MK111 INTERVAL TIMER Mod

Hello,

Is there any way to get the pause time adjustable out to 5 minutes?

I was told the formula would be something like this;

TIME (seconds)=1.1 x R2 x C3

1.1 x (R2) 1000 ohm x 0.0001 uf = .11

Is this 11 seconds? That sounds about right because we are not calculating for RV1, (1 M) trimmer.

So my question is… what values would get me in the ball park of around 5 minutes?

I understand that it would not be adjustable from 2 seconds to 5 minutes but a fixed time of 5 minutes, (or close to it), will work just fine…

Thanks :smiley:

increasing C3 to 470µF or more will increase the pause.