Self made shake switch

dear arduino-fans!

i new arduino , i've set project.
i've made own shake-switch, if shake thing, makes contact, in every direction. (he working)
it made piece of polystyrene, nails, small spring weight @ end , screw.





now want program arduino.
i want make led blink when has made contact 5 times in 2 seconds.

so thinking:

code: [select]


int ledpin7 = 7;
int inpin4 = 4;
int val = 0;
int buttonpushcounter = 0;   // counter number of button presses
int buttonstate = 0;         // current state of button
int lastbuttonstate = 0;     // previous state of button
long firstpress = 0;
long countingtime = 3000;
int presses  = 0;

void setup()
{
 pinmode(ledpin7,output);
 pinmode(inpin2, input);
 }

void loop()
{
    if(digitalread(inpin4) == high)
  {
firstpress = millis();
presses = 1;
while(millis() - firstpress < countingtime)
{
    if(digitalread(inpin4) == high)
    {
  presses++;
}
}
if(digitalread(inpin4) == high)
{
  firstpress = millis();
  presses = 5;
  digitalwrite(ledpin7,high);    
}
}
}


but not work! ;(
and have no clue how turn off again when shaking(making contact) 5 times in 2 seconds again.

i think somewhere there has be:

code: [select]


if(button_count == 21) button_count =0;


i've done lot of research, not make work!

thanks,

samory

first things first - doesn't compile. looks typo on pinmode line sets input. badly needs attention of ide's autoformatter.

after you'll need @ debouncing input - tight while loop have register many many presses. purpose of code after while loop eludes me.

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