• Lego Mindstorms NXT IR Receiver Sensor
The NXT IRReceiver Sensor receives signals from a LEGO Power Functions IR remote control, decodes the information in the remote control signal and makes this available to an NXT program. The information received can be directly used to control NXT motors or your program can use the input data to control other functions within your program.
 
The IRReciever Sensor will receive signals from the LEGO Power Functions IR Speed Remote Control and the Power Functions IR Remote Control.
 
 
Power Functions IR Speed Remote Control Item #8879 Power Functions IR Remote Control Item #8885
Programming
 
MINDSTORMS NXT-G Programming
 
NXT-G programs can use the sensor data and wire it directly to motor blocks to create a very simple R/C program.
 
 
This block returns the latest remote control settings received from the remote each time you execute the block in your program. Each Remote Control has 2 motor controls, Red and Blue which are matched on the block data hub.
 
You must drag at least one output data wire from this block's data hub to another block for any information to be sent.
 
Display Settings
 
Image of block
 
The number shows which of your NXT's ports are connected to the IRReceiver. You can change this number in the configuration panel if you need to.
The block's data hub will open automatically when the block is placed in the work area. At least one data wire must be dragged from the block's output plug to another block's data hub. (See the Data Hub section below for more information.)
 
Configuring the IRReceiver Block
 
Image of configuration panel
 
Port: Choose the port where your IRReceiver is plugged in. By default, the block will be set to port 4 for an IRReceiver. You can change this selection if you need to.
Channel: Chose the channel to match the channel selected on the LEGO Power Functions Remote Controller (1 - 4).
 
IRReceiver block Data Hub plugs
 
Image of block
 
You must click on the Data Hub to open it as shown.
 
The port that the IRReceiver is connected to
The Power Functions Remote Control channel number (match channel selected on the remote control)
The Red Motor Direction (Remote Control red channel)
The Red Motor Power
The Blue Motor Direction (Remote Control blue channel)
The Blue Motor Power
The Red Motor Brake
The Blue Motor Brake
The Red Control setting
The Blue Control setting
 
This chart shows the different characteristics of the plugs on the IRReceiver data hub:
 
Plug Data Type Possible Range What the Values Mean
Port Number 1 - 4 1 = Port 1, 2 = Port 2, 3 = Port 3, 4 = Port 4
Channel Numeric 1 - 4 1 = Channel l, 2 = Channel 2, 3 = Channel 3, 4 = Channel 4
Direction Logic True/False True = Forwards 
False = Backwards
Power Number 0 - 100  
Brake Logic True/False True = Brake 
False = Coast
Setting Number -7 - +7 Remote speed control setting
 
Other Programming Environments
 
IRReceiver Register Layout
 

Address

Type

Contents

00 – 07H

chars

Sensor version number

08 – 0FH

chars

Manufacturer

10 – 17H

chars

Sensor type

18 – 3DH

bytes

Not used

3E, 41H

chars

Reserved

42H

byte

Motor 1A control

43H

byte

Motor 1B control

44H

byte

Motor 2A control

45H

byte

Motor 2B control

46H

byte

Motor 3A control

47H

byte

Motor 3B control

48H

byte

Motor 4A control

49H

byte

Motor 4B control

 
 
The Motor 1A/1B/2A/2B/3A/3B/4A/4B control fields indicate the power control for motors 1A through 4B. The number 1/2/3/4 is decoded from the remote controls selected channel. The letter A/B indicates left (Red) or right (Blue) control, A – left, B – right.
 
The following range values will be returned; -128, -100, -86, -72, -58, -44, -30, -16, 0, 16, 30, 44, 58, 72, 86 and 100. -128 is returned to signal motor brake.
 
The IR Receiver can be programmed using any of the available programming languages including NXC, RobotC and LabVIEW.
 
These and other HiTechnic sensor programming blocks are available from the downloads page.
 
Downloads

 

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Lego Mindstorms NXT IR Receiver Sensor

  • Brand: HiTechnic
  • Product Code:Hitechnic-Infrared-Receiver
  • Reward Points:60
  • Availability:In Stock
  • रo 6,280.00

  • Ex Tax:रo 6,280.00
  • Price in reward points:6280

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Tags: NXT, Infrared, Receiver, Sensor, Lego, Mindstorms

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