(2008) Embedded-Linux product with PDA (small-screen) web interface

• Publishes sensor data via HTML, MODBUS-TCP/IP, SOAP, other interfaces.
• Continuous real-time collection, averaging, & data logging (10^6 samples).
• Real-time display updates, including live data-graphing.
• Configured via web-interface.
• Implemented using C++ Servlets, C, AJAX, JAVASCRIPT, HTML, CSS.
• MODBUS-TCP/IP diagnostic GUI tool written in JAVA

(2008) GUI (Graphical User Interface) display demo

• 21 pages of dynamic user-adjustable machine parameters.
• Browser-based (no display configuration or licensed software required).
• Continuous real-time updates using AJAX/SOAP.
• Implemented with JAVA Servlets, AJAX, JAVASCRIPT, HTML, CSS.
• On-screen debugging, trace, & info features.

(2007) JAVA GUI (Graphical User Interface) program for phase-controller product.

• RS422 multi-drop serial-communications with target.
• Dynamically reconfigurable 1-page parameter display.
• Real-time display of ~88 parameters (~35 user-adjustable).
• XML storage of initialization/configuration values.
• Security features & change-logging (value/timestamp/username).

(2006) 200 amp phase-controller product enhancements.

• PLC-compatible DEVICENET communications (500 Kbaud), in ``C''.
• Firmware upgrades via RS422 port.
• Directly program 1-wire EPROM device.

(2006) Control 4-servo-machine via MODBUS communications.

• Precision positioning & velocity control.
• Written in real-time multi-tasking BASIC programming language.

(2005) ``C'' program to capture & log legacy-LAN messages to SQL database.

• In 5 plants internationally, each logging ~100,000 messages/day.
• Compatible with Microsoft SQL-server, MYSQL, POSTGRESQL.

(2001-2004) Design/program/manufacture/install ~130 industrial control systems.

• Control fiberglass textile winders in plants in China & Taiwan.
• Customer says "most successful startup ever" & staff "no longer remembers how to open the cabinets" due to system reliability.

(2001-2003) Design/program/manufacture multichannel 200 amp Phase-Controller product.

• OS + drivers implemented in Motorola HC12 assembly-language.
• RS422 multi-drop serial communications @ 19.2 Kbaud.
• 1-wire EEPROM (for per-position config settings)
• uP EEPROM (for per-unit calib & config settings)
• GUI interface initially written in TCL/TK, then later in JAVA.

(1999) Compiler in ``C'' to enhance real-time multi-tasking BASIC programming language.

• Written in Bison, Yacc, C.

(1999) Design/wrote OS + drivers for DC vehicle motor control.

• Motorola HC11 assembly-language, linked to another programmer's supervisory ``C'' program.

(1998) MODBUS communications driver for real-time multi-tasking BASIC programming language.

• Implements general-purpose industrial communications standard.
• Z80 / Z280 assembly language.

(1996) Add IEEE floating-point support to real-time multi-tasking BASIC programming language.

(1986) Design/program/manufacture microprocessor-based RIO (Remote Input/Output) board

• Intel 8096.
• Controlled by multidrop RS422 serial link.
• ~1550 units fabricated (still being shipped). Most still in operation.

(1986) Design/program/manufacture PCC (Process Control Computer) industrial microprocessor board.

• Zilog Z280, assembly-language.
• ~1125 units fabricated (still shipping in 2008).
• As of 2009, over $1 billion product/year is manufactured by machines controlled by this board.

(1983) Developed real-time multi-tasking BASIC programming language.

• allows end-users to control complex machines.
• runs on Zilog Z80/Z280.

(1982) Design/program control logic board for textile winder application (Z80 2.5 MHz CPU).

• Microprocessor controls AC-motor 6-step inverter, generating all power transistor switching signals.
• All-digital control of all frequency & voltage control functions.
• Simultaneously controls customer's manufacturing machine.
• ~700 units fabricated. ~100+ units still in operation, internationally.

(1976..1985) Cross-assemblers in Pascal & ``C'', for Zilog Z280, Z80, & Intel 8096/8097.

(1976) Design/program control logic board for textile winder application (Z80 1.0 MHz CPU).

• ~500 units fabricated, used internationally.

Educational summary:

• (2007) Embedded Linux Developers Conference boot camp (Montavista).
• (1994) DEVICENET Developers Training Course (Allen-Bradley).
• (1993) Dynamic Analysis of Adjustable Speed Drives, IEEE/SJSU.
• (1985) VLSI design course, UC-Santa Cruz.
• (1984) Motion Control Systems course, IEEE/Jacob Tal.
• (1984) VLSI design tools course, UC-Santa Cruz.
• (1976) B.S. Astronomy (same as Physics), California Institute of Technology.