276Tibbo Project System (TPS)
© Tibbo Technology Inc.
Several C1 Tibbits implement various sensors: temperature, humidity, pressure, etc.
These need both the ground and +5V power lines, which are provided by the "M"
Tibbit #00-3. This Tibbit propagates ground through pin 5 and outputs +5V power
through pin 4:
7.2.6.2
C2 + M2
C2 and M2 devices are interconnected by eight interface lines.
C2 Tibbits have dedicated ground, +5V, and +15V pins. Here is the illustration of
how the ground line gets used. Tibbit #19 incorporates the DB9 connector, which
requires the ground line. Since C2 devices have ground pins, there is no need to
waste one of the available eight interface lines, so all lines can be put to good use
and this comes handy for Tibbit #02 (RS232/422/485 port) that utilizes all eight
lines.
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