Arduino Workshop - Chapter 5 - Interrupts

The full tutorial for this video (with images and step-by-step tips) core-electroni...
In this section, we'll look at how to use interrupts. You may have heard of them before, and they're a great way to increase your program's efficiency when dealing with hardware inputs.
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[@bacalijoe]

(1) Excellent video (2) All information relevant to the subject was covered (3) An example code was provided.

[@DevineIshaq107]

1. Thanks for NOT adding loud music instead Soft && short . The instructions are very good. thanks

[@Mokkonokko]

You are by far my favorite IT nerd

[@mojoxide]

Instant sub - great teacher, please don’t change a thing.

[@nmjerry]

So an interrupt vector is the address of the machine code to run when an interrupt is detected or called. It is not the same as an Interrupt Service Routine, which is the code to be run on the interrupt, but is an address to an Interrupt Service Routine, operating system code running on metal. The interrupt vectors can be put in a table that allows for the updating of the interrupt routine without changing the calling routines code.

[@jcjensenllc]

Well done. Clear and comprehensive.

[@vladimir5935]

2 things: 1) if you write async code and/or use state machines you don't need to use interrupts 2) on x86-64 you can easily corrupt your own data if you use linux signals which are similar to interrupts, because reads/writes are not atomic and you can get an interrupt in the middle of a variable assignment. not sure if it's the same on arduino

[@notarobot22]

Game changer! Well explained. Thank you

[@JimmyDeLock]

Thanks for the video, it was really useful!

[@MightyTechGuy]

Great video.. best on using interrupts

[@9brian99]

Yes I likes it too. Must be the fourth tut I’ve watched and I reckon this was about the clearest. Better go and do some coding. Thanks

[@rajibhaxan]

thanks for your quality video. keep up the work

[@kris36900]

Respect for your quality work. Great videos. Thank you!

[@CandyLemon36]

The wisdom within this content is remarkable. A book with akin insights influenced my personal evolution significantly. "A Life Unplugged: Reclaiming Reality in a Digital Age" by Theodore Blaze

[@hubercats]

Very helpful video. Thanks for sharing.

[@craigmunday3707]

Really nice explanation of interrupts

[@hubercats]

Very helpful video. Thank you!

[@vangeziyorum9725]

I made an ultrasonic height and weight measuring device. I wrote the codes with Arduino and arduino UNO. Normally everything works fine. But sometimes after waiting for an hour or two, I take a measurement, the device is measuring, it shows the numbers on the screen, but it does not print the result to the thermal printer. The numbers stay on the screen, then the device is reset with whatchdog. This is starting to get annoying. can you help me with this

[@rikvdmark]

Sweet, thanks! Exactly what I need for a project I'm working on :) Finally understand what I need to do ^^

[@waseemsoft]

How to concatenate two Integer values into one? Given two integers n1 and n2, the task is to concatenate these two integers into one integer. Example: Input: n1 = 12, n2 = 34 Output: 1234 Input: n1 = 1, n2 = 93 Output: 193

[@SMShannon55]

Output = n1*100 + n2;

[@chuckthebull]

What seems goofy to me is the loop is going to run all that code for the setup of that interrupt each time around when I could reduce all that with a two line of code button branch loop.. 🤔 ,,but then again in a heavy complex code it might be beneficial as you stated.

[@rajusoni6540]

Thanks for useful information

[@ivandjones]

Thanks!

[@Core-Electronics]

No problem!

[@matjazpetek2511]

Great teacher you are :) insta sub, thank you

[@BFC24]

How I do interrupt when signal low and interrupt break when signal is come to high

[@rccanuck4473]

Would an interrupt be the best method to have an output to energize a relay every hour.?

[@cosimoferreri4404]

Hi i built my own flux capacitor from back to the future, with my friends help. We have written a large sketch with 9 sequences. we have the y centre leds (3 strips of 10) and door leds (4 x3) working simutaneously. we are using arduino mega. everything works fine but we are having the problem of the IR remote changing the sequences. i tried incorporating your code, it uploaded fine but didnt make a real difference. happy to show you the code if you could help. thanks

[@raymi9612]

If I try to use ISR method for measuring the rotation speed of a DC motor with Hall sensor, I can't use PWM control (it's a rotation speed control system). Somehow the PWM signal wich I try to send to the PWM to DC converter is not constant and stops every time I calculate the speed. The interrupt method should be the most precise in measuring rotation speed. Any idea what is the problem?

[@yashaswikulshreshtha1588]

I am not sure but I think the problem is you're trying to use a converter which I think is not suitable, instead to run motors you can use motor driver, those are like little chips with circuits and all required functionality, I think probably the way they work is by using PWM signal as a control which controls another voltage coming from another source, if you directly convert the signal and if the converter works then it will be fine use it, however there could be another possibility you're using a digital signal which is digitalWrite(x, HIGH); you can use analog signal which uses the function analogWrite(x, HIGH); that way you can control

[@sennabullet]

Oh man...a big huge 'Thanks' (and a sub!) for this incredibly informative and well presented Vid. You have been a great help to this Arduino noob!

