David Croyle Email & Phone Number

Portland, Oregon Area

Design and deployment of back-office communication systems and infrastructure.

Dupont Washington, Then Hillsboro, Oregon

Design and development of custom Silicon Validation/Debug software (silicon and software debugger), with specializations for chip internals.

Design and implementation of Silicon Factory Automation systems (5 years)Design and implementation of military command and control hardware and software under the ADEA and ATCCS programs. Held a US DOD Secret security clearance.

Software Technician/Engineer – Designed and implemented variable-speed stepper motor control firmware in i8748 microcontrollers; Proof-of-Concept "Loader" User-Interface and Motion Control software; production Video Display Unit software controlling all Loader, Sample Information Collection, Result Display, and Diagnostic Features; and Data Management System serial interface for use in the Monarch InVitro Chemistry Analyzer. i8048 Assembly Language, i8080 Assembly Language, PL/M, and Pascal.

Spokane, Washington Area

Hardware/Software Designer – Designed & Built numerous Custom Electronic Weighing Systems and Accessories using Load Cells for Nuclear Fuel Rod weighing, Truck Scales, Cattle and Livestock Scales, Tank Weighing Systems, replacements for Mechanical Scales in the Kaiser Mead and Trentwood Aluminum Facilities (Washington) and Hanna Nickel Smelter (Oregon), Overhead Crane Scales (Battery Operated), Automated Weighing Scales for production lines (Aluminum Sheet, PVC Pipe Source Material and QC, Home Insulation), Food Packaging Scales (U.S. Macaroni), Small Aircraft Per-Wheel weighing scales, and Custom Pressure Monitoring Systems for Fertilizer Spray Vehicles.· Hardware and Software Design, including noise and vibration cancellation.· Fixed faulty Bell Labs design to eliminate "noisy" (+/-1) values by adding pulse train synchronization to normalize the readings. · Designed and built in-house replacement for Bell Labs systems.· Designed hand-held data input controls, and large-readout displays.· Designed and hand-assembled a long series of one-off customer modules to meet customer requirements. Manual Board Tapeout (4x), optical reduction (external vendor), and board manufacturing (in-house).Started with discrete CMOS logic and Analog modules, later introduced i8748 microcontrollers to more-readily enable special features like parts-counting and accumulating scales.

Computer Science, 4.0

Computer Science, 4.0

On-site CS courses by Professor Gage; Math by Professor Carlson; guidance by Professor Thayer

Computer Science & Electrical Engineering, 3.95

Remote/Video courses

Computer Science

Remote Course

Robotics Course

Remote Course

Electronics