Simple keyboard program holding bottom

Using Arduino Programming Questions
1

hi every one
i made a wireless keyboard with NRF
wich have 4 keys F1, F2, left shift and left control
program and arduino works perfectly
but
the problem is , i cant hold bottoms
i mean when i hold bottom it hit rapidly
but what i want is to hold the bottom ( connect ) and when i release the bottom ( disconnect)
the bottom just as a real key board

i beg to help me
i add reciever and transfer codes and schematics of boards

please help me
its like cancer for me

Processing: wireless keyboard.rar...
1
2
Receiver_e5.ino (1.5 KB)
Transfer_e5.ino (1.6 KB)

Reciver code

#include <Keyboard.h>
#include <RF24Network.h>
#include <RF24.h>
#include <SPI.h>
RF24 radio(7,8); // (ce,cs)
RF24Network network(radio);
const uint16_t this_node = 00;
const uint16_t other_node = 03;

unsigned int laser_state=0;
const unsigned long my_interval = 500;
unsigned long last_sent;
unsigned int income=0;

void setup(void)
{
Serial.begin(115200);
pinMode(9,INPUT_PULLUP);
SPI.begin();
radio.begin();
network.begin(90,this_node);
pinMode(4,OUTPUT);
digitalWrite(4,LOW);
}

void loop(void){
digitalWrite(4,LOW);
network.update();

if ( network.available() ) {
RF24NetworkHeader header;
network.read(header,&income,sizeof(income));
if(income==10){
Serial.println("f1");
Keyboard.press(KEY_F1);
income=0;
}
if(income==11){
Serial.println("f2");
Keyboard.press(KEY_F2);
income=0;
}
if(income==12){
Serial.println("ctrl");
Keyboard.press(KEY_LEFT_CTRL);
income=0;
}
if(income==13){
Serial.println("shift");
Keyboard.press(KEY_LEFT_SHIFT);
income=0;
}
Keyboard.releaseAll();
}

unsigned long now = millis();
if ( now - last_sent >= my_interval )
{
// Serial.print("pin ");
// Serial.println(digitalRead(9));
last_sent = now;
laser_state = digitalRead(9);
RF24NetworkHeader header(other_node);
bool ok = network.write(header,&laser_state,sizeof(laser_state));
}
}

and for Transfer



#include <RF24Network.h>
#include <RF24.h>
#include <SPI.h>



RF24 radio(8,7);
RF24Network network(radio);
const uint16_t this_node = 03;
const uint16_t other_node = 00;

unsigned int laser_state=0;
const unsigned long interval = 5;
unsigned long last_sent;

unsigned int b1=1;
unsigned int b2=1;
unsigned int b3=1;
unsigned int b4=1;

unsigned int d1=10;
unsigned int d2=11;
unsigned int d3=12;
unsigned int d4=13;

//TR1
int btn1 = 3;
int btn2 = 4;
int btn3 = 5;
int btn4 = 6;

void setup(void)
{
//  Serial.begin(9600);
  pinMode(btn1,INPUT_PULLUP);
  pinMode(btn2,INPUT_PULLUP);
  pinMode(btn3,INPUT_PULLUP);
  pinMode(btn4,INPUT_PULLUP);
  SPI.begin();
  radio.begin();
  network.begin(90,this_node);
}


void loop(void){
  
  network.update();

  unsigned long now = millis();
  if ( now - last_sent >= interval  )
  {
    last_sent = now;
    b1 = digitalRead(btn1);
    b2 = digitalRead(btn2);
    b3 = digitalRead(btn3);
    b4 = digitalRead(btn4);
    if(b1==0){
//      Serial.println("F1");
      RF24NetworkHeader header(other_node);
      bool ok = network.write(header,&d1,sizeof(d1));
    }
    if(b2==0){
//      Serial.println("F2");
      RF24NetworkHeader header(other_node);
      bool ok = network.write(header,&d2,sizeof(d2));
    }
     if(b3==0){
//      Serial.println("Ctrl");
      RF24NetworkHeader header(other_node);
      bool ok = network.write(header,&d3,sizeof(d3));
    }
    if(b4==0){
//      Serial.println("Shift");
      RF24NetworkHeader header(other_node);
      bool ok = network.write(header,&d4,sizeof(d4));
    }
  }
}
2

Please modify your post so those who want to help you do not have to download anything.
You can post your code directly here using the code block </> in your reply editor window.

3

thanks i will do it right now

4

Awesome, now people can help you better.

I can see a tiny flaw in the way you are using millis().

This creates inconsistent timing as now could have been delayed by other processes. Instead add your timing interval to last_sent to avoid a time creep. While that should be changed I do not believe that it is your problem.

5

There are 4 reading that you can get off of a button based on its two states of on or off:

  • just became on
  • still on
  • just became off
  • still off

If you record the states of the button like:

bool button_state = digitalRead(button_pin) == LOW;

Then you can compare it to a current state variable to determine if it maintaining a state or has just changed to that state. Given that you can repeat commands when a key is pressed and held.

1 Like
6

thank you for your kindness and your help
but i have no knowledge of programming
i just can upload codes in Arduino
its hard for me to ask but
can you please do corrections to my codes and send them for me
???
:pensive:

7

thank you
i fix it with another way
but
thank you very muck

8

There's no real incentive to do that.

9

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