Arduino tutorial 2- LED Blink program with code explained | How to blink an LED using Arduino |

[@DrSauravDas]

Very good video. I showed this video to my class and instantly they became newton.

[@techathome]

Thank you ❤️ 😂

[@elricbell4662]

Thanks very much for this. As a complete newcomer to Arduino I have been able to write and edit my first simple sketch and actually understand what all the commands mean. Well done for such a well-planned tutorial.

[@techathome]

Welcome!!

[@misamiamya]

thank you for the code explanation! very helpful!

[@techathome]

Welcome ❤️

[@manupriya5537]

bro i am totally fresher to this concept in my clg they are giving placement training regarding IOT , but i could not understand anything today after seeing ur vd i felt happy thank u so much pls continue do more vds

[@techathome]

Thanks for the feedback♥☺ All the best!!!

[@kripathankachan1782]

My led is blinking ☺️☺️👍

[@OVaishnaviRaut_IT]

😄😃😃😃😃😃

[@maniyammani981]

Pro

[@hanjomike6447]

How you do it?

[@ahmedal-kharusi9053]

Hello nice video , why you didnt do a resistor for the led so it will not burn with 5v ?

[@techathome]

As I have read , pin 13 has inbuilt resistor. But it is always better to use current limiting resistor. May be it will burn, if it is ON for long time without resistor.

[@nisarggaming802]

sir in my case there is some error in uploding infact I use same code and do all as you done but my port shows two port com1& com3 .I chose both but both led to error

[@techathome]

What is the error. You can check your com port in device manager.

[@theGday]

great video bro I am from software background but i always have a question about these things that how it work now i understood

[@techathome]

Thank you!

[@tanusrisantra7111]

Tnx u so much....I am a beginner...I can comfortably understand everything of aurdino...but it's not clear that can we make connections in every pin or only pin 7??

[@techathome]

You can connect to any digital pin

[@TechknowledgeHome]

You can use any digital pin as well as analog pins. Analog pins are more powerful pins than digital pins.

[@anematrix521]

im so happy i made my first led lit i only have 1 question when do i need resistors?

[@techathome]

Nice!! According to what I read, pin 13 has inbuilt resistor. If using any other pins, It's better to use a resistor always.

[@anematrix521]

@@techathome thank you so much

[@werideclub]

(very new to Arduino)Starting from my requirement I need to turn on a water motor(5v) for about 2 mins after every 12 hours, basically trying to automate water pump for home garden pots when I am travelling. I feel above code will perfectly work just I need to tweak delay time, is there anything else I should consider ? any other way to do it? also can I use Arduino Nano instead of UNO? or Uno is better?(as I said new to this)

[@werideclub]

BTW this doesn't work any more Product Links: Arduino Uno : amzn.to/3IGPadf

[@ItachiUchiha-qe5py]

Is there any specific side of jumper wire(positive or negative)?

[@techathome]

No

[@5084204]

/* A simple program to sequentially turn on and turn off 5 LEDs */ int LED1 = 13; int LED2 = 12; int LED3 = 11; int LED4 = 10; int LED5 = 9; void setup() { pinMode(LED1, OUTPUT); pinMode(LED2, OUTPUT); pinMode(LED3, OUTPUT); pinMode(LED4, OUTPUT); pinMode(LED5, OUTPUT); } void loop() { digitalWrite(LED1, HIGH); // turn on LED1 delay(200); // wait for 200ms digitalWrite(LED2, HIGH); // turn on LED2 delay(200); // wait for 200ms digitalWrite(LED3, HIGH); // turn on LED3 delay(200); // wait for 200ms digitalWrite(LED4, HIGH); // turn on LED4 delay(200); // wait for 200ms digitalWrite(LED5, HIGH); // turn on LED5 delay(200); // wait for 200ms digitalWrite(LED1, LOW); // turn off LED1 delay(300); // wait for 300ms digitalWrite(LED2, LOW); // turn off LED2 delay(300); // wait for 300ms digitalWrite(LED3, LOW); // turn off LED3 delay(300); // wait for 300ms digitalWrite(LED4, LOW); // turn off LED4 delay(300); // wait for 300ms digitalWrite(LED5, LOW); // turn off LED5 delay(300); // wait for 300ms and start again } // This code is just cleaner.

