clock

Beware! This might be extremely imprecise if you have low end device! I compared it to real chronometer and it had about 5-15 second delay in a single min so do a little math magic to figure out how imprecise this is. And you can't really do anything about except getting a better device. At the start I taught that there might be a bug in pre-made timer, and made one out of LUA, but I had the same results. And now I'm using jumpers just because I didn't like how they were just snapping.
BTW: I didn't put that much effort into spacing out those numbers so... Yeah.