The Watchdog Timer on Arduino 

Firstly thank you for this informative video. It really shows all the different settings of a watchdog timer. For me the "Interrupt" only configuration of the WDT worked fine, but the other two didn't work properly. In both cases "Reset" and "Interrupt+Reset" configurations the reset happened instantly, as if the configured time interval for the WDT was not taken into account. I spent some time in trying to solve this out and found a solution, which is to disable all interrupts with "cli()" before setting the WDT in the "setWDT()" function and ultimately activate all interrupts again with "sei()". Now everything works as intended and hopefully this solution helps others as well.

Your videos are really good. Probably the best i've ever had the privilege to come across. thank you for your time and effort.

Great explanation, thanks!

nice and clear exposition, thanks

Kudos, very informative!

Great work. Thanks.

Thank you, i am learning this item and getting al the peaces to getter. :)

the #include too eyser

cool

ty!

This is interesting. Is the watchdog reset similar to pressing the reset button manually?

Did anyone of you tried this example in TinkerCAD? For me it didn't work and I was thinking maybe to try it in another simulation software like Fritzing. Any feedback is much appreciated. Thanks.

on Atmega8A I compile and showing error --'WDTCSR' was not declared in this scope-- in atmega328 no problem

you did that graphic?

Good day. Nice video! I have a question on whether it is possible to do a watchdog timer reset every 30 minutes? If yes, how do I go about changing your code?

Hello Sir, I need your help. I want to set watchdog timer for my arduino program. My condition is if digital read pin 5 goes low for max. 8 second then arduino should reset. Please guide me.

nice doggo:))

How would I use the watchdog timer with a switch case statement if there are different variable times for the "sleep" period? Would I have to write the code for each case statement for the time? Any help would be greatly appreciated. I'm also using the ATtiny85, so there is some different variations in the libraries. Thanks!

If i understand, the watchdog timer prevents your program of freezing ? Thanks! Marc.

nice and informative video... can a watchdog timer be designed on eagle or kicad software using this arduino code ? Thank you

se podría utilizar el Watchdog cuando detecte que se fue el internet y toca apagar y prender el moden de la fibra, para que vuelva el internet, yo escuchado con el ping Watchdog pero no se como aplicarlo, tengo el arduino uno, un modulo ethernet y un rele los cuales accedo manual mente y mediante el programa lo apago y prendo lo que busco es hacer automático, en el caso de ayudarme yo le pago

i want to add delay of 10 seconds to my action whenever my sensor triggers can i use these for the same purpose ? if yes how please give me hint i m desperately waiting for it.

WatchDog reminds me of Spike Dog from TOm and Jerry

hi, i am working on a project i wanted to know that i want my sensor system to work only 2-3 hours in a day. and the other time i want it off. could you advise me what to do?

Can you help me? I just want to reset my Attiny85 every 5 sek. How can I do this?

:( it does not work for me. I do a wdt_disable(); at start of the setup then I check the MCUSR & WDRF and reset it, (if it was true I do not play the startup tune) at the end of setup I do wdt_enable(WDTO_4S); but if interupt occours, all that happens is that the LED flickers wildly

Interesting video. Can you share your code. Thanks

I liked the dog in the beginning who is angrily watching for the interrupt to come out !!!! But the video does not really explain the issue from the dog. It just uses a library cheat !

to close to your mic man a little more distance

Sorry, never learned english....