[@techathome]

👍

[@ajithkprabhakar1]

Hi, As a newcomer, your video is very useful to me and interesting. I would like to know how to set up 4 LED's

[@techathome]

Thank you Similarly declare leds to different digital pins Set the pinmode for all pins. Use digitalwrite for different pins seperately

[@srirammahapatra448]

​@@techathome tell the pin number 's which pins are to be use

[@techathome]

You can use any digital pins from 0 to 13

[@ankithshetty2104]

HI SIR I would like to ask can we use this as a indicator .

[@techathome]

Yes

[@tusharthakker7777]

Very nicely and clearly explained

[@techathome]

Thanks

[@Arun_1008]

Hello 😊, Please provide All Equipment link for buy it and also Code

[@techathome]

Everything is in description

[@dakshataramteke1838]

Which jumper wire is using male to male, male to female , female to female please tell me

[@techathome]

Male to male

[@shenoyhariprasad]

Hello Sir, could you please provide me with the purchasing link for Arduino Uno from Amazon that you used in the tutorial? The link mentioned in the tutorial description is not opening.

[@techathome]

Arduino Uno: amzn.to/40qhiti

[@NezukoKamado-ru2uc]

Tysm! this helped me a lot when I was required to do this project

[@techathome]

Welcome

[@adhritgupta707]

It is showing error that compilation errror expected '}' at the end of input

[@techathome]

I think something might have changed in the code. Can you download from link in description.

[@sumalatha24]

Sir I have installed arduino in Ubuntu 20.04 my port is like /dev/ttyS4 My output is showing like programmer is not responding. One more doubt as u said use digital pin for led connection if I connect 7 and running example blink program it's blinking. But when Iam using pin 4 led is not blinking

[@techathome]

Regarding 1st question, I have not used Ubuntu OS anytime, so no idea how it shows for Port. If you are connecting LED to different pin, you also have to edit the pin number in the code.

[@aryanraj-br5np]

Sir we know that an LED will fuse if we use 5v dc. Here in the code we are not setting up the voltage to 3.5v approx. which is normal voltage for led. So how the Arduino automatically giving correct voltage for led. Plz tell.

[@Slimey3DPrinting]

it will always gives 5v dc, so use a current limiting resistor

[@mukullanje5007]

Sir you said : longer leg= anode(+) and positive connected to digital pin and ;shorter leg = cathode (-) which is connected to ground but in this video you connected vice versa

[@techathome]

No, I have connected Longer one(+ve) to digital pin only, and shorter one to GND.

[@poojasureka1760]

Why have you connected led 1 to 7 can it be connected to any other number in the digital section

[@techathome]

Yes you can connect to any of the digital pins, But declare correctly in the code.

[@RAMKUMAR-eb1kq]

what is the wire name connected from aurdino to the system

[@techathome]

Usb A to B cable

[@govindkatyura7485]

What's the use of resistor? I don't know why and where to use them

[@techathome]

That is used as current limiting resistor Usually LED need very less current, if you don't use resistor, LED can burn after using for more time . But I have heard pin 13 has inbuilt resistor. U can use with LED, if you are connecting to any other pin except 13.

[@WebDepthMviewsyearsago]

#define LED 13 void setup() { pinMode(LED, OUTPUT); } void loop() { digitalWrite(LED, HIGH); delay(1000); digitalWrite (LED, LOW); delay (1000); }

[@ananyarajansvlogs9651]

not working , my port is not selecting

[@techathome]

Which type of Arduino are u using, Ch340 smd chip or the Dip IC one?

[@nileshnakade7470]

Sir, would you plz make video on lcd, ph and waterlevel sensor

[@techathome]

LCD part 1 : kzbin.info/www/bejne/nKqvYptsZ7Z7gNU LCD part 2 : kzbin.info/www/bejne/gqrYqpWZpLN4qdk Other sensor, will make soon

[@usmanbeacon1769]

How can i give input from pc to Arduino for led on or off by command line?? Or any other method??

