Dear all, I am looking for a circuit that can on an led by pressing the same button for 3 times?





Thank you for reading and have a nice day

 

Dear all, I am looking for a circuit that can on an led by pressing the same button for 3 times?





Thank you for reading and have a nice day

Doing this with a counter and an AND gate will be one option. A fourth press will turn it off. Then three more presses will turn it on.

Or, you can use a decade counter (CD4017) and connect reset to the Q4 output. Connect your LED to output Q0 (with a resistor in series. You'll need to debounce your switch, obviously.

 

Look at a CD4017 or CD4022 Johnson counter.

 

Probably overkill, but...
If you use a tiny arduino-like board (they're ridiculously cheap&small now), then the firmware can do the debouncing and also deal with the timing of the button. For example... if the button is depressed less than 3x what do you do? Should that time out if all three button presses don't occur within some window of time?

 

Probably overkill, but...
If you use a tiny arduino-like board (they're ridiculously cheap&small now), then the firmware can do the debouncing and also deal with the timing of the button. For example... if the button is depressed less than 3x what do you do? Should that time out if all three button presses don't occur within some window of time?

Welcome to AAC.

The ATTinyXX (85, 13, etc.) would be.a great solution if the person was already programming MCUs for some other reason. But in this case it introduces complexity that is probably not worth dealing with.

If the TS is already using Arduino tools, it’s certainly worth considering but I would probably not use a development board and instead just program the MCU itself and put it on a small board for the project.

 

What happens if you press it two times, then wait an hour and press it a third time?

How do you turn it off?

 

What happens if you press it two times, then wait an hour and press it a third time?

How do you turn it off?

Exactly. Has the TS thoroughly worked through all the possible scenarios?
In other words, what are the complete specifications?

 

What happens if you press it two times, then wait an hour and press it a third time?

How do you turn it off?

Hi sir, thanks for replying. Well, I think CD4017 or CD4022 Johnson counter with some logic gates are good for my case. And after the led lights up, I can just reset everything by disconnect and reconnect power supply, thus, it should be working properly for the next cycle

 

Hi sir, thanks for replying. Well, I think CD4017 or CD4022 Johnson counter with some logic gates are good for my case. And after the led lights up, I can just reset everything by disconnect and reconnect power supply, thus, it should be working properly for the next cycle

How does that answer my first question?

And what happens with a fourth press?

 

might be as simple as charging a low leakage j-Fet or MOS-FET gate by quanted Coulomb charge

A simplified example

Releated : staircase ramp generator , pulse formation and shaping

 

How does that answer my first question?

And what happens with a fourth press?

The led will be on the third press and any subsequent press after that

 

Hi sir, thanks for replying. Well, I think CD4017 or CD4022 Johnson counter with some logic gates are good for my case. And after the led lights up, I can just reset everything by disconnect and reconnect power supply, thus, it should be working properly for the next cycle

This means that you need to have a suitable power-on reset to ensure that everything starts up the way you want it to.

Also, be sure that you properly debounce your switches, otherwise the first switch may be seen by your circuit as about a dozen pushes.