CHAPTER 13 ■ SOLDERLESS BREADBOARD SETUP
Obtaining 9 V Battery Snap Connectors
Although you could attach the battery to the breadboard using alligator or hook clip jumpers, a 9 V battery
snap connector is preferable because it’s less likely to slip off. I highly recommend a solid, rigid 9 V connector
rather than an ordinary, flexible connector (see Figure 13-2). The flimsy connectors are difficult to remove
from the battery and tend to wear out quickly, often ripping or falling apart. See Table 13-1 for a supplier of
rigid clips.
Figure 13-2. Solid (top) versus flimsy (bottom) 9 V battery snap connectors
Table 13-1. Solid, Rigid 9 V Battery Snap Connectors
Supplier Part Number Price Description
Jameco 216452 $0.35 6-inch Safety
Mouser 123-5006-GR $0.45 6-inch Molded
Digi-Key BS6I-MC $0.71 6-inch I-Style Molded
Mouser 534-81-8TB $0.82 8-inch T-Style Molded
Connecting Power to Binding Posts
You could push the ends of the 9 V snap connector’s wires directly into the desired breadboard holes.
However, the battery often falls when the breadboard is moved, causing one or both 9 V wires to pull out of
their respective holes.
A better solution is to connect the 9 V wires to the binding posts (if available on your breadboard).
Obviously, the black wire connects to the black post, and the red wire connects to the red post. Any red post
will do if you have more than one.