# Two toggle button to activate a LED **URL:** \ **Category:** General Guidance\ **Created:** [February 10, 2022, 1:43pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648 "2022-02-10T13:43:56Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![devinbabu](https://avatars.discourse-cdn.com/v4/letter/d/f17d59/32.png) [@devinbabu](https://forum.arduino.cc/u/devinbabu)\ **Post date:** [February 10, 2022, 1:43pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/1 "2022-02-10T13:43:56Z")
Hi, i have a problem in using 2 toggle buttons to light up an led. let's say toggle A (TA) and toggle B (TB) are the toggle buttons. The LED should light up only when TA then TB is pressed. When TB is released LED should be off. In my mind: a) Since its a toggle button, how do we hold or keep TA value and compare to TB (both high) to activate the LED ? b) how do we set all button state in off before running ? Thank you all in advance. ---
**Author:** ![kgray9](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/kgray9/32/671408_2.png) [@kgray9](https://forum.arduino.cc/u/kgray9)\ **Post date:** [February 10, 2022, 1:57pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/2 "2022-02-10T13:57:35Z")
> [@devinbabu](#): > > should light up only when TA then TB is pressed In that order? Or just when both are pressed at the same time? > [@devinbabu](#): > > When TB is released LED should be off What about TA? ---
**Author:** ![paulpaulson](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/paulpaulson/32/363643_2.png) [@paulpaulson](https://forum.arduino.cc/u/paulpaulson)\ **Post date:** [February 10, 2022, 2:01pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/3 "2022-02-10T14:01:56Z")
Hello Is this a school assigment, isn´t it? ---
**Author:** ![devinbabu](https://avatars.discourse-cdn.com/v4/letter/d/f17d59/32.png) [@devinbabu](https://forum.arduino.cc/u/devinbabu)\ **Post date:** [February 10, 2022, 2:04pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/4 "2022-02-10T14:04:10Z")
1st : yeap thats the order TA then TB. press TA then release, then press TB (LED light up) , release TB(LED off) 2nd: TA press once before TB. ---
**Author:** ![devinbabu](https://avatars.discourse-cdn.com/v4/letter/d/f17d59/32.png) [@devinbabu](https://forum.arduino.cc/u/devinbabu)\ **Post date:** [February 10, 2022, 2:05pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/5 "2022-02-10T14:05:25Z")
yea some kind like it, trying to get the basics right. ---
**Author:** ![kgray9](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/kgray9/32/671408_2.png) [@kgray9](https://forum.arduino.cc/u/kgray9)\ **Post date:** [February 10, 2022, 2:14pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/6 "2022-02-10T14:14:03Z")
> [@devinbabu](#): > > yea some kind like it Since this is a _school_ project, ill give you a _small_ code piece that explains what happens: ```arduino void loop(){ if (digitalRead(TA) == HIGH){ // if the TA button is pressed while (digitalRead(TB) != HIGH); //wait for the TB button to be pressed while (digitalRead(TB) == HIGH); //wait for the TB button to be released digitalWrite(LED, HIGH); //turn on the LED while (digitalRead(TB) != HIGH); //wait for the TB button to be pressed while (digitalRead(TB) == HIGH); //wait for the TB button to be released digitalWrite(LED, LOW); //turn off the LED } } ``` ---
**Author:** ![devinbabu](https://avatars.discourse-cdn.com/v4/letter/d/f17d59/32.png) [@devinbabu](https://forum.arduino.cc/u/devinbabu)\ **Post date:** [February 10, 2022, 2:54pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/7 "2022-02-10T14:54:02Z")
thank you, kind of clear now. ---
**Author:** ![Grumpy\_Mike](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/grumpy_mike/32/213521_2.png) [@Grumpy\_Mike](https://forum.arduino.cc/u/Grumpy_Mike)\ **Post date:** [February 10, 2022, 3:40pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/8 "2022-02-10T15:40:14Z")
> [@devinbabu](#): > > i have a problem in using 2 toggle buttons Now do you actually mean a toggle button? The word toggle means change the state, so a toggle button would mean every time it is pressed it will change its state. This is also known as a latching switch or a push on push off switch. I suspect you actually mean a momentary push button which is what that code is written for. ---
**Author:** ![kgray9](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/kgray9/32/671408_2.png) [@kgray9](https://forum.arduino.cc/u/kgray9)\ **Post date:** [February 10, 2022, 3:42pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/9 "2022-02-10T15:42:29Z")
Yes. I assumed he meant momentary "tactile" buttons, but I forgot to confirm that with @devinbabu . ---
**Author:** ![devinbabu](https://avatars.discourse-cdn.com/v4/letter/d/f17d59/32.png) [@devinbabu](https://forum.arduino.cc/u/devinbabu)\ **Post date:** [February 10, 2022, 3:55pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/10 "2022-02-10T15:55:34Z")
> [@Grumpy\_Mike](#): > > momentary push button hi, yea i meant by momentary push button ---
**Author:** ![devinbabu](https://avatars.discourse-cdn.com/v4/letter/d/f17d59/32.png) [@devinbabu](https://forum.arduino.cc/u/devinbabu)\ **Post date:** [February 10, 2022, 3:56pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/11 "2022-02-10T15:56:11Z")
i meant the toggle as momentary push button, sorry for the miss concept. ---
**Author:** ![Grumpy\_Mike](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/grumpy_mike/32/213521_2.png) [@Grumpy\_Mike](https://forum.arduino.cc/u/Grumpy_Mike)\ **Post date:** [February 10, 2022, 4:08pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/12 "2022-02-10T16:08:26Z")
> [@devinbabu](#): > > i meant the toggle as momentary push button, OK but remember in future to use the right words. It is important in all walks of life but especially in a technical / science subject. ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [August 9, 2022, 4:08pm UTC](https://forum.arduino.cc/t/two-toggle-button-to-activate-a-led/957648/13 "2022-08-09T16:08:52Z")
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.