation of Qualifications
 
for
 
Mark J. Samarin
 
of
 
MJS Consulting, Inc.
 
3502 Lewis St
Gig Harbor, WA  98335
(253) 858-6844

Master of Science in Electrical Engineering

CALIFORNIA STATE UNIVERSITY, 1990

SACRAMENTO, CA

Bachelor of Science in Computer Engineering

CALIFORNIA STATE UNIVERSITY, 1987

SACRAMENTO, CA

Hardware Design

• Experience with various microprocessors: 80x86, 680x0, Z180/80, 805x, 680x, 6811, PICs, etc.
• Sensor Interfaces
• Analog Conversion
• Custom Networking
• PLD design
• Power Conversion
• Battery-Powered Design
• Design for Manufacturing
• Design for cost-reduction

Embedded Software Design

• Embedded O.S. Design
• Microprocessor Emulation
• I/O Driver Design
• Real-Time Process Control
• Functional Test Design
• Database Design

Software Languages

• Native: Z80/x80, 80x86, 681x, 680x, PIC
• C++
• FORTRAN V, IV
• PLD Design Languages
• BASIC
• PASCAL

Electronics Designer and Consultant - MJS Consulting, Inc - Gig Harbor, WA - 9 yrs

Embedded design and consulting company specializing in product prototype design and manufacturing solutions  

• Product design and development of electronic and software products
• Establishment of manufacturing capabilities to meet client production needs
• Employing new technologies as they come available. for improved performance and cost-effectiveness
• Expansion into foireign suppliers and markets

Electronics Engineer - Z-World Engineering - Davis, CA - 3 yrs

Sells Z180-based microcontrollers (single-board computers) to various customers, mainly targeting OEM and large company sales. The product line includes a proprietary C embedded compiler for use with own controllers. 

• Designed stand-alone controllers, expansion I/O boards, and test hardware.
• Designs included all layout, routing, and CAM for PCB manufacture.
• Extreme attention paid to reducing product cost and manufacturability.
• Managed product development from design through manufacture.
• Developed working relationships with local parts distributors and assembly houses.
• Was a major contributor in success of company where yearly sales have grown from $1.5M to over $7M in just three years.

Software Engineer - Motorola GEG - Scottsdale, AZ - 2 yrs

Communications sector: It's purpose is to develop sophisticated secure communications devices for U.S. government agencies and other NATO agencies. 

• Real-time embedded operating system design for MC68HC11 in secure telephones.
• Worked independently, resulting in significant reduction in staff cost.
• Designed communications interfaces between multiple encryption coprocessors.
• Developed comprehensive test plans to ensure solid working products.
• Completed a six-month training program at Motorola focusing on software engineering principals and concurrent engineering teams.

Programmer/Analyst - Sacramento Co. Waste water Plant - Elk Grove, CA - 2 yrs

A fully automated water treatment plant responsible for processing the majority of the county's waste water.

• Designed real-time process-control software in FORTRAN and Assembly language.
• Included much process control system core software troubleshooting.
• Designed miscellaneous hardware including several unique conversion circuits with F/V and A/D conversion techniques.

Programmer/Analyst - Ca. Dept. of Water Resources - Sacramento, CA - 1 yr

A state agency: Responsible for monitoring state water supplies. 

• FORTRAN V data-base programming on a Data General MV1000 mini-computer.
• Created custom data bases and user-interfaces.

Ø 3-Board Process Control System

Hardware redesign of outdated (1978) control system for the Sacramento Municipal Utility District (SMUD) Geothermal plant in Middleton, CA. The system consisted of three separate modules interacting in 160 separate control loops. Included A/D, D/A, isolated AC relay control, RS-485, lamp drivers, optically- isolated and high current digital design. Improved overall system quality by reducing power consumption to 25% and improving manufacturing ease. Reduced system cost by reducing IC count using programmable logic devices.

Software included visual programming package allowing users to draw logic diagrams which are automatically translated into Z80 native code and burned directly into system.

 

Ø PWM Interface Board

PIC controller based design of interface board for the high-resolution acquisition of linear position transducer PWM data as well as A/D conversion. Included PIC software design in assembly and master controller drivers in C. Expansion software written to provide a very open-ended command driven interface.

 

Ø Custom RS-485 Triple Repeater Module

Custom design for integration into an industrial apparatus for the laser-cutting of contoured metal. Allows one RS-485 node to communicate with up to 3072 other nodes. Performed design, managed manufacturing, and delivered working product to customer for immediate use. Managed assembly and production testing of units for customer to assure quality and expedite delivery.

 

Ø Microwave Power Supply Control System

Microcontroller hardware and software design for process control in microwave power supplies used in silicon fabrication systems. Included hardware design of a 2-board system performing a multitude of system tasks including: 10-bit A/D conversions, PWM D/A conversion, opto-isolated digital, RS-232, LCD interface, AC/DC conversion, SCR conditioning, zero-cross detect logic, etc.

 

Ø Optical Lens Bonding Machine Software

Embedded software redesign C for Optical lens bonding machine. Included background tasking for the control of pneumatic valves and sensor interfaces. Integrated software with other consultant's work. Also included stepper-motor and vacuum fluorescent display control.

 

Ø Keytrackerä Inventory Tracking Machine

Designed hardware and software for commercial inventory tracking machine now sold as a commercial product by Inventory Science Systems, Inc. Includes battery-powered hardware design, custom data compression, high-speed keyscanning, and complex error recovery. MJS Consulting also provided injection molded case design, custom key design, and managed initial production.