William D. Profile

KEŞFEDİN

Circuit Board Layout

Digital Electronics

Electronic Design

Electronics

PHP

5,0

(2 değerlendirme)

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E-posta başarılı bir şekilde doğrulandı.

$100 USD / saat

san antonio,

united states

$100 USD / saat

Şu anda burada saat 4:05 ÖS

Mart 23, 2007 tarihinde katıldı

0 Tavsiye

William D.

@wdanford

5,0

(2 değerlendirme)

3,8

100%

$100 USD / saat

san antonio,

united states

$100 USD / saat

%100

Tamamlanmış İş

%100

Bütçe Dahilinde

%100

Zamanında

Mevcut değil

Tekrar İşe Alınma Oranı

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.

PHP Developers freelancerlarından United States içinden olanlarının tümünü görün.

William D. ile işiniz hakkında iletişime geçin

Detayları sohbet üzerinden tartışmak için giriş yapın.

Portföy

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

Değerlendirmeler

Değişiklikler kaydedildi

2 değerlendirme içinden 1 - 2 arasındakiler gösteriliyor

Değerlendirmeleri filtreleme kriteri:

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 daha

João A.

@JoaoDiogoAmaral

•

2 yıl önce

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.

catchall768

@catchall768

•

15 yıl önce

Deneyim

Independent Consultant, Contract Engineer, San Antonio, Texas

Oca 2001 - Şu anda

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

Ara 2009 - Oca 2018 (8 yıl, 1 ay)

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.

Eki 1993 - Tem 2001 (7 yıl, 9 ay)

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.