[@techathome]

Refer this : kzbin.info/www/bejne/q4WbXnuGgrhkmbc Instead of bluetooth module , you can send value from serial monitor

[@techeducation1463]

how can we change duration of time ?

[@techathome]

Change the value inside delay function

[@durgasaiharshithalanki4111]

Nice explanation sir😊 awesome 👍

[@techathome]

Thank you ❤️

[@GoalLeeDesigns]

What is the name of that board and where can I get it

[@techathome]

Arduino Uno R3. You can buy online also: www.flyrobo.in/arduino-uno-r3-compatible-board-plus-cable-for-arduino-uno-1?tracking=EGXCW2oMhfyBcK6Sk1AJrTIztP2cZx0qc64QgrBQeDUPl0RUIBuMMhQFtnvTOaKj Max6675: www.flyrobo.in/max6675-module-with-k-type-thermocouple-sensor?tracking=EGXCW2oMhfyBcK6Sk1AJrTIztP2cZx0qc64QgrBQeDUPl0RUIBuMMhQFtnvTOaKj

[@DTalesJourney]

Sir mujhe har 30 seconds ke bad blinking led chahiye 5 seconds le liye... Plzzz help me with the code

[@Eyshcoffee]

Is it possible to make the LED stop blinking after blinking 10 times? And how?

[@techathome]

Refer this [I have used built in led- pin 13] int x=1; void setup() { pinMode(LED_BUILTIN, OUTPUT); } void loop() { if(x==1) { for(int i=0;i

[@srirammahapatra448]

Hy If i use pin no -6 or -5 that will be run ?

[@techathome]

Yes you can use, But declare the correct pin in the code as well

[@srirammahapatra448]

thanks you so much for your response @@techathome

[@BestmemoriesBesties]

Meeru output ni big letters rasaru kada enduku smalls enduku tesukovatledu Elaaa code Ki related videos Chestara plz its helpful to all why we write the code like this .

[@AnjumFAffu]

Hey..How to fix the error occured while uploading the sketch

[@techathome]

Check if the proper board is selected along with COM port in Tools

[@AliBaba-dc6zo]

can you make complete course on arduino coding and implementation

[@techathome]

I already have Arduino tutorials playlist : kzbin.info/aero/PL4B0LEKY-jrT_fjOGkX_NZ52ZHZf8s9S-

[@indianarduinoprojects8753]

My led on my arduino uno board is not blinking on pressing the reset button and code is not uploading to it can you please help me 🙏🙏

[@techathome]

Any error are you getting?? While uploading

[@indianarduinoprojects8753]

@@techathome yes it is showing that no arduino boards found

[@indianarduinoprojects8753]

@@techathome when I press the reset button the led is not blinking

[@indianarduinoprojects8753]

@@techathome from the same cable I connect another arduino that one is working fine

[@techathome]

May be issue with board??

[@gundewarsriguru4136]

can i kow the process to blink two LEDS with same code and connections

[@techathome]

Just connect one more LED to same digital pin

[@AboywithOCD]

If I pass in my exams because of this I will give you a chocolate

[@techathome]

Soon I will be receiving a chocolate then😶

[@AboywithOCD]

@@techathome Hopes for the best 😊

[@EdTechPraveen]

Bro my transmission light blinking automatically please help me

[@ahmedshaker7897]

if we removed arduino cable , will the led still blink ?

[@techathome]

No, You have to give supply using battery (round pin connector) Or usb(power bank)

[@ahmedshaker7897]

@@techathome ok thanks

[@sharmiladevi4727]

we need proper definition for setup void,digitalwrite,pinmode

[@techathome]

You can also get a detailed explanation on the Arduino official website.

[@Officialnoob_-999]

My led is not blinking 😢😢😢

[@techathome]

Check the connections.

[@Panchothefatcat]

How do you change the color?

[@techathome]

It is only blue colour led.

[@aasirawez3722]

If more LEDs are to be blinked then because I want to make a project which has maths shape like arrow, circle, triangle

[@pvasu8264]

Why You didn't used Resistor

[@techathome]

For less time it's still ok. But it is safer to use a resistor.

