untitled

Making the receiver circuit ...............................................................

The receiver circuit will eventually reside in Sam’s body, taking the signals

that your remote control unit sends telling Sam how to behave. Here are the

steps to build the receiver circuit:

1. Take two 830-contact breadboards and join them by inserting the tabs
   into the slots along the sides to make one large breadboard.


2. Place the HT12D (IC1), the LM555 (IC2), the L293D (IC3), the receiver
   module, and ten terminal blocks on the breadboard, as shown in
   Figure 13-18.

Wires from horn switchWires from transmit switch

Wires from start/stop switch

Antenna

Wires

from

speed

switch

Black wire

from

on/off

switch

Red wire

from

battery

pack

Figure 13-17:
Transmitter
circuit in
place.

Chapter 13: Sensitive Sam Walks the Line 321