William D. Profile

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5.0

(2 reviews)

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$100 USD / hour

san antonio,

united states

$100 USD / hour

It's currently 11:38 AM here

Joined March 23, 2007

0 Recommendations

William D.

@wdanford

5.0

(2 reviews)

3.8

100%

$100 USD / hour

san antonio,

united states

$100 USD / hour

100%

Jobs Completed

100%

On Budget

100%

On Time

N/A

Repeat Hire Rate

Experienced engineer hardware, firmware, software

Software: Asm & C real-time. FORTRAN, BASIC, C, PASCAL, Asm. Windows, MS Visual C++. Windows/MAC, CodeWarrior (C++, Pascal, Java). Buildroot, gcc make Test prog with CVI, LABWindows, VB. Port Linux to ARM custom platforms, device driver dev. Hardware drivers on x86 embedded (Qseven) platform. Hardware: Work with 6800, 6809, 68HC11, 68070, 68020. Embedded design 386EX, 6800, 6809, Hitachi H8/300, NEC, PIC, ARM, ARM Cortex. Asm & C prog of above for real-time, bare metal, FreeRTOS. FPGA design using ABLE, CUPL, proprietary IDE. Other PLD, CPLD and FPGA. PWB with P-Cad, PADS, Eagle, KiCad. Design VMEbus, DEC Q22 bus, STD bus boards. Design IEEE-488, Parallel, Serial. Design IrDA with Embednet stack. Low-band VHF design. Analog instrumentation design. Power control (SCR), power supply. Consumer, Industrial and Military. ATE with GenRad, Trendar, HP, Zentel. ATE with VXI / GPIB instruments, custom design. Web site: Database driven web sites, MySQL, php.

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Portfolio

The product was a next-generation based off its predecessor. The previous product had service life maintainability issues. The business model for this company was short-term rental of medical devices prescribed by a doctor for patient use. Thus the useful life needed to be several years (of repeated rentals).

Product design for manufacturability

I ported an existing HMI product from Windows CE to Linux

The problem observed in first units sold and installed was that the units died after just several months of operation. The HMI interface was for an industrial control system, had 24/7 up time.

Port Linux to existing ARM v5 HMI platform

Product design for manufacturability

Port Linux to existing ARM v5 HMI platform

Reviews

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Showing 1 - 2 out of 2 reviews

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5.0

€506.00 EUR

Replace 200 resistors on small PCBs

Delivered everything on time, and keeping me up to speed during the process, all good.

Electronics

Electrical Engineering

Electric Repair

Appliance Repair

Soldering

+7 more

João A.

@JoaoDiogoAmaral

•

2 years ago

5.0

$250.00 USD

API Integreation Into Home Page

Excellent communication, good understanding of project, worked efficiently and in a timely manner. Very clear step by step communication.

Closed User

@catchall768

•

15 years ago

Experience

Independent Consultant, Contract Engineer, San Antonio, Texas

Jan 2001 - Present

Contract Engineering design/development services for small and medium manufacturing firms and DOD contractors. Projects include commercial product hardware/firmware design/development, ATE systems development and Test Program development. Developed firmware for embedded application (H8/300, PIC, STM32). Developed application specific software for PC based system. Design to IEC 60601 standards for FDA requirements. Database driven web site development using MySQL scripted with php.

Thermon

Dec 2009 - Jan 2018 (8 years, 1 month)

Hardware / firmware design development for industrial control system modules and integrated controllers for power control of electrical heating systems, "Heat Tracing", in continuous flow production processes. Principle applications in petrochemical industry.

Frontline Systems, Inc., Conceptual Mindworks, Inc., Galatic Technologies, Inc.

Oct 1993 - Jul 2001 (7 years, 9 months)

System and board level redes for DOD contracts. Insertion of high-dens PLDs, FPGAs, other devices in older sys as replacement for obsolete devices. Replacement of older Micro-P (8085) with newer (386EX) & firmware conversion. Sub of the latest analog and digital families. PWB with PADS. Replacement of custom built subsys with newer commercial prod. Rehost of Test Prog from older sys to PC platforms as Windows apps. Source-code conv from Pascal, ATLAS & various BASIC to new versions of BASIC, C.