Scoping Out the Schematic .........................................................................
There are actually two breadboards to assemble in this project: a transmitter
circuit and a receiver circuit. Take a look at the schematics for these two in
the following sections, along with helpful tips for reading them.
Transmitting at the speed of light ....................................................
The transmitter is what you use to operate the go-kart. The transmitter cir-
cuit is shown in Figure 11-2.
Here’s the gist of what’s going on:
VR1is a voltage regulator that takes the 6 volts supplied by the battery
pack and converts it to 5 volts, the maximum voltage specified for the
decoder (IC1).
The capacitor (C1)that’s placed between the output pin and the ground
pin of the voltage regulator prevents any oscillation(wiggling around) in
the output voltage of the regulator.
6
2
1 8
4
5
3
B1
B3
B2
IC 1
7
LED 1
R1
X1
+
V- VR1
VIN
VOUT
C 1
+
Figure 11-2:
The
schematic
of the
transmitter
circuit.
Chapter 11: Controlling a Go-Kart Infrared Style........................................................
