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Curiosity Killer

Project #10

Press the Button 5000 Times

With this invention, encourage your 'victims' to continue pressing the sensor - tell them something interesting will happen! The catch? They have to do this FIVE THOUSAND TIMES, and all for a short 'beep'.

The Kit

The Amazing Annoyatron

Build this invention, and many more, with The Amazing Annoyatron!

What you’ll need

Brain Board


Touch Sensor

3 x Wires

Step 1

Let’s build this!

Curiosity Killer
This is the positive leg of the buzzer. It will have a ‘+’ sign on top of it and will also be longer than the other leg.
Don’t forget to plug the board into your computer with the included USB cable.
The touch sensor is like a button, except that you only have to touch it lightly.



The +LEG is the longer leg.

+ LEG11
- LEG11

Touch Sensor

Use wires to join these.


Step 2

Code some chaos!

Don’t forget to select your port, like ususal

Copy and paste the sample code

int touchSensor = 3;
int buzzer = 11;
int beepLength = 5;
int count = 0;
void setup() {
  pinMode(buzzer, OUTPUT);
  pinMode(touchSensor, INPUT);
void loop() {
    if(count != 5000) {
      digitalWrite(buzzer, HIGH);
      digitalWrite(buzzer, LOW);
      digitalWrite(buzzer, LOW);
   } else {
    tone(buzzer, 2000, 1000);

Upload the code and test it out

Step 3

Modify the Madness!

Change how many times you have to press this button

5000 presses is a lot if you just want to see what happens when you get to 5000! But never fear, we can change that in the code (you were expecting that, weren’t you). Line 12 is where all the magic happens.

if(count != 5000) {

Change the number 5000 to whatever you like – this controls exactly how many times you have to press the button before you get some satisfaction out of this invention. And that satisfaction is just a slightly longer beep.

Change the beep length

Another thing we can have a fiddle with is the length of the beeps that happen when you press the button once. At the moment, they are very short – just 5 milliseconds in length. Being so short, they almost sound like clicking or tapping.

int beepLength = 5;

On line 3, we can change this. If you want each beep to go for a little longer, try 100 milliseconds, which makes the beeps sound more like beeps.

int beepLength = 100;