Normally open push button switch turned into on or off flip flop circuit learning electronics 

wow so impressive thanks for sharing your knowledge

You're the best

should still work the same with 7400 right? Mine doesn't 😞

is it just me, or are those push buttons sometimes really finnicky at staying in the breadboard? a lot of the time the pop out which is really annoying.

How do i retain the state memory after power loss?

Thanks for sharing. Very informative like all your videos. Great for a person like myself. Just a novice as far as electronics goes so your channel is very helpful. Thanks and stay safe and well Artie 👍

It looks like a latch circuit

very good video but it doesn't work !!!

I making a project in that i have three different modes so i want to control 3 modes by using push button . Singletape : mode 1 Double tap: mode 2 Triple tap: mode 3 This is my code: #define sw 5 //pin at push sw is connected #define SENSE A0 #include SoftwareSerial myserial(3, 4); // RX, TX int lastButtonState = HIGH; // the previous reading from the input pin unsigned long lastDebounceTime = 0; // the last time the output pin was toggled unsigned long debounceDelay = 50; // the debounce time; increase if the output flickers bool buttonState = HIGH; //saving state of the switch byte tapCounter; //for saving no. of times the switch is pressed int timediff; //for saving the time in between each press and release of the switch bool flag1, flag2; //just two variables long double presstime, releasetime; //for saving millis at press and millis at release void setup() { Serial.begin(9600); //for serial monitor myserial.begin(9600); pinMode(sw, INPUT_PULLUP); //setting pin 5 as input with internal pull up resistor pinMode(SENSE,INPUT); pinMode(2,OUTPUT); pinMode(LED_BUILTIN,OUTPUT); } void loop() { int reading = digitalRead(sw); if (reading != lastButtonState) { // reset the debouncing timer lastDebounceTime = millis(); } if ((millis() - lastDebounceTime) > debounceDelay) { if (reading != buttonState) { buttonState = reading; } } //Serial.println(buttonState); //when switch is pressed if (buttonState == 0 && flag2 == 0) { presstime = millis(); //time from millis fn will save to presstime variable flag1 = 0; flag2 = 1; tapCounter++; //tap counter will increase by 1 //delay(10); //for avoiding debouncing of the switch } //when sw is released if (buttonState == 1 && flag1 == 0) { releasetime = millis(); //time from millis fn will be saved to releasetime var flag1 = 1; flag2 = 0; timediff = releasetime - presstime; //here we find the time gap between press and release and stored to timediff var //Serial.println(timediff); //delay(10); } if ((millis() - presstime) > 400 && buttonState == 1) //wait for some time and if sw is in release position { if (tapCounter == 1) //if tap counter is 1 { if (timediff >= 400) //if time diff is larger than 400 then its a hold { Serial.println("Hold"); hold(); //fn to call when the button is hold } else //if timediff is less than 400 then its a single tap { Serial.println("single tap"); singleTap(); //fn to call when the button is single taped } } else if (tapCounter == 2 ) //if tapcounter is 2 { if (timediff >= 400) // if timediff is greater than 400 then its single tap and hold { Serial.println("single tap and hold"); tapAndHold(); //fn to call when the button is single tap and hold } else // if timediff is less than 400 then its just double tap { Serial.println("double tap"); doubleTap(); //fn to call when doubletap } } else if (tapCounter == 3) //if tapcounter is 3 //then its triple tap { Serial.println("triple tap"); tripleTap(); //fn to call when triple tap } else if (tapCounter == 4) //if tapcounter is 4 then its 4 tap { Serial.println("four tap"); fourTap();//fn to call when four tap } tapCounter = 0; } lastButtonState = reading; } void nolight() { } void singleTap() { } void doubleTap() { } void tripleTap() { } void fourTap() { } void hold() { } void tapAndHold() { } Pls help me out of this problem 🙏

Excellent. Thank you.

very good video but it doesn't work !!!

Thanks man