Program the Remote Control

This video goes over how to program the remote, but you still need to go through the lesson!

Right before void setup(), include the Smart Inventor library.

#include <SmartInventor.h>

Inside void setup(), enter the code below so you can actually use the remote control.

SmartInventor.TVRemoconUse();

Make sure to include the baud rate so there is serial communication with the Smart Inventor Board.

Serial.begin(57600);

Baud rate review time! This function creates a high-transfer baud connection between the remote control and the Smart Inventor Board. A higher baud number means the board will process information faster, but there’s also a higher chance for errors. A lower baud number means the board will process information slower, but there will also be less of a chance for errors.

Baud rates range anywhere from 300 to 250000. Make sure that your baud rate is a number that is found within the drop-down menu in the lower righthand corner of the serial monitor.

Include a delay of 500 milliseconds in void setup() so the Smart Inventor board can check for entries from the remote control.

delay(500);

You can move on to void loop() now! Create a variable named keyData to represent data being read from the remote control. This variable will also store information about the last button that was pressed.

int keyData = SmartInventor.TVRemoconData();

Obviously you want the buttons on your remote control to do something. Figure out a way to make this happen in Arduino! Spoiler alert: if, else if, and else statements. Take a look at the example below!

if(keyData==KEY_U)
{
    //ACTION
}

The first if statement you’re going to tackle is about the up button. Use the code below to have your program say “UP” when you press the up button (it’s KEY_U here).

if(keyData==KEY_U)
{
    Serial.println("UP");
}

Next, have your program say “DOWN” when you press your remote control’s down button. Since you already used an if statement for the up button, you need to use an else if statement for this part.

else if(keyData==KEY_D)
{
    Serial.println("DOWN");
}

There might be times when you’re not pressing the remote control’s buttons at all! For those cases, use an else statement to have your program say “NOTHING”.

else
{
    Serial.println("NOTHING");
}

This is what your final code should look like:

#include <SmartInventor.h> // Include library 
 
void setup() {    
    SmartInventor.TVRemoconUse(); // Initializes use of remote control    
    Serial.begin(57600); //Establishes serial connection    
    delay(500); //Indicates time step to allow time for processing}
 
void loop() {
    int keyData = SmartInventor.TVRemoconData();
    if (keyData == KEY_U)
    {
        Serial.println("UP");
    }
    else if (keyData == KEY_D)
    {
        Serial.println("DOWN");
    }
    else
    {
        Serial.println("NOTHING");
    }
}

Up for a challenge? Program actions for all of the other buttons on the remote control!

• KEY_U
• KEY_D
• KEY_L
• KEY_R
• KEY_C
• KEY_F1
• KEY_F2
• KEY_F3
• KEY_F4