Motion Controllers
Designed and implemented the firmware for several different models of motion controllers, which featured custom command sets, front panel JOG-position buttons and an on-board motion control programming language. Development was done in C++ (with some assembly language routines) using an object oriented implementation. The controllers featured serial port and GPIB communications, digital and analog I/Os, and direct control of stepper or servo motors.

Encoder/Counter
Designed and implemented the firmware for an encoder/counter unit, used to track positions in motion control and other systems. The unit featured LCD display of up to six channels of position information and a serial port interface to a host computer.

GPIB Interface
Designed and implemented the GPIB communications section of a programmable attenuator, featuring a bus interface to a Microchip-PIC processor and software management of the GPIB controller IC. Functions included device addressing, interrupt driven I/O and serial poll response.

Board-level Design Capability
Board-level design, schematic capture (Protel-CAD), and debugging. Intel processors, Microchip PIC processors, I2C-bus devices, ROM and RAM, interrupt controllers, UARTs, GPIB and motion controllers, data acquisition and I/O ICs. Design, implementation and debugging of programmable logic devices (PLDs) including AMD-MACH family, standard PALs, PEELs, etc.