****If you like this, I think you'll like the premium Arduino training we offer. You can check it out here**** bit.ly/3lHyzcB

I’ve watched about four videos on this topic, and yours is the first that explicitly says why a resistor is needed not just how to do it. The part where you said path of least resistance is when the proverbial lightbulb went off in my head. Thanks!

@programmingelectronics

3 ай бұрын

Great to hear! Sometimes for me I think it takes quite a few different angles, and then all the sudden things pop into place - its a great feeling. Glad this could help some!

@independent900

Ай бұрын

@@programmingelectronics I don't think it's about repetition and different angles, it's more about asking and answering the right questions, and breaking it down into digestable parts. After previous videos I was still clueless at the end. Your explanation and visual aids were fantastic, and I echo @clunkclunk2099's experience. Thank you!

Hands down the best explanation on a pull up resistor I've seen. I actually understand now, thank you for this. Subscribing.

@programmingelectronics

8 жыл бұрын

Glad you liked it, thanks for watching!

@cobra646

7 жыл бұрын

same. So many terrible "tutorials" so sift through until you find a good one on youtube

The one phrase that made this video different from all others, and better than all others, is "the path of least resistance." Hearing that gave me a eureka moment. Thank you so much.

Holy crud I’ve been looking at videos like this for over a month now and this is the first one that explains things in plain English! Keep ‘em coming!

@programmingelectronics

10 ай бұрын

I hope it helped!

Great video. I always think of a pull up resistor like a coil spring. When the resistor is connected to 5V, it tries to pull up the voltage at that point to 5V but can be overcome by a direct connection to ground when the button is pushed. Much like a spring, it returns to the original position (5V) when released. When the button is pushed there is a 5V drop across the resister which is converted to a very small amount of heat. There is very little current flow because the resistance is relatively high. A pull down resistor really works the same way, the resistor or "spring" is connected to ground. When the button is pushed the switch can provide 5V which overcomes the ground and produces 5V to the Arduino pin. Since the symbol for a resistor is a wiggly line, it reminds me of a coil spring.

After learning from your tutorials from one week , no other tutorial on youtube can match your level ! Thanks man !

I finally understand this concept now!!! Thank you. Your tutorials are great.

another great expression; " *Tying up* the pin to a certain voltage". It draws a clearer figure in my mind than "pulling up" the pin to voltage.

I dont think you have any idea how much you are helping the electronics community. Thank you thank you thank you !!

I got No words to express how iluminating your videos are.... you make all the electronic's messy theory a vivid and smooth experience. THANK YOU SO MUCH

best explanation i have ever found. You have a skill that many people lack that is explaining things clearly and using the right images to add to what you are saying. So many videos the stuff on the screen doesn't quite fit what is being said.

lmao! I didn't even know I had this problem and since I am a programmer, I did the solution software-wise by it counting the number of loops that it's low. If it is low for over 20 loops the button is pressed. Not very elegant, I know

**THANK YOU SIR** Best tutorial's; simple, well thought out, flows logically and to the point. Great stuff!

Very good explanation on how the pull up resistor works, I have been finding a good explanation for a long time until I find this.

Seeing the circuit you built helped a lot. Thanks!

The best video on this important concept. Very nicely done. Thank you.

Best explanation of Pull-Up Resistors I've seen. Only improvement is if you said the Arduino has one built in, and how to activate it.

@programmingelectronics

2 жыл бұрын

Thanks so much for watching! Good call - that totally should have been covered in this video. You may already know, but just in case... To use the internal input pull up, use pinMode(yourDigitalPinNumber, INPUT_PULLUP) What this does is set the pin as an input - so it can read digital inputs - but it is internally being pulled to a HIGH state. If you want to trigger your input, you connect the pin to ground (i.e. through a button press) www.arduino.cc/reference/en/language/functions/digital-io/pinmode/

Michael Cheich: Thank you for this excellent video. Took me a while to "get it", but now I do. After watching this, I took your free "Arduino Crash Course", which convinced me it would definitely be worth buying full access to all your training, which I have now signed up for (so you can, as you say, keep gas in your Lamborghini...) Now just a couple of notes (as Michael says, the best way to learn is to look for opportunities to "teach" - explain it to someone else): This video shows the problem of floating pins, and how to resolve that via an external pull-up resistor. Once you understand the concept, you can by-pass the problem on digital input pins in one of these two ways in your code (rather than on a breadboard) - using digital pin 2 as an example: pinMode(2,INPUT); digitalWrite(2,HIGH); // WRITING HIGH to this INPUT pin activates its built-in pull-up resistor. OR pinMode(2,INPUT_PULLUP); // Does both of the above steps in a single statement. Either of those activates the internal pull-up resistor built into the Arduino digital (and maybe analog?) pins. This info can be found in the Arduino Reference documentation for the pinMode function. Again, I suggest you DON'T use the built-in pull-up resistors until you complete this video and understand the problem of floating pins in the first place.

