28139 Parallax Inc, 28139 Datasheet - Page 41

• 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

Go back to Table 1-1 and take a look at the measurements stored in the
1 through 4 keys.
measurements to 500, there are only four possible combinations:
This is definitely enough information to write an
that guided the Boe-Bot through whisker and IR navigation:
Example Program – 2BitRemoteBoeBot.bs2
You can press and hold the 1 , 2 , 3 , or 4 keys to select from one of four directions:
forward, backward, rotate right, rotate left. These directions also work with the CH+ , CH- ,
VOL+ , and VOL- keys, which works nicely because those buttons point in the forward,
backward, right, and left directions on most remotes.
√
√
√
√
√
(1) Both
(2)
(3)
(4) Both
Add
Remove all the
Remove all the
into
Remove the
Use the pulse information in Table 1-1 to make
the
combinations of values that
time(1)
time(1)
IF (time(1) < 500) AND
ELSEIF (time(1) < 500) AND (time(0) > 500) THEN
ELSEIF (time(1) > 500) AND (time(0) < 500) THEN
ELSEIF (time(1) > 500) AND (time(0) > 500) THEN
ENDIF
PULSOUT Duration
time(0)
PULSOUT 13, 850
PULSOUT 12, 650
PULSOUT 13, 650
PULSOUT 12, 850
PULSOUT 13, 850
PULSOUT 12, 850
PULSOUT 13, 650
PULSOUT 12, 650
FREQOUT 4, 2000, 3000
time(1)
time(1)
is less than 500, but
is greater than 500, but
FOR…NEXT
Focus on
and
and
and
DEBUG
PULSIN
time(1)
time(0)
time(0)
commands.
loop that displays the pulse durations.
commands except the ones that store time measurements
time(1)
arguments for a maneuver based on four possible
.
time(0)
are less than 500.
are greater than 500.
(time(0) < 500) THEN
time(0)
before the first
time(0)
and
Chapter 1: Infrared Remote Communication · Page 31
and
is greater than 500.
time(0)
time(1)
IF…THEN
is less than 500.
DO
IF…THEN
.
.
might store.
statement similar to the ones
If you compare the pulse
statements that choose
time
array for the