Excellent video. If only all the professors of whose lectures I’ve sat in could explain things so clearly. I swear that they always think it’s their students fault for being incapable of comprehending it, when in reality they overcomplicate and thereby mystify what are in reality basic concepts which anyone can understand-so long as someone like you explains it.

I haven't seen lately such a good tutorial describing things in general, congratulations! Everything is clear and explained in such a profesional way.

@marios_ideas

Жыл бұрын

Thanks:) Makes it all worthwhile:)

You have NO IDEA just how much you helped me see the difference. I have a Rasp Pi 4, for about a year and a half now, and awesome fun they are. I have to learn so much more. I watch you guys all the time to help me learn electronics in a later life. I'm in my late fifties and I'm learning this on my own, with help from you guys and internet sources always helped. Superb Thank you....👌👍

@marios_ideas

9 ай бұрын

Glad I can be off help:) Consider supporting my channal.

I was stuck with this confusion whole day you have no Idea how much you helped THANK YOU

Best description of the concept I have found thus far. Thank you very much for making this video!

NIIIIIICE JOB!! At last, pull-up, pull-down, pull-left, pull-right all understood. Thanks, man.

Thanks for going to such great lengths animating all of this. Great work!

@marios_ideas

Жыл бұрын

Glad you enjoyed it!

Very nicely done, and thanks for mentioning the on-board resistors.

Simplest tutorial i have seen so far, Thank you

Really well explained! Thanks so much. This will help me a bunch with a current project.

One of the clearest explanations I've watched. Thanks a lot!

@marios_ideas

9 ай бұрын

You are too kind:) Please consider supporting my channal.

Questo è un video fantastico e spiegato da dio! grazie Mario

Clear explanation with example, Thank you sir

Best Video concerning Pullups so far, thank you very much!

@marios_ideas

Жыл бұрын

Wow, thanks!

Best tutorial. Thousand Thanks, Brother.

This is so good. OMG - you are such a great teacher. I am so impressed - Thank you!!!!

@marios_ideas

Жыл бұрын

You are too kind:)

Boom! just like that, my switch actually controls my relay! I'm a 4th year Mech Engg student making a conveyor sorting system for school, and I could not for the life of me figure out why in the off position my relays would go nuts. Thank you, Mario. You saved me from a lot of frustration!

very clear presentation👍

Nicely done. Thank you.

brilliant! thank you so much - so clear and logical.

@marios_ideas

2 жыл бұрын

THX:) Like the video if you enjoyed it. You support my channel this way

Great Video!

Wow it's really a great explanation and the illustrations are simple and awesome

@marios_ideas

Жыл бұрын

Thanks:)

You have been reading my mind lately. You are posting videos on topics I am researching haha

@marios_ideas

2 жыл бұрын

I have not been called a mind reader before:) Like the video if it was what you were looking for

Great Video, love the first old bit, very cool, have subscribed

@marios_ideas

2 жыл бұрын

I am glad you liked it. Had lots of fun making that intro:)

Thank you so much mate. I'm doing a quiet big project for swimming pools, to control the filter pump, booster pump, chlorinator, heater, valve actuators, variable speed pumps etc, my project was working fine on protoboard, I printed the PCB and the button interferences show up on butons inside the MENU screen, now I'm using pullup method using the ESP32 internal resistors, and voilà it's working fine again. Many thanks for your time to make and post this video, I'm really gratefull. Cheers.

@marios_ideas

8 ай бұрын

Glad my content was of help to you. Consider supporting my channal

I've been working on making a buzzer controlled by a PWM signal for close to a week now. I've been troubleshooting my code since the beginning thinking the mistake was in there. After this video I solved my problem in less that 5 minutes. Great video!

@marios_ideas

6 ай бұрын

Great it was helpful. Consider supporting my channel:)

Perfect explanation, thank you

@marios_ideas

Жыл бұрын

My pleasure:)

Thank you, sir.

A very good explanation!

@marios_ideas

Жыл бұрын

My pleasure:) like the video and subscribe to my channal. Also consider supporting it.

Just Thank you sir, just thank you

Not to much talking. Proof of everything with mathematical language which everyone understands, very good job, kydos to you.

@marios_ideas

8 ай бұрын

You are too kind:)

Thank you!

thank you dear you helped me a lot

great. Thanks. I didn't know that a pullup was already in Arduino. thanks

Thank you 🙏

Useful!

helped so much thanks

Thank u so much! it helped so much on my task from Senac xD

@marios_ideas

9 ай бұрын

Glad I could be off help. Consider supporting my channel.

Ty, u save my time i have same problem and now i know how to fix it.

