Datasheet

Page 118· Applied Robotics with the SumoBot
Figure 3-16 Sensors and Indicators Built on the Breadboard
Building and Testing the Side-Mounted IR Object Detector Circuits
Figure 3-17 shows schematics of the side mounted IR LED and IR receiver pairs that
comprise the left and right side object detectors. These detectors have the essentially the
same components as the ones connected to the X8/X9 headers. A 470 Ω resistor has
been added to the IR receiver outputs to prevent problems that can occur if you
accidentally try to send a signal to P0 or P1. P0 and P1 should always be inputs,
receiving signals from the IR receiver output pins.
Parts Required
(2) IR LEDs
(2) IR LED standoffs
(2) IR LED light shields
(2) IR detectors
(2) Resistors - 470 Ω (yellow-violet-brown)
(2) Resistors - 220 Ω (red-red-brown)
(7) Jumper wires
√ Build the circuit shown in Figure 3-17 with the help of the wiring diagram in
Figure 3-18.
IR Object Detector
(Right Side)
IR Object Detector
(Left Side)