you are really a gift to engineering.I now understand clearly what is mean by pull up resistor. I am try to get the money so that i will buy training materials from you . thanks a lot .

that was a very cool video tutorial. Thanks for solving the pull-up meaning and floating pins....so cool ¡¡¡

cool i like how you explain things :) this was very helpful you were the reason i got interested in arduino :) and other MCUs

Thanks man this vid really clarified some stuff for me.

This video just cured my headache. Thanks a lot.

@programmingelectronics

4 жыл бұрын

Glad it helped!

Instant subscription after the first minute - brilliant humor.

This tutorial is pretty awesome! Thanks for uploading it. I'm subscribing to your channel for more! Cheers, LD

One of THE most important concepts for an Arduino use to understand. Thank you !!!

@programmingelectronics

Жыл бұрын

Thanks so much for watching!

Thanks a lot. I am a begineer in electronics and this problem made me frustated many times, but after your explanation it will be very easy to solve this.

This is the best explanation I've seen and has also helped me understand what INPUT_PULLUP and INPUT_PULLDOWN are doing.

@programmingelectronics

3 жыл бұрын

Glad it helped!

Well explained..thank you so much!

Very good video! So helpful !!

Beautiful explanation, was just looking for this, Thanks a ton.

@programmingelectronics

2 жыл бұрын

Glad it was helpful!

Nice tutorial agains... Love this channel

Thanks a lot for the explanation. You really saved my day. :)

Awesome Explanation!

For me as a beginner Most easy and value providing video on yt great explaination keep going🔥🔥🔥

@programmingelectronics

2 жыл бұрын

Thanks so much!

It solved my digital pin input problem. Thanks

Finally got it. Thank you

This explained it very well!

Thank you. That helped a lot!

Thank you for making it understandable.

I would also add that this mysterious "noise" is that cable starts working as an antenna (like the one in your phone), if you pull out the cable, the pin read will go from random to 0.

Great explanation, nice and simple, thanks! I was having difficulty understanding the Pull-up pins

@programmingelectronics

3 жыл бұрын

Glad it helped! Thanks for watching!

Funny guy. Love the intro with the surfing micro-controller

Thank you, you explain things very clearly! Cheers

@programmingelectronics

8 жыл бұрын

+d4ny4pres1d3nt Thanks for the kind words! I hope you enjoy the other videos.

Great explanation. Subbed!

Nice a simple and makes perfect sense now! Thank you.

@programmingelectronics

8 жыл бұрын

+northshorepx Thanks for watching - glad it helped!

Good Lesson!!

After watching AddOhm's tutorial I understood this topic. Now I am confused again. Never mind, I still liked it because you wrote some actual code and explained what it did and why. I am new to all this and it seems like everyone doing tutorials just uses simple existing sketches so you never see anything original being written. So bottom line, thank you and I'll watch this until I get clear on it again.

Thanks for this helpful video

the atmega 328 has built in pullup resistor you have to activate in the void setup using digital write to high. ;)

great job... got it crystal cleared!!!!!!!!!!

Thank you your tutorials are great

Finally...now I get it! Thanks! :)

Very good explanation :)

Thank you for your clear explanation. great course!

@programmingelectronics

8 жыл бұрын

Thanks Bart - I hope you can find them all helpful.

Thank you i've finally understrood thanks to you !!

Great explanation, thanks a lot man!

@programmingelectronics

3 жыл бұрын

Glad it helped!

Excellent video. Now I understand a LOT more. Thanks!

@programmingelectronics

8 жыл бұрын

+Maxr1998X Great, glad you found it useful!

@umarmoiz8810

8 жыл бұрын

+Programming Electronics Academy Can we use INPUT_PULLUP in our code ?as opposed to adding an external resistor or does it not work like that ?

easy new sub, first vid to properly explain it

@programmingelectronics

4 жыл бұрын

Glad to hear it helped!

Thank you sir, I'm not really good at reading from the net but this video explain perfect. I love it!! subscribing. more power to you sir.

@programmingelectronics

4 жыл бұрын

Awesome, thank you!

great lecture 👍

Excelente Información!!

