[3dude_2231]

thank you guys for replying,

for you curious guys, we lost one of our sensors at the regional
(a magnetic sensor, giving us logic '1' whenever 2 magnetic plates are near).
(un)fortunately, autonomous didn't work right anyway, so it wasn't a problem =/
I was thinking, .....if we had to make a quick solution...............

now, I'm thinking more of using an unused TIMER (3 I think is unused by us)
with a prescaler, and multiply that period,
so nothing goes wrong.

we might just as well prepare extra sensors, but it could take some time to fit them.