28139 Parallax Inc, 28139 Datasheet - Page 208

• 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

Page 198 · IR Remote for the Boe-Bot
The reason the way the code is written makes such a big difference in IR remote
transmission is because the calculations are performed between
commands.
PULSOUT
The
loop shown above, which takes more than a millisecond, throws the
FOR...NEXT
timing off so much, that this text's example programs can no longer decode the messages.
On the other hand, the calculation
takes about 500 µs,
remoteCode.BITX * 300 + 300
which is really close to the 600 µs rests between pulses shown in Figure 1-4 on page 6. It
works, both with the Boe-Bot and SONY TVs.