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Hey! I know I said I was not going to give you code I didn't test myself but that could take a while so here it is the draft: https://github.com/benjatraverso/Tiny13Watchdog.gi...I left as much comments as I could, please let me know if you have any doubt!
I wouldn't send you code i didn't test myself so let me work on it a little.Actually i think i would try this proyect myself with that little change in the code :DThanks!
I think this is an excellent proyect to use the attiny13 watchdog timer to save power consumntion! And that would also give it a great excuse to pick the MCU from a 555 as you comment!The datasheet is really easy to follow to get this done and you can make the intervar from 16ms to 8sec variable by just adjusting the watchdog configuration.I don't have a repo with something like that right now but i could work it out and send you the code if you like!As you don't need the ADC either you could decrease power consumtion even more and get the bottom battery to last ages!Great proyect i love it!
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