Hello,
it's my first topic.
I have big problem. I'm building hexapod robot and I need keyboard to drive it. I've written arduino program: it's PS2keyboard/Simple_Test, without serial output but with servo.h library. When i press 'w' one of the servo motors moves. It works properly as soon as I don't press button too long.
How can I edit code? Effect should be the same as if I use microswitch and if().
For instance:
if I press button 'w' for about 5sec - servo moves:
ser[4].write(60);
delay(500);
ser[4].write(120);
delay(500);
if button is not pressed - servo stops and there is no queue or sth like this 
Full code:
#include <PS2Keyboard.h>
#include <Servo.h>
Servo ser[21];
PS2Keyboard keyboard;
int poz[21] = {90};
const int DataPin = 2;
const int IRQPin = 3;
char key = 0, inkey = 0;
void setup()
{
ser[1].attach(53);
ser[2].attach(45);
ser[3].attach(44);
ser[4].attach(47);
ser[5].attach(46);
ser[6].attach(49);
//7-19
ser[20].attach(34);
for(int i=1; i <= 20; i++)
{
ser[i].write(90);
}
delay(1000);
keyboard.begin(DataPin, IRQPin);
}
void loop()
{
if(keyboard.available())
{
key = keyboard.read();
}
if(key == PS2_ENTER)//up with one leg
{
ser[5].write(120);
ser[6].write(60);
delay(250);
}
if(key == 'w')//forward with one leg
{
ser[4].write(60);
delay(500);
ser[4].write(120);
delay(500);
}
key = '0';
}
I'm using ARDUINO MEGA 2560, keyboard: pin 2,3, servo 47,46,49.
Servos and keyboard have separeted source of energu - lead battery, 6v, 4.5Ah, hight discharge.
Keyboard source with one diode to decrease voltage.
Please help me 