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How to turn ON 3 LEDs with Arduino NANO

Hello everyone,

I have spent a lot of hours trying to understand how can I turn ON / OFF 3 LEDs attached on my arduino.

I am using button b0 b1 and bt0

can someone please help me, I get led on pin13 to turn on/off but not the others.

Commucation to the display I understand but commucation from Display to do some action in arduino I cannot understand very well.

Here is the code I am using:


int char1,char2;
int charflag=0;

void setup() {

void loop() {
 if (Serial.available()>1) 
 if (charflag)  
  if (char2==0) digitalWrite(13,HIGH);
  else if (char2==0x01) digitalWrite(13,LOW);
   if(char1==0x65) charflag=1;

  Thanks in advance

1 person likes this idea
1 Comment

 can you did that? I need make that

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