Nice one Michael. That helped.

@programmingelectronics

2 жыл бұрын

Glad it helped Richie!

Remember: that life boat is still floating! Better pull that up into the ... no, wait.

WOW man hands down for sure !!!

Nice video, thanks for sharing :)

@programmingelectronics

2 жыл бұрын

Thanks for watching!

Good work. Thanks

@programmingelectronics

8 жыл бұрын

+George Kot Thank you for watching!

I am wondering how the pull-up resistor put if I have a sensor that has V++, Vcc and GND?

I think it would have been helpful to add that changing the input pin mode assignment from pinMode(Pin_Input, INPUT); to pinMode(Pin_Input, INPUT_PULLUP); accomplishes the same thing and eliminates the need for an external resistor.

@programmingelectronics

2 жыл бұрын

Totally agree Chuck! Thanks for pointing that out!

Funny intro ^.^ Great explanation, too.

Thanks mate!

Very clear. Thanks

@programmingelectronics

8 жыл бұрын

+cill521 thanks for watching!

very helpful for my final exam. thanks

@programmingelectronics

8 жыл бұрын

+pengci gao Thanks for watching!

Thank you for great explanation

@programmingelectronics

5 жыл бұрын

Thanks Shaun!

The best video.

Is it possible to implement a pull up resistor, but substitute the pushbutton with a sensor or an optocoupler?

Good explanation, thanks.

@programmingelectronics

9 жыл бұрын

Raul M Thanks!

Superb👌

I have a question to blink a led we connect ground to the negative pin of the led bit here I don't understand where does the current move from the ground or the 5v pin please help

This is the best tutorial i ever encountered but still a small question. After the pull up resistor is connected to 5V , isnt the connection to digital pin 2 is always gonna read High even after its pressed or not ! or am i wrong on some logic ?

Great explanation.

@programmingelectronics

4 жыл бұрын

Thank you - I appreciate that!

Great tutorial

@programmingelectronics

9 жыл бұрын

WhiskyPankcake Thanks!

Thanks, it helped.

@programmingelectronics

4 жыл бұрын

Glad it was useful!

Good job!!!!!!!!

@programmingelectronics

4 жыл бұрын

Thank you!

Great explanation!

Woohoo!! Thanks man. You just helped me understand the concept of floating pins. I've been trying to get this and all the other sources I consulted didn't help much. Thanks 😊 Also I checked your other tutorials and I'll like to pay for your course. But I'm a bit wary course I've registered for some courses and they turned out to not be what I expected. So, is there like a trial version I can test with before payment?

@programmingelectronics

2 ай бұрын

Here is a free course we offer: www.programmingelectronics.com/arduino-crash-course/ If you like this, I think you'll like the training program.

Thank you.❤

@programmingelectronics

2 жыл бұрын

Thanks for watching!!!

you are great men! and nice humor twitch on it

@programmingelectronics

9 жыл бұрын

Thanks for watching Pinda !

I'm not getting any change in the serial monitor when I push the button. I use a Nano. I'm not getting the shifting in 0 and 1 I the beginning of the example

Great. Anyway, how make press 2 times within one second make output?

What you are reading at "floating" pin is your main (50 or 60 Hz). That is because input pin has very high impedance. Pull up resistor make "offset" to the +5V. But, you may want to avoid adding resistors to +5V by simply using next code(s): pinMode (2, INPUT_PULLUP);, where MCU gives about 200 kOhm resistor internaly to pin 2. Or: pinMode (2, INPUT); digitalWrite(2, HIGH);, which gives the same result. Note that although pin 2 is input, you write in setup HIGH value (digital 1). There is NO pull-down resistor inside MCU. Another advanced way to make whole sketch: void setup() { Serial.begin(9600); DDRD &= ~(1

@pikeshmn

7 жыл бұрын

Floating pin take charges around from your finger, stray wires etc.! This causes the fluctuating voltage..So you need to tie it up! Nice concept!

Please help me. Can you tell me if I can activate a pull up resistor when an alarm sounds?

Ok so I'm having this exact issue but instead of a button, I'm using an rc receiver. How do I stop this from happening as the rc receiver uses a pwm signal?

thanks bro you permitted actionoise sistem......

how can we turn a pin high using the output of another arduino?

The book shown at the beginning of each video where to purchase??

it helped

what the another thing can be used in place of uno

i m a beginner 1st yr studentwhat should be the approx value of pullup resistor ? so that the pin reads high despite its drop across resistor.