Examples > Robot

Remote Control

This example is considered experimental, you will need to install the IR-Remote library by Ken Shirriff on your IDE for it to run, read the code for more information

If you connect a IR remote receiver to the robot, you can control it like controlling your TV set. Take a Sony compatible remote controller, map some buttons to different actions, and you can make the robot move around without touching it!

Hardware Required

  • Arduino Robot
  • Infrared sensor
  • cable to connect the sensor
  • Sony compatible remote control

Instruction

  1. Connect the IR sensor to TKD2 on the top board, using the cable provided.
  2. Fix the sensor on the board
  3. Upload the example, unplug USB and turn on power
  4. After the starting screen, use the remote control to send it commands
  5. Press the buttons you've coded to move the robot.
  6. You can see received signals and commands (if recognized) on the LCD.
  7. If you want to customize your commands:
    1. Press the buttons on remote control and write down the values showing up on LCD.
    2. Locate these lines in the example code:
      #define IR_CODE_FORWARD 0x2C9B
      #define IR_CODE_BACKWARDS 0x6C9B
      #define IR_CODE_TURN_LEFT 0xD4B8F
      #define IR_CODE_TURN_RIGHT 0x34B8F
    3. Change the values here to the ones you saw on the screen.

Try it out

Use the remote control with the robot

Code

/* 08 Remote Control

 If you connect a IR receiver to the robot,
 you can control it like a RC car.
 Using the remote control comes with sensor
 pack, You can make the robot move around
 without even touching it!

 Circuit:
 * Arduino Robot
 * Connect the IRreceiver to D2
 * Remote control from Robot sensor pack

 based on the IRremote library
 by Ken Shirriff
 http://arcfn.com

 created 1 May 2013
 by X. Yang
 modified 12 May 2013
 by D. Cuartielles

 This example is in the public domain
 */

// include the necessary libraries
#include <RobotIRremote.h>
#include <RobotIRremoteTools.h>
#include <ArduinoRobot.h>
#include <Wire.h>

// Define a few commands from your remote control
#define IR_CODE_FORWARD 284154405
#define IR_CODE_BACKWARDS 284113605
#define IR_CODE_TURN_LEFT 284129925
#define IR_CODE_TURN_RIGHT 284127885
#define IR_CODE_CONTINUE -1

boolean isActing = false; //If the robot is executing command from remote
long timer;
const long TIME_OUT = 150;

void setup() {
  // initialize the Robot, SD card, display, and speaker
  Serial.begin(9600);
  Robot.begin();
  Robot.beginTFT();
  Robot.beginSD();

  // print some text to the screen
  beginIRremote(); // Start the receiver
}

void loop() {
  // if there is an IR command, process it
  if (IRrecived()) {
    processResult();
    resumeIRremote(); // resume receiver
  }

  //If the robot does not receive any command, stop it
  if (isActing && (millis() - timer >= TIME_OUT)) {
    Robot.motorsStop();
    isActing = false;
  }
}
void processResult() {
  unsigned long res = getIRresult();
  switch (res) {
    case IR_CODE_FORWARD:
      changeAction(1, 1); //Move the robot forward
      break;
    case IR_CODE_BACKWARDS:
      changeAction(-1, -1); //Move the robot backwards
      break;
    case IR_CODE_TURN_LEFT:
      changeAction(-0.5, 0.5); //Turn the robot left
      break;
    case IR_CODE_TURN_RIGHT:
      changeAction(0.5, -0.5); //Turn the robot Right
      break;
    case IR_CODE_CONTINUE:
      timer = millis(); //Continue the last action, reset timer
      break;
  }
}
void changeAction(float directionLeft, float directionRight) {
  Robot.motorsWrite(255 * directionLeft, 255 * directionRight);
  timer = millis();
  isActing = true;
}
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