How to make a tricky relay?

Question

Do it yourself

There is a button that is pressed N-th number of times, you need to make sure that the contacts close and open only once at the output. What relay can be used? Mains voltage 12 volts.

Answer 1

Any relay + microcontroller, the operation logic will be any.

Answer 2

Implemented on carduino.

int val = 0;
void setup() {
pinMode(13, OUTPUT);
  
}

void loop() {
  
  if(digitalRead(10)==HIGH)
  {
   if(val==0){
   digitalWrite(13,HIGH);//включаем светодио
   delay(1000);  
   digitalWrite(13, LOW);
   val++;
   } 
 }
 else
 {
 digitalWrite(13,LOW);//выключаем
 }
}

On the 13th and GND we put an output relay.
On the 10th and + 5v We put the input.

Answer 3

The logic of the work is not fully understood.
If you need to press the button N times - the relay closes, opens. At what pressure did the relay close? How long should the relay be closed? Is the logic repeated for the next N clicks?
But for example:
1. Programmable relay PR110
Implement the logic you want.
2. Make on microcircuits of logical elements. Put them on a breadboard or printed circuit board.
3. Implement logic on Arduino.

Answer 4

On Arduino, you will need:
1. Arduino Nano (Chinese can be) - 120 rubles on AliExpress
2. Relay module - 70 rubles on AliExpress
3. Converter 5-12 V (any car charger with USB).
The program will be 5 lines in C++.