28139 Parallax Inc, 28139 Datasheet - Page 19

• Manufacturer Part Number: 28139
• Description: KIT REMOTE IR FOR BOE-BOT W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28139

• Accessory Type: IR Remote
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Boe-Bot®
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

The IR Detection Circuit
It only takes one IR detector to capture messages from the IR remote (see Figure 1-6).
Measuring Start and Data Pulses
The
complementary command called
Pin
determine whether the pulse is a high pulse (1) or a low pulse (0).
pulse duration measured by the BASIC Stamp.
√
PULSOUT
is, of course, used to select the I/O pin for measuring the pulse.
P9
Build this circuit on your Boe-Bot's prototyping area.
PULSIN Pin, State, Variable
The numbers (1, 2, 3) on the IR detector are also shown on the pin map in Figure 1-2.
You can use this as a guide to make sure the IR detector is correctly wired.
command you've been using to send pulses to the Boe-Bot servos has a
220
Ω
Vdd
Vss
1
2
3
PULSIN
. The syntax for the
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
Chapter 1: Infrared Remote Communication · Page 9
X2
X3
Vdd
Vin
PULSIN
Vss
Variable
command is
State
Figure 1-6
IR Detection
Circuit
is used to
stores the