UART88 with edge displays

UART CHIP 14469P

16 OUTPUTS
What realy differentiates this model, is the edge display. A row of leds, totally on the motherboard, forms the unboard display. This board was cheap and effective.

Address led at far right

Seven orange outputs

Sixteen inputs in real time

RULERMARGIF

UART1

MAIN BOARD

UART27 MAIN BOARD
Showing simple edge display

UART2
Buffed with an orbital sander

Home made heat shield (Not needed)
The two red wires go to led on the front panel. I was experimenting with a current indicator. A trace was cut and a series power resister installed just to drop about a half a volt under normal usage. a 100 ohm resister is in series with the indicator LED, just in case their was ever a DEAD short.

A current consumption indicator was proven not neccessary with the later usage of relays instead of hexfets. Controled equipment grounds became epuipment ground RETURNS and could be kept away from controller card voltages.

At home, where I built these things, I have an analog current meter as part of my hook-up jeg. With relays the current draw at home is the same as the current draw in the field.
RULERMARGIF

UART3

Mixture of HEXFETS and BIPOLARS
(Base resisters required)

CognizantWire Systems