@marios_ideas

2 жыл бұрын

Give video a like if you enjoyed it. Subscribe if you want to see similar content in the future:)

thank you. concise.

@marios_ideas

2 жыл бұрын

Give video a like if you enjoyed it

best explanation

@marios_ideas

2 жыл бұрын

Give video a like. Would help me a lot:)

As newbie i can say , i've got same mistake(i realized that after whole day of thinking). Im really glad , that im not the only one who did that mistake😅

Wow! Best explanation yet! Perfect mix of theory and circuitry and how they work! Thanks. Still one puzzle. The original problem was due to noise voltage in the open or loose wire going to A0. In your diagram for pull down, that same wire is still there with the OPEN switch. Why isn't that same noise still present? Indeed it is now connected to ground via a resistor making the current flow for this very tiny voltage difficult. So why doesn't the original noise voltage still flow to A0?

@marios_ideas

4 ай бұрын

Not being very electronic profficient I also had a problem to get my head around it. But in summary. Voltage doesn't from current does. If flows from positive voltage to ground. And through pulldown resistor and the use of voltage divider we set ground at the pin. Arduino detects the voltage value not the flowing current.

Thanks Mario. Excellent explanation. For this button/LED set up, is it necessary to use and Analog pin, or will the set up also work with a digital pin? Thanks

@marios_ideas

Жыл бұрын

All pins have built in pull up resistors. I just chose to use Analog pin

Sir how do you calculate the resistor value (10k) ? Please help me...🥺. Thank you so much for this video😊.

instead of pinMode (9,OUTPUT) is it possible to declare SDA(A4) or SCL(A5) as output to switch on an oled to show time for 5 seconds in a night clock project and a capacitive proximity sensor instead of a button?

@marios_ideas

2 жыл бұрын

Yes. You can do any other action. Led is just an example.

Can I write pinMode(A0, input_pulldown) When I put the up signal then pin no 9 is up otherwise low.

@marios_ideas

Жыл бұрын

No . There are only pull-up resistors build in. You have to adjust the code to take this revers behavior into account

Which one is better pull up or pull down?

@marios_ideas

Ай бұрын

There is virtually no difference. Internal Pull up wins, as you can use build in pull up resistors so then you do not have to use external resistors.

Something about 6:45 to 7:30 I just am not understanding. Why would it read high with a big fat resistor in the circuit? …i mean I get that I need to add a pull up / pull down resistor - but I can’t follow the logic of where/how the electricity is flowing. It’s strictly a ‘me’ problem…

In pull-up configuration, why do we have all 5V when the button is not pressed ? Normally, shouldn't we have much less than that because of the big resistor of 10k ohms that will decrease those 5V ?

@marios_ideas

Жыл бұрын

Have you watched the video carefully. There is an explanation using voltage divider circuit to show how this works

@SebVEVO

9 ай бұрын

@@marios_ideas Actually he was not asking about the voltage divider when the circuit is closed, but why when the circuit is open the 5V goes through a 10k resistor to A0 but still remains 5V instead of decreasing for e.g. to 2V? I didn't understand this too.

@marios_ideas

9 ай бұрын

A push button is a mechanical switch that consists of two states: pressed and unpressed. When unpressed, the button effectively disconnects the digital pin from ground, so the pull-up resistor is the only component in the circuit connected to the pin. Since the resistor has a high value (10k ohms), it limits the current flow to a very low level, and the voltage at the pin remains close to 5V.@@SebVEVO

@Markus-fw4px

2 ай бұрын

Since there is no current-flow when the button is not pressed, just use U=R×I to understand. Without current there is no voltage drop after an resistor.

Why does it not blink when we haven't pushed the button one time yet ? Why does it start to blink only when we do push the button and release it for the first time ? Does it ??

@marios_ideas

Жыл бұрын

You mean when we have a floating pin situation? It is completly random

@ousmanediouf9264

Жыл бұрын

ok, thanks

why would I want to use external resistors when I can let the arduinos internal resistor handle it?

@marios_ideas

10 ай бұрын

I guess only if you do not want to have the Pullup logic and want to stick to pulldown. For small project adding a resistor is not a big deal. but for more complex ones if you create custom PCB minimmising number of conponents is super important. A lot of people do not also realise that those pullup resistors are available:)

@bigmac9712

10 ай бұрын

@@marios_ideas alr, thank you for the response (-;

555th like... lol!

My question here: Why 10k resistor, why to put a resistor ?

@TalketiveGitCoding

8 ай бұрын

Maybe so that current only flows through the switch

@Figit__bg

8 ай бұрын

Because when you press the button power will flow from 5v to ground directly and resulting short circuit

🤓