28139 Parallax Inc, 28139 Datasheet - Page 55

• 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

Chapter 2: Create and Use Remote Applications
REUSABLE PROGRAMS
In this chapter, you will develop and test two different multi-purpose IR remote
application programs. You will test them on their own, and also with new Boe-Bot
applications. They will make all kinds of Boe-Bot IR remote programs possible with
much less programming. These application programs can also be used with many other
projects. Think about all the machines and inventions that have keypads. You can
design your own version of these inventions with an infrared detector and a universal
remote.
ACTIVITY #1: INTERPRETING THE IR MESSAGES
The key to making the pulse measurements you collected in the previous chapter more
useful is decoding. In the case of the messages the universal remote sends, decoding
means converting a series of pulse duration measurements into a single value that your
PBASIC program can use to make decisions.
In this activity, you will write programs that decode the PWM messages sent by the
infrared remote. You will also look for relationships between these decoded values and
the keys on the remote. If a relationship exists, it will make the remote control programs
much simpler. When it's easier to write remote control programs, you will be able to
create more powerful Boe-Bot applications with less work.
Decode
a: to convert (as a coded message) into intelligible form
b: to recognize and interpret (an electronic signal)
Source: Merriam-Webster Online Dictionary – www.merriam-webster.com