Often in the course of my work, I need a test capability that just isn't
covered by the off the shelf equipment that I have
available. To accomodate these cases, I designed and built this general purpose
test platform. An internal connector allows me to easily add or change an
interface board to measure or generate exactly the capability I need.
The devices provide this following as "full time available" hardware, which
is supplimented by the interface board:
- 8031 processor running at 14.745 Mhz
- 32K ROM containing operating system, and common library routines
- 32K of non-volatile RAM for application specific code and data storage
- RS-232 port for program download, and data upload
- Real-time clock with alarm
- Intel 8253, triple 16-bit timer/counter
- ADC0809 8-channel analog to digital convertor with adjustable reference
- 12 bits programmable digital I/O including 8031 T0/T1/INT0/INT1 signals
- 8 additional bits of digital control output.
- 1 additional bit of digital sense input.
- 500Khz, 1Mhz, 2Mhz and 4Mhz synchronized clocks.
- 20 character LCD display.
- 48 key keypad (salvaged from a scrapped logic analyzer).
By providing custom interface boards, utilitizing the above resources
as required, I can create a piece of test equipment customized to a particular
need quickly and easily.
Copyright 2013 Dave Dunfield.