Arduino - Digital Inputs

In this video we use digitalRead to read a digital input and control a digital output on an Arduino.
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[@randomlysatisfying6064]

Dude thank you!! Finally someone getting straight to the point!

[@TheMachineShopUK]

No problem, thanks for the comment!

[@sobigamer1277]

dude you are a very good teacher thx

[@TheMachineShopUK]

Thank you very much :)

[@ankushchauhan5752]

Thank you sir for explaining the button system . I was getting confusing why my Adriano showing 0 and 1 random variables in my serial monitor. Even though my pin was not connected. Its because it take random disturbance as 1 . Maybe air resistance. Thank you sir 🙏

[@xkristofer1840]

The way you drew the circuit almost gave me a stroke for a second there but other than that well done this video is awesome!

[@petztech]

the best explanation. thx Sir

[@TheMachineShopUK]

The best comment! Thank you

[@Marorrai]

Awesome, found the video while looking for digital inputs and really enjoyed. Looking forward to follow all the playlist as soon as i finish another intro course

[@TheMachineShopUK]

Anything in particular you would like to see?

[@Marorrai]

@@TheMachineShopUK Honestly i would like to understand better how inputs really work. I don't know if it is a noob or complex topic and didn't get my time to google it but for example i don't know if i can slap a digital input in the middle of a pre-made circuit more or less like a digital multimeter or i have to consider it like, idk, a very big resistor connected to GND(?)

[@paranormaledits9526]

That was really easy to understand. You just won a subscrieb. Thank you so much.

[@TheMachineShopUK]

Yay thank you

[@kenkoong]

I love you 😍

[@airmota2]

Legal , vou usar esta Sket

[@GehanChandika]

Thank you So much for this video.

[@naimeimran3247]

Thanks

[@adityadeshmukh4059]

Nice one!

[@guillermorobledo2842]

Thank you dude!

[@TheMachineShopUK]

You are welcome!

[@smtsoftwaresolutions1966]

Great video, wasted days using digitalWrite & not Read. Thank you

[@patrickmintram9289]

I’d never been aware of that INPUT_PULLUP trick - nice tip. Is it something that’s common on loads of MCUs? Also, what’s the red development board?

[@TheMachineShopUK]

Hey Pat, yes it is a common feature, have a look through the data sheets, it’s often referred to as weak pull-up. The red development board is the Microchip dsPICDEM 2. I’m using it to teach about dsPICs, specifically with motor drive features like the quadrature encoder.

[@mohammadsalman4262]

Thank you very very much..!!!!!!!!!!!!!!!!!

[@TheMachineShopUK]

You are very welcome

[@larido1957]

hi
When you press the button the LED should be on and when you let go the LED should be off
It seems to behave the opposite , why ?
Meir

[@TheMachineShopUK]

Hey, thanks for the comment. If you are using the pull-up method, then the input will read True when you are not pressing the button. So you need to tell the LED to turn off when the input is True and turn on when the input is false

[@larido1957]

hi Thank you, the video was very helpful and very well explained, thank you very much

[@larido1957]

Sorry I still don't understand
Without clicking the button the code else works and you write (13, HIGH)
= led on ?
i means the LED without pressing the button should be on all the time !!!
Meir

[@TheMachineShopUK]

@@larido1957 ah ok, so do you want the LED to turn off when you press the button?