28139 Parallax Inc, 28139 Datasheet - Page 120

• 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

Here's how it will work:
IrRoamingWithSpeedControl.bs2 already uses infrared to check for obstacles between
each pair of pulses to the servos. The key to detecting incoming messages from the
remote is to check the IR detectors before using the
objects. If the program checks to find out if IR is detected before checking for obstacles,
it can easily detect an incoming message from the remote. Here are the steps that should
be executed inside the main routine's
Example Program: RoamingWithRemoteSpeedControl.bs2
Follow these steps to write the program:
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By pressing the any button, you will interrupt the Boe-Bot's roaming.
Then, you will use the numeric keypad to type in the new percent-speed.
To make the Boe-Bot resume roaming at the new speed, press the ENTER button.
Before testing for objects with the Boe-Bot's IRLED headlights, test the IR
detector's output pin to see if a signal is coming from the remote.
Check the IR detectors.
Use
Open IrRemoteKeypad.bs2.
Save a copy of it as RoamingWithRemoteSpeedControl.bs2.
Add these declarations to the variables section:
' Boe-Bot control variables.
irDetectLeft
irDetectRight
speed
You can copy and paste to transfer sections of code from your version of
IrRoamingWithSpeedControlYourTurn.bs2 into RoamingWithRemoteSpeedControl.bs2.
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IF…THEN
If the IR detector is sending a low signal it means an infrared message is
coming in. Call the
If the IR detector is sending a high, move on to the next task, which is
object detection.
to control the servo directions and speeds.
VAR
VAR
VAR
Bit
Bit
Byte
Process_Ir_Message
DO…LOOP
:
FREQOUT
' IR detector bit storage
' Speed control variable
subroutine.
command to look for