[@majaharali125]

Bro, mera blinking program nahi run ho rahahe, mujhe thora help chahiye....

[@techathome]

What is the error?

[@Arun_1008]

Can You provide me Report of this program...🙏

[@rajathkrishnarhathwar4334]

In tinkercad, ground pin wire is not there. What to do?

[@techathome]

Refer this : kzbin.info/www/bejne/mXPQip6XgN5jmtE

[@readytoboot]

Keep going. 💪🏻💪🏻💪🏻💪🏻

[@techathome]

Thank you

[@hansikawijerathne5507]

Thank you very much💗 this is very important👍

[@techathome]

Welcome

[@InformationEducation6]

Sir Arduino code kese banaya ka ak video banaya

[@techathome]

I didn't understand your doubt, Code is explained in the same video.

[@agfilmsmarketing]

I want to connect electromagnet, Turn ON and OFF Please guide me

[@techathome]

You have to use relay module. Refer this tutorial: kzbin.info/www/bejne/n6qWn4t8ncSSqMksi=7FvMi5UPKguK-8IV In this only changes are, 1. Instead of AC bulb, connect your electromagnet wires. 2. Instead of AC power supply, connect DC voltage required for your electromagnet.

[@agfilmsmarketing]

@@techathome thank you Another thing I want to connect 8 electromagnets Turn on NC on start turn off randomly Once all are turned off wait for RESET button And do the process again Please help

[@manpreetnooraulakh2846]

Can you share the code , the link that you given it is not opening

[@techathome]

Can u send request on mail, I will share the file.

[@prithvisatarkar4178]

Hello sir, I have facing problem while uploading the code, it shows byte error

[@nihalahmed4528]

Yes me also having that issue

[@techathome]

check the port once in tools

[@biopoweruk]

no resistor to protect the LED?

[@aatrox5559]

That is used as current limiting resistor Usually LED need very less current, if you don't use resistor, LED can burn after using for more time . But I have heard pin 13 has inbuilt resistor. U can use with LED, if you are connecting to any other pin except 13. here you go sir

[@techathome]

Yes , even i have come across the same on internet Pin13 has inbuilt resistor

[@bhubaneswarchandrasekharpu9349]

THANKS A LOT FOR UR NICE DESCRIBTION

[@techathome]

Welcome

[@Kasko-na-raja]

Can u send the video link for aurdiuno fading programme and inbuilt led programme ..?

[@techathome]

Fade : kzbin.info/www/bejne/jaepnoyvbJp9q5I

[@coolscholars4451]

can't set com-state for "\\.\COM24 ??

[@techathome]

Check com port in device manager and select the same in Arduino IDE

[@guliyevshahriyar]

Thank you for helping.

[@techathome]

Welcome

[@SathishYeripogu]

Fabulous explanation

[@techathome]

Thank you

[@knowledgeboard-fi2cs]

How i connect the Arduino to mobile

[@techathome]

There are few apps available on Play Store, Using that u can write code and upload from your phone using OTG cable.

[@khushisingh9603]

Hello sir and thank you

[@techathome]

Welcome

[@ashinthtnyt2179]

Similar to java ???

[@techathome]

It's C

[@charanjitnarang7292]

How many led can be connected

[@techathome]

There are 13 digital pins, you can use them

[@JoeEvansSound]

Hi mate. thank you for this video and your hard work, it is a very good video adding extra information for us. thank you very much. :¬)

[@techathome]

Welcome

[@Dishank25S]

Great video 🔥

[@techathome]

Thank you

[@zakawaka3752]

And how to make it for slowly turning on and off

[@techathome]

Increase the delay

[@zakawaka3752]

@@techathome thanks for replying

[@yasithlalanjana1125]

//KZbin|Tech at Home int led1=7; void setup() { //pinMode(pin,mode); pinMode(7,OUTPUT); } void loop() { digitalWrite(led1,HIGH); delay(200); digitalWrite(led1,LOW); delay(200); }

[@shivrajpatil7759]

It is showing error

[@techathome]

Did you select the port

[@jeetpandya4760]

How to blink blue led 5 times and stop it then blink red led 5 times

[@techathome]

Use For loop with count 5. Add blink logic inside for loop. Repeat same for next LED.

