Copyright © Parallax Inc.
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PE Platform Setup v1.0
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11/2/2006
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Page 8 of 12
Build the Test Circuit
The circuit shown in Figure 4 and Figure 5 will provide a means of testing the Propeller chip’s I/O
pins as both inputs and outputs. If any of the checklist instructions do not work, go to
Troubleshooting entry (7) on page 12.
3
Build the circuit shown in Figure 4 and Figure 5.
3
Connect the 9 V battery
3
Disconnect the LED wire from (L, 14) in Figure 5, and plug it into (RED, 13) on the power
rail between the center and left prototyping breadboards. The LED should light. If it doesn’t
double check your wiring, and especially check if the LED is plugged in backwards.
3
Disconnect the wire from (RED, 13), and plug it into (RED, 12) on the leftmost power rail.
The LED should glow again.
3
Disconnect the LED wire from (RED, 12) and reconnect it to the Propeller chip’s P3 I/O pin.
For this, you’ve got a choice of (L, 4), (K, 4), or (I, 4).
Figure
4: Test Circuit Schematic
Figure
5: Test Circuit Wiring Diagram
