28139 Parallax Inc, 28139 Datasheet - Page 21

• 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

CountStartPulses.bs2 counts the number of low pulses that it receives with durations that
fall in the 1.95 to 2.85 ms range. Figure 1-8 shows what your Debug Terminal should
display after you have pressed a numeric key for a couple of seconds while pointing the
remote at the IR detector. The duration shown in the Debug Terminal for a sample start
pulse is 2562 µs. Although it's not exactly 2400 µs, it is well within
√
√
√
√
√
Enter and run CountStartPulses.bs2.
Point the remote at the bubble on the front of the infrared detector.
Press and hold one of the numbered keys ( 0 – 9 ) on the remote.
Make sure pulses in the 2.25 to 2.75 ms range are detected (that's 2250 to 2750
µs displayed in the Debug Terminal).
Make a note of the actual value of the start pulse for your remote here: _______.
If the value is different each time, make a guess at the average.
If the program does not detect the start pulse, make sure your remote is set to control a
SONY TV set. First, press the TV button on the remote, then try beaming your BASIC
Stamp another message. If that doesn't work, repeat the steps from Activity #1. Still no
luck? Check your IR detector's wiring, then check your program for errors.
Chapter 1: Infrared Remote Communication · Page 11
Figure 1-8
Debug Terminal for
CountStartPulses.bs2
+
/- 250 µs.