[@jayshhirekar159]

How can I stop blinking of LED

[@techathome]

You can keep the blink logic inside a for loop . for(int i=0; i

[@gayathrinaidumiriyala7262]

same way done.but led not blinking ,may i know the reason

[@techathome]

Reverse the terminal of LED and check once. Even then if it is not working, connect to any other digital pin.

[@gayathrinaidumiriyala7262]

@@techathome all changes made but no result

[@techathome]

@@gayathrinaidumiriyala7262 can you please send me the code. Mail here : [e-mail]

[@gayathrinaidumiriyala7262]

@@techathome done

[@techathome]

@@gayathrinaidumiriyala7262 in the digitalwrite () , instead of led change it to 7 in both lines.

[@annuchaudhary164]

thank you

[@techathome]

Welcome

[@souravl6882]

Nice one deepak

[@techathome]

Thanks

[@vijayakumari-kc8mj]

I want Circuit diagram on led blink

[@techathome]

It's given in description.

[@lukasnevidzan5523]

LED hat not resistor ????

[@techathome]

Arduino pin 13 already has register inside

[@vsbrosis957]

very informative

[@Arun_1008]

Please provide Code (Description Coding Link is not going to open) and equipment material link

[@techathome]

Code is working, pls click on ok, when it asks for folder while trying to open

[@Arun_1008]

@@techathome this file format is not supported

[@techathome]

Have you installed Arduino IDE in your computer?

[@Arun_1008]

@@techathome No

[@techathome]

Download and install this: downloads.arduino.cc/arduino-1.6.7-windows.exe Then Open the file using this

[@syedsharukh8265]

Was the language c++

[@techathome]

Basics of C with some Arduino specific functions

[@nahomhabtamu870]

no it is working first not on 7 on 13

[@techathome]

It will work on all digital pins, have you configured correctly in code?

[@MuhandisTv]

Good job 👍👏👌👌

[@kangajankuganathan7457]

Thank you :-)

[@NehaKumari-cs5qe]

My led is not blinking I also do same but it's not blinking

[@techathome]

Can u verify the connections, Anode and cathode

[@nimeshkumavat4784]

Where is part 1 ?

[@techathome]

Complete playlist: kzbin.info/aero/PL4B0LEKY-jrT_fjOGkX_NZ52ZHZf8s9S-&si=nfOqvqjlkUnmWSpW

[@muniranorqoziyeva1301]

😊soo cool 🎉

[@techathome]

Thank you

[@rohanshiragaonkar917]

Thank u sir

[@mileshk2293]

Nice helpful

[@amit.s.4432]

How to open the rar files in mobile

[@techathome]

Try to find zip file reader on Play Store.

[@amit.s.4432]

@@techathome Sir, I tried to open the file by downloading the Zip file from the Play Store but it's not opening the file, please send me the name of the Zip file reader that I have to download from the Play Store, thanks

[@techathome]

Try this: play.google.com/store/apps/details?id=com.rarlab.rar

[@sagar_jadhav77]

Kuch galat hou sir dhyan se dheko

[@techathome]

?

[@deekshaprajapati8892]

Yes my led also blinking❤

[@AbhishekAbhishekp.s]

Its working wow

[@techathome]

🙂

[@danmax3418]

bro why it deoesn t blink, should i press a button or smthin?💀💀💀

[@danmax3418]

Nvm it worked, i just the led in the wrong way, sry

[@techathome]

👍

[@kripathankachan1782]

Very useful ☺️👍

[@techathome]

Thanks

[@ruhulwara]

Thank you dada

[@techathome]

Your welcome 🙂

[@technodarsh5721]

Can I call you? I need help!

[@technodarsh5721]

It says serial port not selected

[@technodarsh5721]

It says serial port not selected

[@techathome]

Have you selected com Port in tools?

[@Saizzzo]

Prepare diwali light with Arduino

[@techathome]

kzbin.info/www/bejne/fnS0iIOjiKmkmdEsi=GC-dnIPxvUbPzzbG

[@MrExcel1986]

my my led is not blinking

[@techathome]

What is the error?