Please help with randomization

Projects Programming
1

Hi everyone! I have a simple question-can i randomize values in this structure:

byte sending[][2] = {
  {B11111111, B11000111},
  {B11011111, B11110111},
  {B11111011, B10000001},
  {B11111011, B11010111},
  {B10001111, B11000001},
  {B11011011, B11110111},
  {B10000000, B00011001},
  {B11000001, B11111111},
};

I mean that i want to send random bytes to other arduino,and i dont understand how to use random in this situation

2

Use a random number as an array index.

3

AWOL:
Use a random number as an array index.

I used,but nothing changes.
I want to randomize binary values in array

4

Use a random number as the index into the array of binary values.

I'm not sure how many different ways this can be stated.

5

(deleted)

6

I used,but nothing changes.

You failed to post the code that does that.

7 
byte sending[8][2] = {
  {B11111111, B11000111},
  {B11011111, B11110111},
  {B11111011, B10000001},
  {B11111011, B11010111},
  {B10001111, B11000001},
  {B11011011, B11110111},
  {B10000000, B00011001},
  {B11000001, B11111111},
};

unsigned long onceEverySecond;

void setup() {
  Serial.begin(9600);
}

void loop() {
  if (millis() - onceEverySecond >= 1000UL) {
    for (int i = 0; i < 8; i++) {
      for (int j = 0; j < 2; j++) {
        sending[i][j] = random() & 0x000000FF;
        Serial.print(sending[i][j]);
      }
    }
    onceEverySecond = millis();
  }
}
8

for (int i = 0; i <= 8; i++)Oops.

9

AWOL:

 for (int i = 0; i <= 8; i++)

Oops.

fixed... :-[

10

I'm still not sure that's what the OP asked for.

11

AWOL:
I'm still not sure that's what the OP asked for.

Agreed, but I hope he can take from it what he is asking for.