Copyright © Parallax Inc.
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Application Note Title and Version
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11/2/2006
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Page 5 of 12
Figure 3: Wiring Diagram – Propeller DIP Plus Kit
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See it in color:
This file is available in color as a free pdf download from the Propeller Education Kit (32305)
product page at www.parallax.com.
Connection Testing
It’s important to eliminate all wiring mistakes before connecting power to the PE Platform. By
double-checking your wiring and running a few simple tests, you can in many cases catch a mistake
that might otherwise have caused your system not to work or even damage your components. To
start, let’s look at the design of these breadboards since they are integral to all of the circuits.
Wiring
Each socket on each 12-column × 26-row prototyping breadboard has a letter for the column and a
number for the row. For example, the 9 V battery’s positive terminal wire plugs into the center
breadboard’s (L, 1) (column L, row 1) and its negative terminal plugs into (L, 2). The 2 × 26 power
rails’ rows line up with the numbers on the prototyping breadboards. Red and black lines indicate the
column designation in the power rails. For example, the coordinates of the LED’s anode is (RED, 10)
and the coordinates of the top-left capacitor’s negative terminal is (BLACK, 1).
The red and black lines on the power rails also indicate continuity for power distribution. Unlike the
prototyping breadboards, which are grouped into 6-socket-wide rows each with a metal bracket
underneath, the power rails have only three metal brackets. A single metal bracket connects the entire
column of sockets adjacent to the black line. This typically serves as a common ground, and each
negative rail is connected to the battery’s negative terminal on the PE Platform.