I think i have a 10nF cap right at the side of the chip. Its as close as i can get it. There is also a 100uF cap right after the regulator. Theres also an audio circuit that connects to it which has a pair of 1000uF caps on i think (they are at least 100uF). It doesnt make any difference wether or not that circuit is attached.

I didnt use a CMOS 555 because i read somewhere that they wouldnt be suitable for this circuit.