28139 Parallax Inc, 28139 Datasheet - Page 64
![KIT REMOTE IR FOR BOE-BOT W/TEXT](/photos/8/99/89978/mfg_28139_sml.jpg)
28139
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
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Page 54 · IR Remote for the Boe-Bot
Figure 2-5 shows a timing diagram of the signal the IR receiver sends to the BASIC
Stamp I/O pin as it indicates when it does and does not detect 38 kHz infrared transmitted
by IR remote.
Figure 2-5: Command Execution Timing in Relation to Incoming IR Pulses
The gray boxes over the timing diagram show the beginning and end of each PBASIC
command. Keep in mind that the durations of the low signals are what contain the
information. There's a 2.4 ms start pulse, followed by a 0.6 ms data bit 0 pulse. 0.6 ms is
a binary-0. The next data bit 1 pulse is low for 1.2 ms, which means it's a binary-1. The
bit 2 data pulse is 0.6 ms again, so it is also a binary zero.
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