[@ramiabdelmajid9990]

Thanks again bro. In the workshop page there is a chapter 6 which talk about IOT. But the videos are not related. I wish if u can add the videos. 👍

[@oatz1878]

Nice explanation. I’m using a Nano that limits me to pins 2 & 3, as you said, but I’ve heard about PCINT that allows you to assign a software interrupt to other sets of pins. This true?

[@robertofkennedy]

Can the ISR run a function to exit out the loop that was running before the interrupt?

[@jrstf]

I would hope nobody would tamper with the stacked PC to force such an exit.

[@Ishanchawla61]

I want to read 8 rotary encoders simultaneously. Each encoder is a quadrature encoder with 2400 counts per revolution. Two interrupt pins are required to read the direction and position of each encoder. In total, I require 16 interrupt pins. But Arduino mega has only 6 interrupt pins. Should I use 2 Arduino mega as a slave and 1 Arduino as Master in I2C communication? Will this alternative work? Is there any easy alternative to this problem

[@ax13h]

The ATmega2560 has only 8 'external interrupts' but has an additional 24 more general 'pin change interrupts' which has a single ISR per port (8 pins). Perhaps you can make these work.

[@MrThePaprika]

great Video thanks

[@Malim295]

Please, if possible, I would like to run several LEDs using a number of swings in the Arduino program

[@yamenhazimi2947]

im woking on a project which i use a couple of sensors. i have a problem which i use 2 encoders to messure rotation speed (using interrupts); and i have another IMU sensors (for messuring acceleration). how can i read all the data from all those sensors?? i have a problems which im using interrupts for encoders and by that i cant read the IMU sensor thanks

[@akshaysai1109]

I am not an expert, but how about reading the value of a sensor when you require the value? For example, if you want to print the data from each sensor to the serial monitor, you can type Serial.print(analogRead(encoder));

[@il400]

what kind of encoder were you using?

[@robert__]

Thanks a million!!!

[@armintabakovic9961]

Thanks

[@vijayandalam1139]

Is it ok to use more than three interrupt digital pins?

[@1-2-3-4-5]

It depends on the board you use.

[@taranagnew436]

do I change the pin (2) to buttonpin if I want to press the select button to roll the dice, heres the code include LiquidCrystal lcd(8, 9, 4, 5, 6, 7); void setup() { lcd.begin(16, 2); lcd.setCursor (5, 0); lcd.println ("catan" ); attachInterrupt(digitalPinToInterrupt(2), btnselect_button, CHANGE); } void loop() { randNumber = random(1, 7); Serial.println(randNumber); randNumber = random(1, 7); Serial.println(randNumber); if(digitalRead(buttonPin) == 0 && lastButtonState == 1) //if button is pressed and was released last change else if(digitalRead(buttonPin) == 1 && lastButtonState == 0) //if button is not pressed, and was pressed last change { lastButtonState = 1; //record the lastButtonState } }

[@charme2377]

thank you for the video great...if i want to creat a sketch that do something but if the is no changes for 2 sec donc do this sketch do you have an exemple please any one help thanks guys

[@se4350]

Good content, thanks your tutorial

Hi, I want data from the sensor once. But since the arduino is constantly powered and therefore operates, data is constantly coming from the sensor. How can I do this with an interrupt or anything? Thank you

[@Sleeperknot]

10 minutes well spent understanding interrupts than reading all the crappy documentation which doesn't give a clear picture.

[@michaels8297]

So lets say I have arduino and whenever I write a 1 to it it sends me data over serial. If I now add an interrupt for a separate sensor(say a flow meter)...will this effect my attempts to get data from arduino when I write to it to get data?

[@shahidqureshi8598]

I am working on a FASTLED project in which i so many modes. I am controlling the modes of the leds with IR Remote. My problem is when the arduino executing a function is doesn't receive the value from my remote. So can i use Ir remote and receiver led as intrrupt. So that when i pressed a button from my remote the arduino receive the value and after executing the funtion the mode will change. If it is possible then tell me how can i do this. I tried so many programs and i searched it on google too, but i didn't find it anywhere. Thanks in advance.

[@indikasujeewa9124]

I can not understand

[@repaircityhub737]

why audio is to far?

[@amritkumarsharma1301]

how to provide priority to the interrupt

[@aligasco7206]

reference height arduino I want to know my room floor level how much height from other room in which video solution

[@OMEGa3FattyAcid100]

Did he say chicken or check in?

[@ilgazk.9057]

are we in tekken 3

[@RogerJonker]

great...Thanks for charing...subt

[@zsigmondforianszabo4698]

integers as booleans *hurt*

[@soheel2009ify]

Your example is not clear

[@VIPPersonTM]

I am still a noob but subscribed anyway :))

[@jacebryant2453]

It says ISR_button not declared. I dont think you know what youre doing

[@jestersi]

O.o