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Arduino Interrupt: Basic Tutorial! (External Interrupt)

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Опубликовано:

28 авг 2024

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Комментарии : 6

@luizmelk3114 7 месяцев назад

Thanks for the video! I finally understood why we have different interruption modes and how they work.

@arduinoexpert3416 7 месяцев назад

Thank you! I am glad you liked it!

@renjithvs6272 4 месяца назад

Excellent information. I'm working on a project that needs a suggestion. Made a simple RFID reader with RC22 and Arduino UNO with LCD. Once RFID is scanned, it holds it for 3 seconds and ready to scan the next. There is an external 12v dc supply to trigger the interrupt (instead of switch) and I need to keep the scanner busy until I remove the 12v. Also, LCD should display "Busy" until the 12V is removed. Can u pls advice

@lastchance045 6 месяцев назад

Here is the code I copied from your video Thanks #include #include const int button_pin = 2; int number = 0; LiquidCrystal_I2C lcd(0x27, 16, 2) ; void setup() { lcd.init(); lcd.backlight(); lcd.print ("NUMBER:"); pinMode (button_pin, INPUT); attachInterrupt (digitalPinToInterrupt(button_pin), incrementNumber, RISING); } void loop () { lcd.setCursor (8,0); lcd.print (number); } void incrementNumber () { number ++ ; }

@arduinoexpert3416 6 месяцев назад

Hello my friend! Sorry for the late reply. So, the problem with your code is that TinkerCad uses a different address for the LCD display. Try to change the command in your code from: LiquidCrystal_I2C lcd(0x27, 16, 2) ; to LiquidCrystal_I2C lcd(32, 16, 2); Note that in the video I'm using the number 32 as address. Also, have a look at the address your display is using by clicking on it, to see if they match. Let me know if it worked. Take care!