Hardware Reference
In-Depth Information
Solution
There are a number of nice LED matrices that allow you to control several LEDs via one
Backpack
.
To make this recipe, you will need:
▪ Breadboard and jumper wires (see
“Prototyping Equipment”
)
▪ Two 4.7 kΩ resistors (see
“Resistors”
)
The LED matrix is a 5 V device, but you can drive it from 3.3 V. Wire, as shown in
Fig-
ure 3-6
.
Figure 3-6. Wiring an i2c LED matrix
describes the difference between how Linux numbers the I
2
C buses (
0
and
1
) versus how
BoneScript numbers them (
1
and
2
). Let's see how your display shows up.
